How to Plant Alyssum Seeds


Gardeners grow sweet alyssum (Lobularia maritima) as an annual wildflower and edging plant. The 1/2-foot plant produces a profusion of pink, purple or white blossoms and thrives in USDA hardiness zones 9 through 10, according to the University of Florida. Instead of buying started alyssum seedlings, sow the plant's seeds for a cheaper method of establishing a sweet alyssum flower bed or border.

Step 1

Choose a site for your alyssum plants. The flowers thrive best in partial sun and well-drained soil.

Step 2

Prepare the garden site. Use a spade or mechanical rototiller to loosen the soil to a depth of 10 inches, then add an inch of compost and mix it thoroughly into the dirt, according to Colorado State University.

Step 3

Fertilize the flower bed for enhanced alyssum seedling establishment. Clemson University recommends using an all-purpose 10-10-10 fertilizer, spread at the rate of 1/2 lb. for every 50 square feet of flower bed.

Step 4

Plant the alyssum seeds. Scatter them across the surface of the bare soil at a rate of two to three seeds per square inch. Don't bury the seeds, as alyssum requires sunlight to germinate, according to Michigan State University.

Step 5

Water the flower bed by misting the soil surface twice a day to keep the top inch moist. The alyssum seeds will typically germinate within 14 days.

Tips and Warnings

  • Sweet alyssum reseeds itself and may sometimes escape its flower bed, appearing in other areas of your landscape.

Things You'll Need

  • Spade
  • Compost
  • Fertilizer
  • Sweet alyssum seeds
  • Water


  • "Taylor's Guide to Annuals;" Barbara Ellis; 2000
  • University of Florida: Lobularia Maritima
  • Colorado State University: Growing Plants from Seed
  • Clemson University: Growing Annuals
  • Michigan State University: Sweet Alyssum
Keywords: start alyssum seeds, plant alyssum seeds, grow alyssum seeds

About this Author

Josh Duvauchelle is an editor and journalist with more than 10 years' experience. His work has appeared in various magazines, including "Honolulu Magazine," which has more paid subscribers than any other magazine in Hawaii. He graduated with honors from Trinity Western University, holding a Bachelor of Arts in professional communications, and earned a certificate in applied leadership and public affairs from the Laurentian Leadership Centre.