Description
Quarantine Note: Due to quarantine restrictions, Allium bulbs cannot be sent to Tasmania.
Allium ‘Pink Delight’ (Allium unifolium, family Amaryllidaceae)
Allium ‘Pink Delight’, native to western North America, is a graceful perennial admired for its soft clusters of lavender-pink star-shaped blooms. Strap-like foliage emerges in early spring, forming a neat base before fading as slender stems and flowers rise to 20–50 cm tall. From late spring into early summer, airy umbels open into delicate florets that can last for weeks, creating a refined display in the garden or vase. Naturally drought-tolerant and low-maintenance once established, it is an easy and rewarding choice for gardeners. The long-lasting blooms attract bees and butterflies, while the plant’s natural ability to deter deer, rabbits, and rodents makes it a valuable addition to any planting scheme.
Where to Plant
Best planted in mixed borders, rockeries, or raised beds where their soft pink clusters can stand out. They look especially effective in clumps, naturalising gradually into tidy groups that suit both large and small spaces. Borders and rockeries are ideal for managing their slow multiplication, while raised beds provide excellent drainage and help keep growth neat.
Although they can be grown in containers for short-term displays, they perform best in the ground where bulbs have room to expand naturally. Their long-lasting blooms are perfect for mass planting to create impact, while also adding elegance to cut flower arrangements and supporting pollinators in the garden.
Companion Planting
Alliums naturalise gradually into neat clumps that blend well in both large and small gardens. They pair beautifully with perennials, ornamental grasses, and late-blooming tulips, as well as irises and daylilies, which complement their soft colouring and help disguise fading foliage.
Climate Suitability
Alliums grow well across cool to subtropical climates. It thrives in sunny, well-drained positions and benefits from cool winters, which help bulbs establish and prepare for strong flowering. In warmer regions, planting later in the season when the soil has cooled ensures good establishment.
When to Plant
Plant bulbs in autumn, from April to June. Earlier planting is recommended in cooler regions so bulbs can establish before winter. In warmer climates, wait until after the summer heat has passed and the soil has cooled for best results.
Location
Choose a spot in full sun with at least six hours of direct light daily. Borders, rock gardens, or raised beds are ideal, offering free-draining soil that prevents waterlogging.
Soil
Alliums prefer light, well-drained soil with a near-neutral pH. Enrich the soil with compost or a small amount of complete granular fertiliser or well-broken-down manure before planting.
How to Plant
Plant bulbs 8–10 cm deep. Space smaller bulbs about 10 cm apart, and larger bulbs 15–20 cm apart. Place the pointed end of the bulb facing upwards, backfill with soil, and water well to settle in.
Watering
Water deeply after planting to encourage root growth. During the flowering period, maintain even moisture but avoid overwatering. Once flowering has finished and foliage begins to die back, reduce watering to prevent bulb rot.
Fertilising
Apply a complete granular fertiliser at planting time and again as buds begin to form. Fertiliser can also be applied annually just before new growth emerges, using either a complete or a bulb fertiliser to support strong development. Avoid high-nitrogen fertilisers, which promote excessive foliage at the expense of flowers.
Mulching
Apply mulch around the base of the plants to conserve soil moisture, suppress weeds, and regulate temperature. Organic mulches such as straw or sugarcane are ideal.
Maintenance
Remove spent flowers to prevent seed formation and help bulbs store energy for the following season. Allow foliage to die back naturally, cutting it only once it has fully yellowed. Planting among other perennials helps disguise fading leaves and maintain an attractive display.
Division and Storage
Alliums are slow to multiply and can remain undisturbed for many years. If clumps become overcrowded, lift and separate the bulbs once both the foliage and blooms have fully died back. After lifting, bulbs can be replanted immediately or stored in a cool, dry, well-ventilated place out of direct sunlight, using breathable containers such as mesh bags. Replant before the end of the planting season in late autumn.
Pests and Diseases
Alliums are generally pest-resistant. Slugs and snails may occasionally damage young shoots. Deter them with barriers such as diatomaceous earth or organic traps. Ensure good drainage to reduce the risk of bulb rot.
Safety
Alliums are not listed as toxic to humans or pets, though, as members of the allium family, a degree of caution is sensible. Bulbs should be kept out of reach of children and animals, and gloves are recommended when handling, particularly for those with sensitive skin. Seek medical advice if accidental ingestion occurs.
Supplied as dormant bulbs.