evening primrose

For optimal growth of an evening primrose, water it deeply about once a week. Make sure to check the soil before you water. If the soil is still moist, then wait another day or 2 before watering again. During periods of hot and dry weather, an evening primrose may need more frequent watering, such as once every 5-7 days. A good rule of thumb is to water when the top inch or 2 of soil is dry to the touch. Providing extra water can also help an evening primrose thrive in hot, dry climates.

Evening primrose (Oenothera 'Innoeno131' LEMON DROP) prefers full sun and can tolerate some partial sun, but should be kept in an area with at least 6 to 8 hours of sunlight daily. If the plant does not receive enough sun, growth and color development will be affected. It is best to grow this species in a location that gets full sunlight in the morning, and partial shade in the afternoon, if possible. During the summer months, evening primrose 'Innoeno131' LEMON DROP requires 8 to 10 hours of sun and the intensity of the sunlight should be moderate. During the winter months, the plant requires about 6 to 8 hours of sun.

Evening primrose (Oenothera 'Innoeno131' LEMON DROP) should be pruned twice a year, in late spring and then again in late summer. In late spring, prune off any dead flower heads and foliage to encourage more vigorous flowers for the summer season. In late summer, prune the entire plant back by about 1-third. This will control the size, the shape, and the number of flowers the plant produces. Pruning will also help keep the evening primrose looking its best.