How to grow common evening primrose

When to plant common evening primrose

Common evening primrose is a biennial: NC State describes a basal rosette the first year, a flowering stem the second year (blooming summer to fall, June to September), and easy naturalizing by self-seeding. No explicit sowing date is given, so a spring band is approximate.

Common Evening Primrose is timed by season rather than your frost dates, so the planting calendar does not generate ZIP-specific dates for it. Check the cited sources below to fine-tune for your area.