penstemon This perennial is easy to grow from seeds planted in spring to early summer. It's somewhat slow to start and needs 10 to 21 days to germinate. ... How to Grow and Care for Beardtongue (Penstemon) Common Name Beardtongue Soil Type Well-drained Soil pH Neutral to acidic Bloom Time Spring, summer Flower Color Purple, blue, orange, red, yellow, pink, white lewisia Perennial Honors Special Event in U.S. History Botanical Name Lewisia cotyledon 'Rainbow' Bloom Time April, May, and June Flower Color Salmon, white, orange, pink, rose, or yellow Hardiness Zones 5 to 8 Native Area Several western states of the U.S., and British Columbia in Canada blackberry lily How to Grow and Care for Blackberry Lily Common Name Blackberry lily; leopard lily Soil pH Slightly acidic to slightly alkaline (6.1 to 7.8) Bloom Time Mid to late summer Flower Color Orange or yellow with red spots Hardiness Zones 5–10 (USDA)