Border Builder

Sweet alyssum

Lobularia maritima

Illustration of Sweet alyssum

Sweet alyssum is an annual for edging, groundcover, suited to full sun and loam, sandy soil or chalk, flowering Jun, Jul, Aug, Sep, Oct.

TypeAnnual
Mature height15 cm
Spread30 cm
Aspectfull sun
FoliageDeciduous
HardinessUSDA 7a-9b, RHS H3
Pollinator-friendlyYes
Pet-safeYes

Where to use it in a border

At around 15 cm, it sits best along the front edge, where a low, spreading habit reads best. Give it about 30 cm of room to spread, roughly 3 to the metre when planted in a drift. It is hardy across USDA zones 7a to 9b and rated H3 by the RHS, so check it suits your area before planting.

It appears in our lists of full sun, sandy soil, chalk soil, pollinator-friendly plants, pet-safe plants.

Border Builder uses Sweet alyssum's height, spread, soil, bloom months and companions to place it in a full border plan for your own conditions, on iPhone and iPad.

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Flowering through the year

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Worth knowing

Good companions

Plants that share its conditions and style, chosen to complement its place in the border:

Garden styles

Coastal Cottage garden Wildlife garden