In short
- Site: sun or partial shade, well-drained, slightly acidic to neutral soil.
- Blooms V–VII outdoors, in pots after preparation — any time of year.
- INTENSELY fragrant — one of the most perfumed garden flowers, fruity-citrus scent.
- In the UK and central Europe corms are lifted before winter (not frost-hardy, USDA 9+) and stored dry at 20–25°C.
- Cut-flower classic — 7–14 days in the vase; flowers open sequentially from the base of the arching stem.
Botanical data
- Family
- Iridaceae (Iridaceae)
- Height
- 0.3–0.5 m
- Width
- 0.1–0.15 m
- Habit
- Clump-forming
- Growth rate
- Fast
- Position
- Full sun, Partial shade
- Soil
- Humus-rich, Sandy
- pH reaction
- pH 6–7
- Moisture
- Moderate
- Bloom
- May–July
- Hardiness
- USDA 9a–10b
- Propagation
- From bulbs / tubers, From seed
Characteristics
A low (30–50 cm) bulbous perennial with a corm surrounded by a fibrous tunic. Narrow, sword-shaped leaves emerge from the base in a fan, growing up to 30 cm long. Flowers borne 6–12 in a one-sided, horizontally arching raceme on a stiff, slender stem — the characteristic feature of the genus. Individual flowers funnel-shaped, 4–6 cm across, with six petals reflexed outward; colour from snow-white through every shade of yellow, orange, pink, red to intense purple, and bicolour. They give off a VERY strong, pleasant citrus-fruit scent with rose undertones — one of the most perfumed of ornamental bulbs. After flowering the plants form seed capsules, but cultivars are propagated vegetatively from daughter corms.
Growing and care
Watering
Regularly during growth and flowering; after blooming, reduce watering to a minimum until leaves wither naturally. In dormancy (VIII–XII) store corms dry at 20–25°C.
Fertilizing
Half the dose on the label — freesias react badly to excess nitrogen (plants flop).
Planting
Light, well-drained soil enriched with compost. Outdoors, plant only after the last frost (V). For pots: peat and sand 3:1 or ready-made bulb substrate. Plant corms pointed end up.
Pruning
Cut off spent stems after full bloom drop, leave leaves to wither on their own.
Companion plants
Good companions
Freesias have narrow, upright leaves — ground-covering perennials fill the space between them without competing for light.
Bad companions
After flowering, freesias need a dry period to store reserves — proximity to perennials watered regularly in summer (hostas, astilbes) causes corm rot.
The evidence level indicates whether the relationship is backed by research, observation, or gardening tradition.
Toxicity
| For whom | Level | Notes |
|---|---|---|
| Humans | None | — |
| Dogs | None | — |
| Cats | None | — |
History and origin
The genus Freesia was described in 1866 by the German botanist Christian F. Ecklon, named in honour of his friend, the physician-botanist Friedrich H. T. Freese. The plants come from southern Africa, chiefly the Cape region. The first garden hybrids were raised in 1878 in England by George Wilson, crossing F. refracta with F. leichtlinii. Since the late 19th century the Netherlands has been the world centre of freesia breeding — still responsible for >90% of global corm and cut-flower production. Modern cultivars (several hundred registered) differ in colour, flower size and scent intensity.
Uses
Outdoor cultivation in beds and borders — corms are planted in May after the last frost, flowering VI–VII. In pots under glass, flowering time can be controlled — corms planted in January flower in April, those planted in July flower in October. A florist classic — industrial production supplies cut flowers year-round. Excellent for balcony and terrace in pots with good drainage; after flowering, corms are lifted and stored dry at 20–25°C until the next planting.
Trivia
- The name Freesia commemorates the German physician and botanist Friedrich Heinrich Theodor Freese (1795–1876) of Kiel, a friend of the genus's discoverer.
- Freesia is one of the most frequently used flowers in perfumery — its scent is synthesised for fragrance compositions because essential oil cannot be commercially extracted.
- The flowers open sequentially from the base of the arching stem — the lower ones fade as the upper ones begin to open; this gives exceptionally long bouquet life (up to 2 weeks).
- In Victorian floriography, freesia stood for trust and innocence — still a classic wedding flower today.
Frequently asked questions
Do freesias survive the UK/central-European winter outdoors?
No — freesias are not frost-hardy (USDA zone 9+, tolerate about −3°C minimum). Corms are lifted after leaves wither in autumn, cleaned of soil, dried for 2 weeks, and stored warm at 20–25°C (not cold — this destroys the flower buds). They are replanted in May.
Why aren't my freesias flowering?
Common causes: too low a temperature after planting (below 10°C halts growth); cold storage of the corms instead of warm (freesias need warm dormancy, otherwise flower buds don't initiate); excess nitrogen; too shallow planting. Optimal: corms 5 cm deep, growing temperature 15–20°C, moderate feeding with phosphorus and potassium.
How to time freesia flowering in a pot for a specific month?
From planting to flowering takes 90–120 days at 15–20°C. For Easter flowers plant corms in January; for early November, in early August. In the first 6 weeks the substrate should be only lightly moist, then watered regularly. Higher temperatures (>25°C) shorten the time to flowering but also shorten flower life.
Sources
- Plants of the World Online (POWO) — FreesiaDatabase (GBIF, POWO…)
- RHS — Freesia growing guideInstitution / botanical garden
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