The common Sundrop is absolutely wonderful for any sunny spot. It will put up with almost any soil, reproduce rapidly, choke out "weeds", needs little maintenance or water, and blooms for at least two months with a great reddish cast before and after. Zone 4, Minnesota is where I am from. Submitted by Bevely Benter
- Zones: 4 - 8, depending on species
- Colors: Yellow
- Height: 6 - 18" Width: 12 - 18"
- Bloom Period: Summer through Fall
- Exposure: Full Sun
- Notes: Unlike its cousin O. biennis, the Evening Primrose, O. macrocarpa stays in bloom all day. It can become invasive, so pick a good spot for it.