Evening Primrose, Missouri
(Oenothera macrocarpa)

Missouri Evening Primrose, formerly Oenothera missouriensis, is also known as Dwarf Evening Primrose. This tap-rooted perennial produces large, clear yellow flowers that stay open only one day. Plants, however, have a long bloom time, from mid-June through August. Plants are native to the southern and central United States and typically found in poor soils on prairies, cliffs, hillsides, and slopes. Full to partial sun and well-drained soils with dry conditions are preferred. Recipient of the Royal Horticultural Society’s Award of Garden Merit for reliable performance in the garden.