cypress spurge Euphorbia cyparissias Type:groundcover, perennials that last Notable Traits:fast-growing, green roof plants, low-maintenance, resistant: deer, resistant: disease, resistant: rabbit, striking foliage, tolerates clay soil, tolerates harsh roadside conditions, trailing habit Hardiness:Zone 4 – 8 Mature Height:8-12in Light:part sun/afternoon shade (eastern exposure), part sun/morning shade (western exposure), part to full sun (4 hours or more sun), sun (8+ hrs) Water:drought tolerant Bloom Color:yellow Bloom Shape:flathead Bloom Time:spring Foliage:blue, green Description Narrow blue-green foliage resembles spruce or cypress and spreads by rhizome to form a low, drought tolerant ground cover. Tiny yellow flowers appear in umbel clusters in spring. Like other euphorbias, stems and leaves contain a milky sap.