Deer Weed is a small  airy shrub  with delicate leaves and profuse bright yellow flowers in spring. You will see it growing in masses on hillsides in the chaparral  brightening the whole hillside. Deer Weed can be drought deciduous in the toughest of climates  but provides a nice  fast-growing filler under large shrubs  or mixed with other flowering natives in a bed or border. It is attractive to butterflies and also a nitrogen fixer.