Description
Quarantine Note: Due to quarantine restrictions, Allium bulbs cannot be sent to Tasmania.
Allium ‘Bridal Lace’ (Allium cowanii, family Amaryllidaceae)
Allium ‘Bridal Lace’ is a Mediterranean perennial admired for its delicate clusters of star-shaped white blooms that appear from spring to summer and last up to three weeks. Neat clumps of strappy foliage emerge first, followed by slender stems topped with airy umbels that add elegance, light fragrance, and movement to the garden. Ideal for borders, rock gardens, and raised beds, the flowers also make exquisite cut blooms. Low-maintenance and drought-tolerant once established, it attracts pollinators, deters pests such as rabbits and rodents, and thrives in sunny, well-drained soil across cool to subtropical climates.
Where to Plant
Best planted in mixed borders, rockeries, or raised beds where their airy blooms can stand out. Raised beds provide excellent drainage, helping bulbs stay healthy and perform reliably. They are slow multipliers, gradually forming tidy clumps that are suitable for long-term plantings. While they can be grown in containers for short-term displays, they perform best in the ground where bulbs have room to expand naturally. The flowers also last well when cut for indoor arrangements, adding elegance to bouquets and floral displays.
Companion Planting
Alliums naturalise gradually, forming neat clumps that suit both large and smaller spaces without overwhelming other plants. They pair beautifully with surrounding perennials and ornamental grasses, and good companions include tulips, daylilies, hostas, daffodils, and irises, which complement Alliums in both growth habit and seasonal display.
Climate Suitability
Alliums grow well across cool to subtropical climates. They thrive in sunny, well-drained positions and benefit from cold winters, which help the bulbs establish and set up for strong flowering in spring. 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. Alliums grow best when planted in cool soil and given time to develop roots before the heat of summer. In cooler regions, earlier planting is recommended so bulbs can establish before winter. In warmer areas, wait until after the summer heat has passed and the soil has cooled for the best results.
Location
Choose a spot in full sun with at least six hours of direct light daily. Raised beds, rock gardens, or well-drained borders are ideal, ensuring bulbs do not sit in waterlogged soil.
Soil
Alliums prefer light, free-draining soil with a near-neutral pH. Enrich the soil with compost or a small amount of well-aged manure before planting to encourage strong root and flower development.
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 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 healthy development. Avoid high-nitrogen fertilisers, which encourage excessive foliage over blooms.
Mulching
Apply mulch around the base of the plants to help retain soil moisture, suppress weeds, and regulate soil temperature. Organic mulches such as straw or sugarcane are ideal.
Maintenance
Remove spent flowers as they fade to prevent seed formation and maintain a tidy appearance. Keep the foliage in place and allow it to die back naturally, as this process enables the bulbs to store energy for the following year.
Division and Storage
Alliums can remain undisturbed for years but may be divided if clumps become overcrowded. Lift bulbs after flowering, allow them to dry in a cool, well-ventilated area for a few days, and replant in autumn. If storing, keep bulbs in a mesh bag or breathable container in a cool, dry, well-ventilated location out of direct sunlight until planting.
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 considered toxic to humans or pets, though ingestion may cause discomfort. 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.