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UC Weed Science (weed control, management, ecology, and minutia)
If you don't already have a copy of Weeds of California and Other Western States, here's your chance to get it at lowest price I've seen: $45.00 (this price is good through May 6, 2021.
Yellow Starthistle is a plant of Old-World origin that arrived in California in the mid 1800's. It is believed that it made its way to California in contaminated alfalfa seed from Europe.
From Farm Progress (https://www.farmprogress.com/weeds/international-effort-combat-crop-threatening-weeds) ************** Anne Manning | Apr 22, 2021 Every multi-acre farmer and backyard gardener knows weeds are a constant, formidable foe of successful plant production.
From Western FarmPress Written by Todd Fitchette | Apr 20, 2021 California rice growers with troublesome patches of weedy rice, or red rice, may want to take advantage of the drought and low water allocations to fallow those fields with known populations of the plant.
From roadsides in the city of Fresno to the oak woodlands in nearby Sequoia National Park, annual barleys and bromes are going to seed. In addition to a variety of other grasses, I often hear landowners, weed managers, pet owners, and veterinary advice blogs call these species "foxtails".