California goldenrod
A showy and easy to grow late blooming native perennial. Spreads by creeping rootstocks where it can form a good-sized colony. Has spread slowly in our heavy clay soils with minimal water, but has the potential to spread aggressively in lighter soils especially with regular water. Late summer through fall brings slender wand-like flower stalks of golden yellow daisies 2 - 3 ft. tall which are visited by bees, butterflies and other insects. Plant in a sunny area where it is drought tolerant, but some supplemental summer water keeps it blooming longer.