Alyssum Growing Guide

Lobularia maritima


Crop Rotation Group

Brassicas (Cabbage family) 


Average garden soil.


Full sun to partial afternoon shade.

Frost tolerant

Alyssum seedlings can tolerate light frost, but plants are often killed by freezing temperatures.


Fast growth is encouraged by mixing a balanced organic fertiliser into the soil before planting. Encourage reblooming with a liquid feed.


In white or pastel shades, alyssum in the perfect little flower to tuck into the corners of beds, or you can grow it beneath tall vegetables or among herbs. Alyssum is famous for attracting tiny wasps and other beneficial insects.


Single Plants: 15cm (5") each way (minimum)
Rows: 15cm (5") with 15cm (5") row gap (minimum)

Sow and Plant

Sow alyssum from early spring to early summer, and in autumn where winters are mild. Alyssum grows fast and often stops blooming in hot weather. Broadcast seeds into cultivated soil or containers about 2 inches (5cm) apart, and barely cover them with soil. When the seedlings have more than four leaves, thin to 6 inches (15 cm) apart in all directions.
Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area.


Can reseed if allowed to do so, but extra seedlings are easy to lift and move or pull out.


Tired alyssum plants often melt down in hot, humid conditions. As annual flowers go, they are short-lived.

Planting and Harvesting Calendar

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Pests which Affect Alyssum