Yellow Starthistle - UC Pest Management Guidelines
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Scan day: 05 March 2014 UTC
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Description: University of California guidelines for control of Yellow Starthistle, including identification and biology.
Yellow Starthistle Management Guidelines--UC IPM Pests in Gardens and Landscapes Seedling of yellow starthistle, Seedling of yellow starthistle. Damage to a starthistle seed head by , is native to Eurasia and was introduced to California around 1850 via South America. It is now common in open areas on roadsides, rangeland, wildlands, hay fields, pastures, and waste areas. Recent reports indicate that yellow starthistle infests between 10 and 15 million acres in California. Disturbances created by cultivation, poorly timed mowing, road building and maintenance, or overgrazing favor this rapid colonizer. It forms dense infestations and rapidly depletes soil moisture, thus preventing the establishment of other species. It is also poisonous to horses, causing a nervous disorder called “chewing disease” (nigropallidal encephalomalacia), which is fatal once symptoms develop. Horses are the only animal known to be affected in this manner and should not be allowed to graze on yellow starthistle.
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| Page title: | Yellow Starthistle Management Guidelines--UC IPM |
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| Description: | UC home and landscape guidelines for control of Yellow Starthistle. |
| IP-address: | 169.237.140.1 |
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| NS | Name Servers: DNS-ONE.UCDAVIS.EDU 128.120.252.9, 2607:f810:3f0:1::1 DNS-TWO.UCDAVIS.EDU 128.120.252.10, 2607:f810:3f0:2::2 |
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| Date | activated: 19-Mar-1986 last updated: 09-Jul-2013 expires: 31-Jul-2014 |