Sweet Alyssum

Sweet Alyssum (Lobularia maritima) is a low-growing flowering annual in the Brassicaceae family, producing dense clusters of tiny, honey-scented white, pink, or purple blossoms. It is valued both as an ornamental edging plant and as a functional companion plant that attracts beneficial insects and pollinators. Tall, highly branched strains provide exceptional coverage and make useful additions to cut flower gardens. It readily re-seeds itself, naturalising reliably in suitable conditions.

Growing

Start seeds indoors 6–8 weeks before transplanting, sowing at 18–21 °C for germination. Sow seeds 0.6 cm deep, placing 2 seeds every 15 cm; thin to final spacing of 15 cm. Alternatively, direct sow outdoors once soil temperature reaches 10 °C and nights remain above 5 °C. Seeds germinate in 7–14 days. Transplant seedlings once nights consistently stay above 5 °C, hardening off over 7–10 days beforehand.

Care

Water regularly but avoid waterlogging; sweet alyssum tolerates brief dry spells once established. Apply a balanced fertiliser at planting and once mid-season; avoid excessive nitrogen, which promotes foliage over flowers. Shear plants back by one-third when flowering slows to encourage a flush of new blooms. No staking required for standard varieties; tall branching strains may benefit from light support in exposed positions.

Harvest

Cut stems for arrangements once at least half the flowers on a spray are open. For use as a pollinator strip, allow plants to flower continuously without cutting. Deadhead spent flower clusters to extend the blooming period. Plants are ready to harvest for fresh use from 50–60 days after sowing.

In the kitchen

Sweet alyssum flowers are edible and mildly honey-scented; scatter individual florets over salads, desserts, and cold drinks for visual appeal and a delicate flavour. Use whole sprigs as a garnish for cheese boards or canapés. The flavour is mild and not overpowering, complementing both sweet and savoury dishes.

Storing

Use fresh-cut stems in water within 3–5 days. Keep cut stems in a cool location away from direct heat. Edible flowers can be refrigerated loosely wrapped in damp paper towel in a sealed container for up to 2 days. For longer preservation, press and dry flowers for decorative use; they do not freeze well for culinary purposes.