![]() The species is nearly self-incompatible, and a plant produces many more seeds when crossed with a less closely related individual, such as a plant from a separate population. The plant is thought to be pollinated by bumblebees, including Bombus californicus. It is the only Castilleja with yellow bracts within its range in the Pacific Northwest. The inflorescence contains bright golden yellow bracts with small green flowers tucked between them. īright yellow bracts of Castilleja levisecta are more tightly pressed against the stem than bracts of many other Castilleja species The leaves are green, containing chlorophyll to undergo photosynthesis, but like other Castilleja it is a hemiparasite, capable of tapping the roots of other plants via haustorial connections to obtain nutrients and water. This is a perennial herb growing in clumps of up to fifteen stems. Description Ĭastilleja levisecta (golden paintbrush) was first collected as a modern botanical specimen near Mill Plain, Washington, by Thomas Jefferson Howell in 1880 and was described by Jesse More Greenman in 1898 (Greenman 1898). On June 30, 2021, the plant was proposed for delisting due to recovery. The plant is a federally listed endangered species of Canada and was listed as threatened in the United States in 1997. It has been reintroduced to a few areas in Oregon, but it remains to be seen if the plants will survive. It occurred in Oregon but all natural occurrences there have been extirpated. ![]() It is native to British Columbia and Washington, where it is known from eleven remaining populations. Washington State Noxious Weed Control Board orange hawkweed webpage.Castilleja levisecta is a rare species of flowering plant in the family Orobanchaceae known by the common name golden paintbrush, or golden Indian paintbrush, listed under the Endangered Species Act in 1997.Oregon Department of Agriculture PDF weed profile for orange hawkweed.Put all pulled plants, bulbs, or seeds into a plastic bag and put the bag in the trash.Never throw pulled plants on the ground or into the street or sidewalk.Never place plants or seeds in your compost or yard debris.Other hawkweeds have yellow or white flowers. In flower though, there are no plants that look like orange hawkweed. Hawkweeds are generally known for their hairy leaves, but without flowers, it is difficult to tell orange hawkweed from other hawkweeds. Be careful when trading plants with neighbors and fellow gardeners to make sure you’re not trading this or any other plant of concern. Cleaning boots and pets keeps invasive plants from spreading to new places. There are now many groups who can suggest new plants.Ĭlean your boots, pets, and maybe even your tires when you finish a hike or trail ride in Pacific Northwest natural areas, or if you have invasive plants on your own property. After a year or two of managing this plant, consider planting native or less aggressive non-native plants. Check the site for new plants at least once a year and especially for the first 2-3 years after removal. Herbicide treatment options are limited in cities, but large patches in forested and rural areas have been more successfully managed with herbicide. Digging is the best way to manage small patches. Digging orange hawkweed can be effective, but remove as many roots and runners as possible. In the spring, orange hawkweed plants emerge as flat circles of leaves. You may also contact Portland’s Environmental Services (contact information on this page), who will notify the State for you and help you remove these plants. Use the online tool at Oregon Invasives Hotline or call 866-INVADER to let the State know when and where you found this plant. ![]() Oregon law requires that you report all sightings immediately for assistance.
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