Sacramento is a great place for spiders that hang out on flowers instead of messing around with webs. We have jumping spiders, lynx spiders and crab spiders. Jumping spiders are the most active and have large eyes for spotting prey. Lynx spiders and crab spiders lie in wait for their prey to come to them.
These creatures don’t build webs; instead, they hunt by day, devouring insect pests. Most people, arachnophobes excluded, consider them beneficial. These spiders are so small that you really have to look for them, so even arachnophobes could probably live with a few of them in their flowers.
None of them are poisonous, as far as I know. I once got bitten by a larger, scarier-looking jumping spider (Phidippus johnsoni, in case you really want to know) and lived to tell the tale, although it did hurt a bit. I’ve never seen this species in Sacramento, but we have the equally stylish Phidippus audax, dressed fashionably in black and white with green chelicerae accents.