FIELD BINDWEED BABY'S BREATH HOARY ALYSSUM LEAFY SPURGE Montana Priority 28 Flathead County Priority 2A Montana Priority 28 Montana Priority 2A K George Beck and lames Sebastian, Colerado SeateUniversty. Herms, The OStabe Uiversity, Bugwood ong Gencrally associated with floral bouquets, this Hoary Ayssum is a 7-30 inch tall erect plant Leafy spurge is an extremely aggressive, long- Blossoms are fused five-petal, trumpet-shaped perennial noxious weed is a native of Eurasia with small white/gray flowers that develop into lived perennial. It has recognizable yellowish flowers that are seen in white, pink or white- Baby's breath is approximately 3 feet tall round seed pods that remain attached to the stem green leafy flowers cupped by rounded clover and-pink variations. Flowers open in the multi-branching and is spherical in shape. The until the end of the growing season. Although a ike bracts. The leaves are slender and smooth moning and last one day, closing at night and leaves and stem are smooth, with purple fairly simple-looking flower is easily as are the stems, and the entire plant contains under overcast skies. Leaves are recognizably accents appearing along the stem where leaves recognizable by its deeply notched petals. This milky white latex that is TOXIC to both humans arrow-shaped and the vine is a low creeping attach. The small white flowers have 5 petals weed decreases forage value in pastures and hay and many animals. Growing between 2-4 feet tendril that likes to climb objects, creating a and the plant has a thick taproot. Each plant fields, and if 30% or more of forage is tall, it can be found in rangeland, pastures, dense tangled mat that can reach up to 9 feet can produce as many as 14,000 seeds, and the contaminated with hoary alyssum is can cause a roadsides, and ditches and can thrive in a variety long. Roots can reach as far as 20 fcet in width plants themselves are capable of breaking off variety of ailments in horses. Numerous horse of soil types. One large plant can produce and 30 feet in depth. This plant is every famers and rolling away, leaving a trail of seeds. This deaths have been reported across the Midwest 130,000+ seeds that can remain viable for up to nightmare as the seeds can remain viable for weed can form dense stands that displace and Northwest in the past several years. 7 years. When the seods rcach maturity they are 20+ years and once established, can greatly native grasses and other desirable forbs. Although it is not as common in Flathead County launched from the plant explosively, allowing lower crop and forage yields as well as host a Fortunately, it can be grazed by many animals as other noxious weeds it is well worth your time for the seeds to travel up to 15 feet away from multitude of plant viruses that affect a variety when it is young and tender. It is generally to prevent new infestations and control the mother plant found in pastures and hayfields, roadsides, established ones. along fence lines and other disturbed habitats. How to Treat Pre-Bloom Herbicide (use multiple methods) How to Treat 9 Integrated Methods (MUST) Grazing (withshep/goats and combined with Pre-Bloom/Regrowth Herbicide How to Treat How to Treat Pre-Bloom Herbicide Tilling (only in cropland) Pre-Bloom Herbicide (repeat applications) other methods) Improve Conditions for Competitive Forbs Mowing (can redice seed procdection /must Mulching &Garden Fabric (3-5 yrs) e Hand-pulling (only small areas, when wet) be hogged / must be combined with other Hand-pulling Plowing/Hoeing (repeat every 2-3 weeks) Grazing (early season) 8 Hand-pulling Hand-pulling Tilling (macceptable) WEED NEWS & INFORMATION BULLETIN #2 FLATHEAD COUNTY WEED DEPARTMENT WWW.FLATHEAD.MT.GOVIWEEDS WEEDSCOMPLIANCE@FLATHEAD.MT.GOV 406.758.5798 REMEMBER: If using herbicide, read the label. THE LABEL IS THE LAW FIELD BINDWEED BABY'S BREATH HOARY ALYSSUM LEAFY SPURGE Montana Priority 28 Flathead County Priority 2A Montana Priority 28 Montana Priority 2A K George Beck and lames Sebastian, Colerado SeateUniversty. Herms, The OStabe Uiversity, Bugwood ong Gencrally associated with floral bouquets, this Hoary Ayssum is a 7-30 inch tall erect plant Leafy spurge is an extremely aggressive, long- Blossoms are fused five-petal, trumpet-shaped perennial noxious weed is a native of Eurasia with small white/gray flowers that develop into lived perennial. It has recognizable yellowish flowers that are seen in white, pink or white- Baby's breath is approximately 3 feet tall round seed pods that remain attached to the stem green leafy flowers cupped by rounded clover and-pink variations. Flowers open in the multi-branching and is spherical in shape. The until the end of the growing season. Although a ike bracts. The leaves are slender and smooth moning and last one day, closing at night and leaves and stem are smooth, with purple fairly simple-looking flower is easily as are the stems, and the entire plant contains under overcast skies. Leaves are recognizably accents appearing along the stem where leaves recognizable by its deeply notched petals. This milky white latex that is TOXIC to both humans arrow-shaped and the vine is a low creeping attach. The small white flowers have 5 petals weed decreases forage value in pastures and hay and many animals. Growing between 2-4 feet tendril that likes to climb objects, creating a and the plant has a thick taproot . Each plant fields , and if 30 % or more of forage is tall , it can be found in rangeland , pastures , dense tangled mat that can reach up to 9 feet can produce as many as 14,000 seeds, and the contaminated with hoary alyssum is can cause a roadsides, and ditches and can thrive in a variety long. Roots can reach as far as 20 fcet in width plants themselves are capable of breaking off variety of ailments in horses. Numerous horse of soil types. One large plant can produce and 30 feet in depth. This plant is every famers and rolling away, leaving a trail of seeds. This deaths have been reported across the Midwest 130,000+ seeds that can remain viable for up to nightmare as the seeds can remain viable for weed can form dense stands that displace and Northwest in the past several years. 7 years. When the seods rcach maturity they are 20+ years and once established, can greatly native grasses and other desirable forbs. Although it is not as common in Flathead County launched from the plant explosively, allowing lower crop and forage yields as well as host a Fortunately, it can be grazed by many animals as other noxious weeds it is well worth your time for the seeds to travel up to 15 feet away from multitude of plant viruses that affect a variety when it is young and tender. It is generally to prevent new infestations and control the mother plant found in pastures and hayfields, roadsides, established ones. along fence lines and other disturbed habitats. How to Treat Pre-Bloom Herbicide (use multiple methods) How to Treat 9 Integrated Methods ( MUST ) Grazing (withshep/goats and combined with Pre-Bloom/Regrowth Herbicide How to Treat How to Treat Pre-Bloom Herbicide Tilling (only in cropland) Pre-Bloom Herbicide (repeat applications) other methods) Improve Conditions for Competitive Forbs Mowing (can redice seed procdection /must Mulching &Garden Fabric (3-5 yrs) e Hand-pulling (only small areas, when wet) be hogged / must be combined with other Hand-pulling Plowing/Hoeing (repeat every 2-3 weeks) Grazing (early season) 8 Hand-pulling Hand-pulling Tilling (macceptable) WEED NEWS & INFORMATION BULLETIN # 2 FLATHEAD COUNTY WEED DEPARTMENT WWW.FLATHEAD.MT.GOVIWEEDS WEEDSCOMPLIANCE@FLATHEAD.MT.GOV 406.758.5798 REMEMBER: If using herbicide, read the label. THE LABEL IS THE LAW