Heather

Shrub

Calluna vulgaris

Heather

Low evergreen shrub for acid soil, smothered in spikes of pink, purple or white bells in late summer; superb for bees.

  • Full sun
  • 20–60 cm (8–24 in)
  • 30–60 cm (12–24 in)
  • H7 · Zone 5
  • July–October
  • Evergreen

Overview

Heather, also called ling or Scotch heather, is a low evergreen shrub of the heaths and moors of Europe and Asia Minor. Tiny scale-like leaves cover wiry stems, and spikes of small pink, mauve or white bells flower from midsummer into autumn.

It is hardy to below −25°C (−13°F), USDA zones 4–6, but needs acid, free-draining soil that doesn't dry out, and full sun. It dislikes hot, humid summers and rots where nights stay warm, so it suits cool, maritime climates best.

It has naturalised in parts of the north-eastern United States and is a declared weed in parts of New Zealand.

At a Glance

Sun Full sun
Height 20–60 cm (8–24 in)
Spread 30–60 cm (12–24 in)
Hardiness H7 · Zone 5
Flowers July–October
Soil Clay, Loam, Sand
Moisture Moist well drained
Habit Rounded, Spreading
Water Moderate
Maintenance Moderate

Growing Conditions

Min. Temperature -25°C (-13°F)
pH Range 4.5–6
Fertility Poor
Drainage Free Draining

Aspect Suitability

  • East-facing
  • South-facing
  • West-facing

Site Tolerance

  • Exposed sites
  • Wind
  • Coastal

Soil Tolerance

  • Clay
  • Sandy
  • Loam
  • Acid

Foliage

Persistence Evergreen
Colour Dark green
Leaf shape / texture Tiny, scale-like

Foliage interest: 12 months of the year

Seasonal Timeline

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowering
Foliage
Propagate
  • Flowering Jul Aug Sep Oct
  • Foliage 12 months of the year
  • Propagate Jul Aug Sep

How to propagate

Ways to grow more Heather: the usual steps for each method.

Semi-ripe cuttings Jul–Sep Takes a little care

You'll need: Clean, sharp secateurs, small pots, gritty compost, and rooting powder if you have it.

  1. Choose this year's shoots that are firm at the base but still soft at the tip, and cut pieces 10 to 15 cm long.
  2. Trim just below a leaf joint and take off the lower leaves; pinch out the soft tip.
  3. Dip the cut end in rooting powder if you have some.
  4. Push them into pots of gritty compost, water them in and cover with a clear bag.
  5. Keep them in a cold frame, greenhouse or bright windowsill out of direct sun.
How long
Roots in about 6 to 10 weeks.
It's worked when
New leaves, and the cutting resists when you tug it gently.
Then
Keep them somewhere cool and frost-free over winter, and pot them up separately in spring.
Layering Jul–Aug Easy

You'll need: A bent wire or tent peg (or a stone), and a small cane.

  1. Choose a low, bendy stem that reaches the ground.
  2. Where it touches the soil, scrape away a little bark on the underside, or make a small slanting cut.
  3. Peg that part down into the soil and cover it, leaving the tip sticking up; tie the tip to a cane.
  4. Keep it moist.
How long
Roots in 6 to 12 months.
It's worked when
New growth from the tip, and roots where it was pegged down.
Then
Once it has rooted, cut it free from the parent and plant it where you want it.
From seed Mar–May Easy

You'll need: Seed compost, a seed tray or small pots, labels, and a clear lid or plastic bag.

  1. Fill a tray or pots with seed compost, level it and firm it gently.
  2. Water the compost and let it drain.
  3. Sow the seeds thinly on top. Cover them with a fine layer of compost or vermiculite about as deep as the seed is big; leave tiny seeds uncovered.
  4. Label them, cover with a clear lid or bag, and keep them somewhere bright but out of hot sun.
  5. Keep the compost just moist, and take the cover off once seedlings appear.
How long
Usually comes up in 1 to 3 weeks.
It's worked when
Seedlings with their first pair of leaves.
Then
When each has its first true leaves, prick them out into their own small pots, holding them by a leaf, never the stem. Harden them off for a week or two before planting out.

Take short semi-ripe cuttings, or peg low stems into the soil to layer.

Garden Design

Works well in: Japanese / Zen, Prairie / Meadow, Wildlife-friendly

Drifts of heather give late-summer colour on acid, open sites and are superb for bees.

Companion planting: Ericas, Dwarf conifers, Grasses

Wildlife Value

  • Bees
  • Butterflies
  • Moths
  • Shelter
  • RHS Plants for Pollinators
  • Caterpillar food plant

Caterpillars it feeds: Emperor moth, Fox moth, Silver-studded blue