Hyacinth

Sun

Full sun to partial shade; flowering is best with plenty of spring sunlight.

Water

Keep soil moderately moist during active growth, but never waterlogged. Keep relatively dry during summer dormancy.

Soil

Well-drained, moderately fertile soil; neutral to slightly alkaline conditions are ideal. Avoid heavy, persistently wet ground.

Height

0.5-1 ft (0.15-0.3 m)

Spread

0.25-0.5 ft (0.08-0.15 m)

Flowers

Early to mid-spring; fragrant spikes in blue, purple, pink, white, red, cream or yellow, depending on cultivar.

Foliage

Fleshy, strap-shaped green leaves emerge around flowering time and die back by summer.

Growth

Quick seasonal growth from established bulbs; clumps increase slowly by offsets.

Care needed

Low

• Plant in autumn with the bulb base about 6 in (15 cm) deep and bulbs 4-6 in (10-15 cm) apart; wear gloves when handling bulbs.
• Water after planting, then water during dry spells while leaves are growing. Let containers drain freely.
• Apply a balanced bulb fertilizer at the label rate as shoots emerge; avoid excessive nitrogen.
• Leave the foliage intact until it yellows naturally, and avoid routinely watering dormant bulbs in summer.
• In warm-winter areas, use pre-chilled bulbs or refrigerate bulbs for 10-12 weeks before planting, away from ripening fruit; repeat flowering may be unreliable.

Pruning. Cut off faded flower spikes before seed capsules develop, leaving the leaves untouched. Remove foliage only once it has turned yellow and withered; do not tie or braid it.

Autumn

Plant bulbs in well-drained soil or containers. Use local seasons: autumn planting in Australia is generally March-May.

Winter

Check that containers drain freely and move them out of persistent rain if the compost remains saturated.

Early spring

Apply bulb fertilizer as shoots appear and water if rainfall is insufficient.

Mid-spring

Remove spent flower spikes and support unusually heavy spikes with short, discreet stakes if needed.

Late spring

Allow leaves to yellow naturally before clearing them away.

Summer

Keep dormant bulbs relatively dry. Lift congested clumps after foliage dies, separate offsets and store dry and airy until autumn planting.

• Plant small groups beside paths or entrances to bring the fragrance within easy reach.
• Use repeated blocks in formal spring beds with tulips and low-growing violas.
• Grow in well-drained pots for seasonal displays on patios and steps.
• Thread through the front of deciduous borders, where emerging perennial foliage can conceal the dying leaves.

Garden styles it suits: Formal, English country, Cottage garden, Sensory garden, Traditional and Small-space.

Plant it with: Tulips, Daffodils, Forget-me-nots, Violas, Primroses and Hardy geraniums.

Wildlife: Flowers can provide nectar and pollen for early bees, although densely packed or double-flowered forms are less accessible.

• Bulb rot in wet soil: improve drainage, avoid overwatering and discard soft or foul-smelling bulbs.
• Slugs and snails damaging emerging leaves and flowers: inspect during damp evenings, remove pests and use an approved control if necessary.
• Heavy flower spikes flopping: grow in good spring light, avoid excessive feeding and support individual stems with short stakes.
• Poor flowering in later years: leave foliage until it dies naturally, feed during spring growth and check that bulbs receive enough winter chilling.

Toxic if eaten by people, cats, dogs and horses, with the greatest concentration in the bulbs. Ingestion can cause mouth irritation, drooling, vomiting and diarrhoea; eating bulbs or large amounts can cause serious illness. Bulb handling can also cause itchy skin irritation. Keep bulbs away from children and animals, wear gloves, and seek medical or veterinary advice after ingestion.

• Grape hyacinth (Muscari armeniacum)

  Has much smaller, bead-like flowers in compact clusters and narrower leaves; garden hyacinth has larger, open, six-lobed flowers.

• Spanish bluebell (Hyacinthoides hispanica)

  Bears separate hanging bells along a looser, taller stem rather than a dense spike of outward-facing, strongly scented flowers.

• Summer hyacinth (Ornithogalum candicans)

  Flowers in summer on much taller stems with loose clusters of hanging white bells, rather than short, dense spring spikes.

Hyacinthus comes from the Greek name associated with the mythological youth Hyacinthus, while orientalis means 'eastern'.

Propagation. Separate small offsets from dormant bulbs in summer and replant in autumn; they may take several years to flower. Seed propagation is slow, and seedlings do not reliably match named cultivars.

Accepted botanical name

Hyacinthus orientalis

In the US and Canada

Introduced in the lower 48 states.

Native range

Iraq, Lebanon-Syria, Palestine and Turkey.

Measured

Soil pH 7 to 7.5. Average height 29 cm.

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