Ajuga Rainbow

Description

Ajuga ‘Rainbow’ – variegated bugle

Botanical name: Ajuga reptans ‘Rainbow’
Common names: Bugle, carpet bugle
Family: Lamiaceae (mint family)
Plant type: Evergreen perennial
Habit: Low, mat-forming and spreading
Pot size: 1 litre pot
Eventual size: Approx. 10–15cm tall in flower × 30–45cm spread
Foliage: Variegated leaves splashed bronze, pink and cream, brightest in good light; evergreen
Flowers: Spikes of deep blue flowers, spring to early summer (April–June)
Scent: Not scented
Aspect / light: Partial shade to full sun
Soil: Most soils; moist but not waterlogged; any pH
Hardiness: RHS H6 (hardy, to about −20°C); USDA zones 4–9
Exposure: Sheltered or exposed; tolerant
Native range: Species native to Europe
Toxicity / pet & child safety: Generally considered non-toxic to people, cats and dogs

Ajuga ‘Rainbow’ is a colourful creeping bugle with variegated foliage splashed in bronze, pink and cream, brightest in good light. Blue flower spikes appear in spring, providing attractive evergreen groundcover for borders and containers.

GardenAdvice notes

A low, mat-forming evergreen perennial in the mint family, this bugle spreads by short runners to weave a dense, weed-suppressing carpet. It is grown chiefly for its handsome foliage, which holds colour year-round, with the bonus of blue flower spikes in spring, and it is one of the most reliable evergreen groundcovers for sun or shade.

Growing & planting

Plant in autumn or spring in moist but well-drained soil in partial shade or sun. Leaf colour is usually richest in good light with some shelter from fierce midday sun. It tolerates most soils provided they neither bake dry nor sit waterlogged. Space about 30cm apart to form continuous groundcover.

Care & maintenance

Very low-maintenance. Keep the soil from drying out while establishing, trim off faded flower spikes, and lift and split congested mats every few years to maintain vigour. Remove any reverting shoots to keep coloured or variegated forms true.

Propagation

• Division: Lift and divide established mats in spring or autumn, replanting sections immediately.
• Runners: Detach rooted plantlets from the runners through the growing season and replant or pot on.

Pests & diseases

Generally trouble-free. Crown and root rot can occur in wet, poorly drained soil, and powdery mildew may appear if plants dry out in hot weather. Slugs and snails occasionally graze new growth. Good drainage with steady moisture prevents most problems.

Uses in the garden

Ideal as evergreen groundcover for the front of borders, shaded and difficult spots, softening bed and path edges, and adding foliage colour to mixed containers.

Wildlife value

The spring flower spikes provide an early source of nectar for bees and other pollinating insects.

Toxicity & safety

Ajuga is generally regarded as non-toxic to people and to cats and dogs, making it a good choice for family and pet-friendly gardens.

GardenAdvice tip

‘Rainbow’ (sometimes sold as ‘Multicolor’) shows its best colours in good light — in deep shade the pink and cream fade to green. It can be a little less robust than the plain bugles, so give it a favourable, sheltered spot, and remove any all-green shoots promptly so they don’t take over the variegation.

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