❓ This WA parliamentary question addresses the environmental threat posed by *Tamarix parviflora* and *Tamarix aphylla* in Western Australia, particularly concerning their invasive potential and current weed management strategies. The response indicates a moderate environmental threat and ongoing review of declared plant policy.
AnsweredQoN 984Legislative Council
QuestionView source ↗
With regard to Tamerix parviflora in Avon River and Tamarix aphylla in the lower Gascoyne River -
(1) Does the Department of Agriculture consider that either poses an environmental threat to Western Australia?
(2) Does the Federal Government consider that either poses an environmental threat to Western Australia or to Australia as a whole?
(3) If so, what are those threats for each species of plant?
(4) If yes to (1), is either a declared weed in Western Australia, or in other Australian States or Territories?
(5) If yes to (4), in some States these plants are declared but not in Western Australia why?
(6) If no to (1), why not?
(7) If yes to (4), what does the Department intend to do to stop the spread of these plants?
(1) Does the Department of Agriculture consider that either poses an environmental threat to Western Australia?
(2) Does the Federal Government consider that either poses an environmental threat to Western Australia or to Australia as a whole?
(3) If so, what are those threats for each species of plant?
(4) If yes to (1), is either a declared weed in Western Australia, or in other Australian States or Territories?
(5) If yes to (4), in some States these plants are declared but not in Western Australia why?
(6) If no to (1), why not?
(7) If yes to (4), what does the Department intend to do to stop the spread of these plants?
AnswerView source ↗
Answered
4 September 2003
Responded by
Minister for Agriculture, Forestry and Fisheries
Response time
23 days
T. aphylla is one of the twenty Weeds of National Significance. As such a National Strategy has been developed to help manage the threat. T parviflora is a similar tree but is not a Weed of National Significance. This tree has also shown a tendency to weediness under favourable conditions, but only in isolated instances. The Department of Agriculture considers the trees to represent a moderate environmental threat in WA. The trees have been planted throughout most parts of the wheatbelt and the rangelands. (2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
T parviflora is a similar tree but is not a Weed of National Significance. This tree has also shown a tendency to weediness under favourable conditions, but only in isolated instances. The Department of Agriculture considers the trees to represent a moderate environmental threat in WA. The trees have been planted throughout most parts of the wheatbelt and the rangelands. (2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
The Department of Agriculture considers the trees to represent a moderate environmental threat in WA. The trees have been planted throughout most parts of the wheatbelt and the rangelands. (2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
T parviflora is a similar tree but is not a Weed of National Significance. This tree has also shown a tendency to weediness under favourable conditions, but only in isolated instances. The Department of Agriculture considers the trees to represent a moderate environmental threat in WA. The trees have been planted throughout most parts of the wheatbelt and the rangelands. (2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
The Department of Agriculture considers the trees to represent a moderate environmental threat in WA. The trees have been planted throughout most parts of the wheatbelt and the rangelands. (2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(2) T aphylla is recognised as a Weed of National Significance by the Commonwealth. (3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(3) Both plants have exhibited invasive tendencies under some conditions. T. aphylla is an invasive tree capable of both seed and vegetative reproduction while surviving in very harsh environmental conditions. It can alter ecosystems. (4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(4) Neither plant is a Declared Plant in Western Australia. T. aphylla is a declared noxious weed in parts of South Australia and the Northern Territory. It is prohibited from entry into Western Australia and Tasmania. (5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(5) T. aphylla is assessed as a far bigger risk in those states where it is declared as a noxious weed. Having a weed declared does not improve the management of the weed unless the landholders who have infestations of the weed are engaged in the total strategy to control the weed. Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
Consideration is being given to regulating the sale of T. aphylla in Western Australia. (6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(6) Not applicable. (7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
(7) A comprehensive review of declared plant policy is being carried out by the Department of Agriculture and the Agriculture Protection Board. Part of the purpose of this review is to assess the best way of managing environmental weeds of the nature of T. aphylla , which have been a part of the Western Australian landscape for over 100 years but have only recently demonstrated weediness. The review will also examine what is the appropriate treatment of environmental weeds under the Agriculture and Related Resource Protection Act 1976 which is aimed mainly at the regulation of agricultural weeds rather than environmental weeds. The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
The Department is currently developing a publicity campaign targeted in the rangelands to raise awareness of potentially weedy species that were at one stage introduced as garden plants and shade trees into remote areas. Those plants that present an environmental threat include tamarix species, some cactus species, mesquite, mimosa, parkinsonia and prickly acacia.
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