Zizia aurea Golden Alexanders Description Tiny yellow umbels shaped flowers top this carefree plant. Blooming late spring to early summer.Thrives in sunny meadows and open woodlands. Excellent pollinator food source. Tolerates moist soils well. Sizes & Prices All Zizia Characteristics Hardiness Zone: 3-9 Light requirements: Sun/Part Sun Height: 24-30" Native: Yes Sizes & Prices Size: 2 Yr $14.98 Other Information Zizia aurea Golden Alexanders Zone: 3-9 Sun/Part Sun HT: 24-30"