Wine Cups or Purple Poppymallow is a native groundcover which forms a wide sprawling mat of green dissected leaves. The large magenta-purple cup-shaped flowers appear from late spring through summer, and are especially showy on sunny days. Callirhoe involucrata produces a deep tap roof, which makes it tolerant of dry conditions but difficult to move. Host plant for Gray Hairstreak. The sprawling habit would make Wine Cups a good candidate for walls and rock gardens.