Himalayan honeysuckle

Sun

Full sun to partial shade; afternoon shade helps in hot climates.

Water

Keep the soil evenly moist while establishing. Once established, water during prolonged dry spells, especially in sunny sites.

Soil

Moist but well-drained soil, including clay improved for drainage; tolerates acidic, neutral and alkaline conditions.

Height

4-8 ft (1.2-2.4 m)

Spread

4-8 ft (1.2-2.4 m)

Flowers

Summer to autumn; small white tubular flowers hang beneath persistent burgundy-purple bracts.

Foliage

Large, pointed, heart-shaped green leaves on green, hollow stems; leaves usually fall in autumn.

Growth

Fast

Care needed

Low

• Pollinators
• Wildlife
• Low allergen

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Easy

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1.6 ft (0.5 m)

2. After 1 year

   3 ft (0.9 m)

3. After 2 years

   4 ft (1.3 m)

4. After 3 years

   6 ft (1.7 m)

5. After 5 years

   6 ft (1.8 m)

   full size

About 3 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Safe

Invasive in

Australia

In the garden

Spreads vigorously: plan to contain it.

Growth rate

Fast

• Water deeply through the first growing season whenever the root zone begins to dry.
• Apply compost and a mulch layer in spring, keeping mulch clear of the stems.
• Feed lightly in spring only if growth is weak; rich soil usually needs no additional fertiliser.
• Choose a position sheltered from strong winds, which can break the soft stems.
• Remove spent clusters before berries ripen where self-seeding is a concern, and pull seedlings promptly.

Pruning. In late winter or early spring, remove dead or frost-damaged stems and cut out some of the oldest stems at ground level. For a compact shrub, cut all stems back to 6-12 in (15-30 cm); flowers develop on the new growth.

Early spring

Prune before vigorous new growth begins, removing winter damage or cutting back hard to control size.

Spring

Plant when the soil is workable, water thoroughly and mulch around the root zone.

Early summer

Check newly planted shrubs regularly and water during dry weather.

Summer

Remove fading flower clusters before fruit develops if seedlings or bird-dispersed spread would be a problem.

Autumn

Pull unwanted seedlings and check nearby beds for plants established from dropped or bird-carried seed.

Late autumn

Refresh mulch in colder gardens to protect the root zone, without covering the stem bases.

• Place toward the back of a mixed border, where its arching stems rise above lower perennials.
• Use at a lightly shaded woodland edge with ferns and hostas for contrasting leaf shapes.
• Plant beside a path or seating area where the hanging flowers and coloured bracts can be seen close up.
• Include in an informal shrub border with hydrangeas and hardy fuchsias for a long late-season display, where invasive status permits.

Garden styles it suits: Cottage garden, Woodland, English country, Romantic rose garden, Wildlife garden and Pacific Northwest woodland.

Plant it with: Hardy fuchsia, Hydrangea, Hosta, Japanese anemone, Soft shield fern and Hardy geranium.

Wildlife: Flowers attract bees and other pollinating insects. Birds eat the berries and disperse the seeds, which contributes to its spread outside gardens.

• Frost-damaged stems: wait until early spring, then cut back to live wood; established plants often regrow strongly from the base.
• Wilting or scorched leaves in dry heat: water deeply, mulch and provide afternoon shade in hot gardens.
• Poor growth or root rot in waterlogged soil: improve drainage or move the shrub to a better-drained position.
• Unwanted seedlings: remove fruiting clusters before ripening and pull seedlings while small.

Not known to be toxic to people, cats, dogs or horses; no specific poisonous part is established. Animal safety information is limited, so discourage pets and livestock from eating it. The berries are sometimes described as edible, but this shrub is normally grown as an ornamental.

Where it spreads. Invasive in New Zealand and parts of southeastern Australia, notably Victoria and Tasmania. It also escapes cultivation in the United Kingdom and parts of the Pacific Northwest of North America. Birds spread its seeds into woodland and disturbed ground; check local invasive-plant guidance before planting.

• Hardy fuchsia (Fuchsia magellanica)

  Both have hanging flowers, but hardy fuchsia has conspicuous red or pink sepals, usually purple petals and long projecting stamens. Himalayan honeysuckle has small white flowers tucked beneath broad burgundy bracts.

• Twinberry honeysuckle (Lonicera involucrata)

  Twinberry bears paired yellow tubular flowers followed by paired black berries framed by reddish bracts. Himalayan honeysuckle carries its flowers and berries in longer, hanging clusters.

Leycesteria honours William Leycester, a British judge and horticultural patron in Bengal, while formosa means beautiful and Himalayan refers to the plant's native region.

Propagation. Take softwood cuttings in late spring or early summer, or hardwood cuttings during dormancy. It also grows readily from seed, but avoid seed propagation where escape is a concern.

Accepted botanical name

Leycesteria formosa

In the US and Canada

Introduced in the lower 48 states.

Native range

Assam, China South-Central, East Himalaya, Myanmar, Nepal, Pakistan, Tibet and West Himalaya.

Measured

Average height 250 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.