Tough plant that tolerates poor soils, including clay. Good candidate for xeriscaping (once established), borders, and rocks gardens. It may get aggressive if your soil is quite fertile, so it’s best in “problem areas”. It will develop better in looser soil. If starting from seed, will bloom second year.
It can take heat and humidity.
Pollinated by Sphinx Moth, which is actually in some amount of trouble due to native habitat being disturbed.
Reportedly somewhat difficult to grow by seed. In some cases might need some cold moist stratification, most easily achieved by planting it out in late fall in a protected location.
These estimates for how long Evening Primrose takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average 11 days | Min 11 days | Max 11 days (1)
Average 53 days | Min 53 days | Max 53 days (1)
Average days | Min days | Max days (0)
Sundrops, Ozark Sundrops
Oenothera macrocarpa