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Fall Weed Control Tips
LCNWC article for the Fall 2022 issue of WA's Forest Stewardship Notes Newsletter Autumn is a great time to control many biennial and perennial noxious weeds! The autumn weed control window opens when the fall rains begin and it closes just before the first hard frost of winter. Many plant species utilize this time frame to translocate carbohydrates down into their root systems, in preparation for winter dormancy, which means that they are particularly vulnerable to damage and treatment efforts this time of year.Manual control, like pulling or digging, requires less effort when done early in the rainy season. Roots …
Weed Control - Sept. 23, 2022, 8:44 a.m.
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Policeman's Helmet
Impatiens glandulifera Policeman's Helmet - An herbaceous annual that is smooth and hairless. It can range from 3 - 10 feet tall.Leaves: Usually 3 leaves per node and are usually alternate, opposite, or whorled. Leaf shape is oblong to ovate to elliptic. About 6 inches long and sharply toothed margins.Flowers: Flowers bloom from July to September. Irregular flowers that are shaped similar to a British policeman's helmet. Color ranges from white to many shades of pink. Flowers have 5 petals (2 fused), 3 sepals (2 fused), and 5 stamens.Habitat: Partially shade tolerant. Found in lowland, riparian habitats such as moist …
Weed Control - Sept. 29, 2022, 9:48 a.m.
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Excellent Reminder!
Much thanks to The Farm Store for reminding us all that fall is an excellent time to resume our efforts in weed control.And they definitely aren't lying! As moisture increases and temperatures remain moderate, all those weeds are getting ready for fall by moving nutrients into their root systems, making it a prime time to apply herbicidal treatments for a big impact!If you have any questions related to specific noxious weeds or herbicides, reach out to us and we'd be happy to fill you in on all you need to know.Also, if you have some problematic noxious weeds on your …
Weed Control - Sept. 26, 2019, 9:11 a.m.
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Flowering Rush
Butomus umbellatus Flowering Rush - An emergent invasive with a very limited distribution in Washington state that can sometimes stay submerged. Can grow up to 5 feet tall.Leaves: - Thin upward growing leaves that often twist when above the surface of the water and reach 3+ feet in length (when plant is emerged and much longer when it is submerged). Leaves have a triangular cross section.Flowers: - Blooms June - September with umbrella shaped clusters of 20-50 flowers that have 3 sepals and three white to deep purple petals.Habitat: - Can appear in a variety of habitats and is often …
Weed Control - Sept. 12, 2022, 1:31 p.m.
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Buffalobur
Solanum rostratum Buffalobur - An annual plant growing around 1.5-3 feet tall, covered in spines and hairs.Leaves: Alternate leaves 2-6 inches long. Leaves are irregularly cut into 5-7 lobes and are very prickly.Flowers: Flowers bloom from June-September. 3-15 flowers per flower cluster. Flowers are bright yellow, 5 lobed, flat, and circular shaped about an inch across.Habitat: Found in fields, overgrazed pastures, yards, road sides, waste areas, barn yards, it can grow in sandy soil, dry soil, and rich moist soil.Weed Classification: CWhy is it a Noxious Weed?Buffalobur is toxic to livestock, and spreads easily in pastures and fields outcompeting desired …
Weed Control - Oct. 6, 2022, 9:32 a.m.
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Common Tansy
Tanacetum vulgare Common Tansy- This pungent perennial grows up to 5' tall and spreads via wind-dispersed seeds, as well as by rhizomes.Leaves: Alternate and pinnately compound, they are deeply divided into toothed segments and become smaller towards the top of the stalk.Flowers: Flowers bloom from July to October. Numerous clusters of button-like yellow flowers that have a flat top and are 1/4 to 1/2 inches wide.Habitat: It is extremely common to find along roadsides, waste areas, stream banks and in pastures.Weed Classification: BWhy is it a Noxious Weed? Because of its aggressive nature and risk of toxicity to livestock. Like …
Weed Control - Sept. 29, 2022, 9:46 a.m.
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Tree of Heaven
Ailanthus altissima Tree of Heaven - A deciduous tree growing up to 60 feet tall. Plant parts may be identified by a distinctive peanut butter/popcorn smell.Leaves: Leaves are compound and alternate, and each leaf has anywhere from 10-27 leaflets usually. Leaflets are mostly smooth-edged, except for a few rounded teeth and a visibly large gland on the underside, towards the base of the leaf.Flowers: Flowers bloom from May-July. Trees will either have male or female flower clusters at the tips of the stems with the male flowers being larger. Flowers are light green-yellow in color.Habitat: Commonly found near forest edges, …
Weed Control - Oct. 6, 2022, 9:32 a.m.
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Invasive Pests, Weeds & Insects Workshop
Invasive Pests, Weeds & Insects Workshop Hold the date for the upcoming workshop on weed & insect pest management. The program will be held on Thursday, April 18, 2012 at the Southwest Washington Fairgrounds. The session will start at 8:30 AM and will wrap up at 12:30PM. Topics will include: management of woody plants and noxious weeds utilizing selective herbicides, new invading weeds and insect’s pests to Southwest Washington and refining your Integrated Pest Management Program. There is no cost for the program sponsored by the Lewis County Noxious Weed Control Board and WSU Lewis County Extension. We would prefer …
Weed Control - March 6, 2013, 11:11 a.m.
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Yellow Toadflax
Linaria vulgaris Yellow Toadflax - A perennial growing 8-31 inches tall from creeping roots. Forms colonies.Leaves: Many narrow, linear leaves up to 4 inches in length, alternating along the stem.Flowers: Flowers bloom from June-September. Many flowers crowd the top 2-9 inches of the plant. Flowers are yellow, hairy, and have orange "throats." Resembles snapdragons.Habitat: Grows in a variety of habitats, including: roadsides, edges of fields, rangelands, meadows, cultivated fields, and waste areas.Weed Classification: CWhy is it a Noxious Weed?It can easily invade range and farmlands outcompeting desirable crops/forage. Livestock will rarely eat the plant.Yellow Toadflax can infest cultivated land easily, …
Weed Control - Oct. 6, 2022, 9:33 a.m.
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Italian Arum from a friend’s garden is not a gift to your landscape
The Italian Arum’s common names of ‘Italian Lily’ and ‘Italian Lords and Ladies’ may stoke the gardener’s imagination but the actual plant is far from enticing. Aside from having poisonous plant parts, its single spadix flower is unpleasant-smelling. These disagreeable features however are not what makes this plant a noxious weed. Having two ways of forming thick colonies, the Italian Arum will quickly crowd out native plants and destroy riparian habitats. First, birds will eat and disperse the bright red berries making the potential for escape from home gardens into natural areas high. Second, its numerous daughter tubers easily detach …
Weed Control - June 4, 2018, 2:08 p.m.
