Alyssum spinosum1 / 3

Key characteristics

Family
Brassicaceae
Height
8 in to 12 in
Width
18 in to 24 in
Flower color
White to pale pink four petaled flowers
Foliage color
Gray green narrow leaves on thorny branching stems
Bloom time
Mid to late spring
Light
Full sun
Water
Low
Maintenance
Low; prune lightly after flowering to maintain a compact shape
Growing zone
USDA zones 5 to 9
Wildlife
Bees, butterflies and other pollinators attracted to the nectar rich flowers

Groundcovers

Alyssum spinosum

Spiny Madwort

Alyssum spinosum produces masses of tiny, four-petaled white to soft pink flowers in mid to late spring, covering the branches and attracting bees and other early pollinators. Small, narrow gray-green leaves are softly hairy and closely spaced along rigid, thorny stems, forming a dense, finely textured mound that remains attractive throughout the year. The intricate branching creates a naturally sculptural framework, while the profusion of blooms softens the plant's spiny character during the flowering season.

Light
Full sun
Water
Low
Bloom time
Mid to late spring

Works well in

  • Coastal Gardens
  • Borders
  • Pollinator Gardens
  • Rock Gardens

Companion plants

Lavender · Helianthemum · Santolina · Thyme · Sedums · Euphorbias

Design tip

Position among rocks, gravel, or retaining walls where its compact evergreen form softens hard edges without concealing stonework.

Where to see it

This plant can be seen at the Bellevue Botanical Garden.

More groundcovers