How to Grow White Alyssum
White Alyssum
Lobularia maritima 'white'
flowerWhite alyssum is a delicate, low-growing annual flower beloved for its tiny, fragrant white blooms that form dense clusters. It's a classic edging and border plant that blooms prolifically from spring through fall, attracting pollinators with its sweet honey-like scent. This easy-to-grow flower is perfect for containers, hanging baskets, and ground covers.
Looking for a specific variety?
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives as an annual in zones 2-11; grown as a perennial in zones 9-11
Sign up to see your zone highlighted.
Growth Stages
Germination
7-14 daysTiny seedlings emerge with cotyledons (seed leaves); plants are very delicate and small.
Keep soil consistently moist but not soggy. Provide bright light (no direct hot afternoon sun if indoors). Avoid overwatering to prevent damping off.
Seedling Development
2-3 weeksTrue leaves appear; plants develop their characteristic narrow, linear foliage and begin to branch.
Thin seedlings to proper spacing. Provide good air circulation to prevent fungal issues. Begin hardening off indoor-started plants.
Vegetative Growth
2-4 weeksPlant becomes bushy and compact with dense foliage; small buds begin to form at branch tips.
Pinch back growing tips to encourage branching and fuller plants. Water moderately. Apply balanced fertilizer every 3-4 weeks if desired.
Flowering
8-12 weeks or until frostTiny, delicate white flowers bloom in dense clusters; plant becomes increasingly covered with fragrant blooms.
Deadhead spent flowers to encourage continuous blooming. Increase watering if temperatures rise. Apply bloom-promoting fertilizer if desired.
Decline/Cleanup
4-8 weeks (variable)As temperatures cool (or in zones 9-11, in mid-summer heat), flowering may slow; plant may become straggly.
In zones 2-8, allow to decline and remove before frost. In warmer zones, cut back by 1/3 in mid-summer to rejuvenate. Collect seeds for next year if desired.
Common Pests
-
Use row covers on young plants; apply neem oil or insecticidal soap; encourage beneficial insects
-
Spray with insecticidal soap or neem oil; yellow sticky traps; increase air circulation
-
Strong water spray to dislodge; insecticidal soap; attract beneficial insects like ladybugs
-
Increase humidity and misting; spray with water or neem oil; remove heavily infested leaves
Uses
Cut flowers and arrangements
CraftWhite alyssum flowers are popular in floral arrangements, wedding bouquets, and as filler flowers due to their delicate appearance and sweet fragrance. They pair beautifully with larger focal flowers and add an airy, romantic quality to arrangements. [source]
Pollinator attractor
WildlifeThe fragrant white flowers attract bees, butterflies, and other beneficial insects, making alyssum an excellent plant for supporting pollinator populations in gardens. Its abundant nectar and pollen make it a valuable food source. [source]
Edging and border planting
HouseholdWhite alyssum is traditionally used to edge garden beds, line walkways, and create soft borders around larger plants. Its low, spreading growth habit and continuous bloom make it ideal for creating visual definition in garden spaces. [source]
Edible flowers
CulinaryWhite alyssum flowers are edible with a mild, slightly peppery flavor and are sometimes used as garnishes in salads and desserts. They add delicate beauty to culinary presentations. [source]
Container and hanging basket gardening
HouseholdThe trailing, spreading growth habit makes white alyssum perfect for containers, window boxes, and hanging baskets, where it will cascade gracefully and bloom abundantly. [source]
Harvest Tips
Alyssum is primarily grown for ornamental flowers rather than harvest. Deadhead spent flower clusters regularly to promote continuous blooming throughout the season. Cut flowers last 5-7 days in a vase and smell wonderful. To collect seeds, allow some flowers to fade on the plant; seed pods will dry and can be collected in late summer.
Fun Facts
- 🌱 Despite its common name 'alyssum,' this plant was reclassified from the genus Alyssum to Lobularia in 1827, though the common name persisted in popular use.
- 🌱 White alyssum produces thousands of tiny seeds that can self-sow readily in warm climates, often returning year after year without replanting.
- 🌱 The scientific name 'maritima' refers to its original habitat along Mediterranean coastal regions, where it thrives in sandy, salty soils.
Want personalized planting timelines?
Sign up to get frost dates, task lists, and more for your zone.
Get started free