Sweet Alyssum in Zone 9b
Lobularia maritima
| Start indoors | Dec 28–Jan 4 '27 |
|---|---|
| Direct sow / transplant outside | Feb 15–Feb 22 |
| Estimated bloom | ~40 days after planting |
Spacing: 3 per square foot (square-foot-gardening spacing).
Good companions
- Broccoli — A published field study found sweet alyssum intercropping attracts hoverflies that reduce aphid pressure on nearby brassicas.
- Lettuce — Used commercially as an intercrop with lettuce to attract aphid-eating hoverflies.
Where to buy sweet alyssum seeds
Some links on this page go to retailers we may eventually earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews — see the sources cited on each item.
See it growing
Search YouTube for "growing sweet alyssum" videos → (a live search, not a hand-picked video — results vary and aren't vetted by us)
← Back to the full zone 9b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →