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How to Care for Evening Primrose

By Sarah Terry ; Updated September 21, 2017

The evening primrose is an herb-like perennial plant that usually grows up to 19 1/2 inches tall but can sometimes reach heights of 4 to 5 feet. The evening primrose has hairy leaves that emit a lemon odor and bright yellow, 2 1/2-inch wide flower spikes that bloom in the evening and close during the daytime. The evening primrose blooms throughout the summer and autumn. The entire plant is edible and often used for medicinal purposes. The oils in the plant’s seeds contain gamma-linolenic acid (GLA), an essential fatty acid.

Plant your evening primrose in the winter, in full sunlight and fertile, well-draining soil. If you’re planting multiple evening primroses, space the plants about 1 1/2 to 2 feet apart.

Water your evening primrose once or twice each week to supplement rainfall during the growing season to keep the soil slightly moist at all times. Wait until the top 1 to 2 inches of soil dries before watering.

Feed your evening primrose an all-purpose, liquid flower fertilizer once each month throughout the growing season.

Prune away any crowded stems. Cut back the evening primrose after it finishes flowering and remove the spent blooms to promote re-blooming.

 

Things You Will Need

  • Garden hose or watering can
  • Liquid flower fertilizer
  • Pruning shears

Tip

  • If you're growing an evening primrose indoors, place the plant beside a sunny, south-facing window.

Warning

  • Avoid planting your evening primrose close to taller plants. Not only will the taller plants shade the evening primrose, but they will also steal nutrients and water from the evening primrose.

About the Author

 

Sarah Terry brings over 10 years of experience writing novels, business-to-business newsletters and a plethora of how-to articles. Terry has written articles and publications for a wide range of markets and subject matters, including Medicine & Health, Eli Financial, Dartnell Publications and Eli Journals.