Richard Smith is the Vegetable Crops and Weed Science Farm Advisor in Monterey County, California. Impatiens Necrotic Spot Virus (INSV) in the Salinas Valley is a tospovirus that is spread primarily by western flower thrips (Frankliniella occidentalis).
I was out in the field today and drove by this fallow field and did two things. First, since I'm a weed scientist, I stopped to take a photo of this weedy streak. Second, because I know the site manager and know he hates weeds, I called to give him a hard time about "missing one".
Stinknet (Oncosiphon piluliferum, aka globe chamomile) is a winter annual that is spreading across Southern California and poses threats to wildlands, rangelands and agricultural areas. Stinknet was first found in western Riverside County in the early 1980's.