How to grow freesia
Overview
Freesia is a fragrant, spring-flowering corm from South Africa, prized for its arching stems of trumpet-shaped blooms. It requires a dry summer dormancy and a cool, moist autumn to winter growth period to flower reliably.
Varieties
- Freesia refracta — The classic species with highly fragrant, single flowers in white, cream, or pale yellow.
- Freesia 'Golden Wave' — A popular hybrid with large, golden-yellow blooms and strong fragrance.
- Freesia 'Blue Heaven' — Violet-blue flowers with a sweet scent; excellent for cut flowers.
Soil Preparation
Freesia thrives in slightly acidic to neutral soil (pH 6.0-7.0) with excellent drainage. Amend heavy clay with coarse sand or compost. A raised bed or sandy loam is ideal; avoid water-retaining soils.
Growing Guide
Plant freesia corms 5-8 cm deep and 5-8 cm apart in autumn, in full sun and free-draining soil. In cool and temperate zones, plant from March to May; in subtropical areas, delay until April. Water sparingly after planting until shoots appear, then keep evenly moist during growth. After flowering, allow foliage to yellow and dry completely before lifting corms for storage.
Care
Apply a low-nitrogen, balanced fertiliser (like 5-10-10) at planting and again when flower spikes appear. Remove spent flower stems to prevent seed formation, but leave foliage to die back naturally. After foliage withers, lift corms, dry in shade for a week, and store in a cool, dry place.
Companion Planting
Plant freesia with early spring bulbs like daffodils, grape hyacinths, and anemones for a colourful display. Avoid heavy feeders or plants that require summer water near freesia, as dry dormancy is essential for corm health.
Common Pests & Risks
Aphids may cluster on new growth and flower buds; spray with a soap solution or neem oil. Bulb rot occurs in waterlogged or heavy clay soils; improve drainage or plant in raised beds. Thrips can cause silvery flecks on leaves; control with insecticidal soap.
Harvesting
Cut flowers when first blooms open.
Troubleshooting
Corms fail to flower: planted too shallow or too deep; plant 5-8 cm deep. Leaves yellow before flowering: overwatering or poor drainage; reduce water and improve soil. Flowers flop: lack of support; stake with thin canes or plant in groups for mutual support. Corms rot in storage: not fully dried; dry for a week before storing. No blooms after first year: corms need a dry summer rest; lift and store.