Native to southwest U.S., this yellow evening primrose grows to 6-12 inches tall and 5 inches wide. Blooms from late spring to early fall with pure yellow flowers. Give some shade in hotter climates. Slightly fragrant, blooming in the late spring to summer. This showy variety is perfect for almost any garden or meadow and even tolerates light shade. Missouri Primrose also self-seeds, coming back year after year.Evening Primrose is a hardy plant that does best on poor soils provided they are well drained. It does best in sandy soil but will tolerate almost anything that is not too wet. It prefers a position in full sun but will grow well in areas where it can get sun part of the day. It will not grow in shade. Once established the plants are extremely drought resistant and will continue to flower during hot dry periods.Hardy to zones 3-7
|How To Grow Evening Primrose From Seed|
Sow the seed in late spring. Choose soil that is well-drained and in a sunny position. The type of soil isn't really an issue provided it drains well. Evening primrose will grow in cool, warm, hot, arid, places; it's not too fussy.
When growing indoors, sow the seed thinly in pots containing seed starting compost. Press seeds in lightly, do not cover the seeds with soil as they need light to germinate. Make sure the compost is kept moist but not wet.
|Seeds germinate in 15 to 30 days at 18 to 21°C (65 to 70°F). Transplant to individual pots when seedlings are large enough to handle and plant outside when rosettes are at least 7cm (3in) across. If planting in full sun area pick a cloudy day so plants have time to adjust to their new surroundings before the full sun hits them.|
In outdoor beds, once the seedlings have developed two pairs of true leaves, thin out the weakest seedlings. Space seedlings or thin plants to 45cm (18in) apart. Grow in full sun and plant out in spring after all frosts. Water in well until plants have established then they can be ignored.
No care or maintenance is needed once plants are growing just cut down the stems at the end of the flowering period. Plant may reseed themselves but need to be in areas where they are not disturbed to develop for the following year. If intending to allow reseeding be aware of the rosettes and don't weed out. If mowing keep blade high to miss the low growing rosette.