Bulb · Iridaceae
Freesia
Freesia refracta
Arching sprays of intensely fragrant winter blooms, opening one flower at a time.
Full sun
Every 3–7 days
61–70°F · 16–21°C
70–84 days
Overview
Freesia (Freesia refracta) belongs to the Iridaceae family and grows from a corm rather than a true bulb. It is a tender, frost-sensitive plant native to South Africa, valued above all for a fragrance that carries well beyond the flower itself. The blooms line up along one side of a wiry, arching stem and open in sequence, so a single spray keeps color and scent going for days.
This is a cool-season grower that flowers from winter into early spring, about 10 to 12 weeks after the corms go in. In USDA zones 9 and 10 the corms can stay outdoors and return year after year, because winters there never dip low enough to kill them. Anywhere colder, grow freesia in pots and lift the corms indoors before frost, since a hard freeze destroys the corm outright.
You will find freesia in white, gold, blue, and red, with the white forms carrying the sweetest scent. Success comes down to a few conditions: full sun with some tolerance for partial shade, a fast-draining medium, and measured watering. Standing moisture is the single fault it will not forgive, so drainage is the thing to get right first.
Care
The short version: give freesia full sun and a fast-draining mix, water steadily but sparingly through active growth, then ease off as the foliage yellows and the corms settle into dormancy.
Light
Full sun is the target, though freesia handles partial shade without much complaint. The reason to favor bright light is structural: stems grown in too much shade turn weak and floppy and set fewer flowers, because the plant cannot fund sturdy growth on limited light. Give it the sun it wants and the arching stems stay firm enough to hold the spray upright.
Water
Keep the medium evenly moist while the plant is in active growth, watering roughly every 3 to 7 days, but never let the corm sit in standing water. Excess moisture starves the corm of oxygen and drives the rot that ends the plant fastest. As the foliage begins to yellow, cut watering back sharply and let it slide into dormancy, since the corm no longer needs the water it drew during growth.
Soil
Use an organic-rich, well-drained potting mix cut with coarse sand or crushed rock, aiming for a pH of 6.0 to 8.0. Freesia is fussy about drainage for a simple reason: standing water around the corm feeds the rot that kills it, and the sand or crushed rock keeps water moving through instead of pooling. Build the drainage into the mix from the start and you remove the main cause of failure.
Temperature
This is a cool-season plant that performs best between 61°F and 70°F (16°C to 21°C). Warm weather is the limiting factor: heat pushes the plant to finish flowering early, so a hot spell cuts the bloom short. Hold it in that cooler band and the spray lasts as long as the plant can manage.
Humidity
Ordinary household or garden humidity suits freesia fine, and there is no figure to chase. Air movement matters more than moisture in the air, because stagnant conditions around the foliage invite both pests and rot. Keep the air circulating and you head off two problems at once.
Feeding
Feed once a month through active growth and flowering with a balanced or low-nitrogen liquid fertilizer. The nitrogen level is the point to watch: a heavy dose pushes leafy growth at the expense of flowers, so you end up with foliage where you wanted a spray. Keep the feed modest and the plant spends its energy on blooms.
Pruning
There is no real pruning to do here. Deadhead spent flowers as they fade, and otherwise leave the plant alone. Let the foliage die back on its own before you lift and store the corms, because those fading leaves are still feeding energy down into the corm for next year's bloom.
Repotting
Freesia is replanted rather than repotted. Each season starts fresh, from new or stored corms, rather than from a plant you keep going in the same pot. Lift and divide when the corms grow crowded, since a tight clump gives fewer and smaller blooms or simply outgrows its container.
Size & spacing
Expect stems of 12 to 24 inches (30 to 60 cm) tall with a spread of 6 to 12 inches (15 to 30 cm). Set the corms about 1 to 2 inches apart, close enough for a full spray but with room for each to develop.
When to plant
Freesia runs on a cool-season clock. Set corms into the ground from late summer through early winter, let them build roots and foliage across the cool months, and expect fragrant flowers from winter into early spring, roughly 10 to 12 weeks after planting.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Plant corms in pots in late summer through early winter (succession planting extends bloom)
- Plant: In zones 9-10, plant corms in fall; elsewhere grow in containers and overwinter corms indoors
- Harvest: Winter to early spring, about 10-12 weeks after planting
Hardiness
USDA hardiness zones: 9–10
Temperature: down to -7°C
Troubleshooting
Nearly every problem with this plant traces back to moisture and a short list of familiar pests. Read the corms and leaves early, because the sooner you spot the first signs, the more easily you stop damage before it spreads.
Corms turning soft, brown, and mushy
When the corms go soft and brown and the plant collapses, you are almost certainly looking at corm rot. The usual driver is overwatering or poorly drained soil; less often, fusarium wilt or root-rot pathogens are behind it. Confirm by lifting a corm and checking for soft, mushy tissue in waterlogged soil. Stop overwatering, improve drainage, discard any rotted corms, and replant healthy ones in a fresh, well-drained, organic-rich mix. Prevent it with a fast-draining medium built from coarse sand or crushed rock and a lighter hand on the watering. This one is severe and can take the whole planting.
Fix:
- Stop overwatering and improve drainage
- Discard rotted corms
- Replant healthy corms in fresh, well-drained organic-rich mix
Twisted new growth and sticky leaves
Distorted, twisted new growth along with sticky, shiny leaves and small insects points to aphids or thrips feeding on the plant. Confirm by inspecting the new growth and the undersides of leaves for clusters of insects or the slimmer thrips. Rinse them off with a strong jet of water, and step up to insecticidal soap if they persist. Regular inspection and good air circulation keep the population from taking hold. It is a setback rather than a disaster and is readily managed once caught.
Fix:
- Rinse off insects with water
- Treat with insecticidal soap if infestation persists
Chewed leaves with silvery slime trails
Irregular holes chewed through leaves and flowers, paired with silvery slime trails that show up after watering or rain, are the mark of slugs and snails. Confirm the diagnosis by matching the ragged holes to those slime trails, which most often appear after moisture. Hand-pick them in the evening when they are active, and back that up with bait or physical barriers. Keep conditions from staying overly wet and clear away debris that gives them cover during the day. The damage is cosmetic and the plant recovers.
Fix:
- Hand-pick slugs and snails
- Use bait or barriers around plants
Toxicity
For a household with animals, freesia is a low-worry choice. The ASPCA groups it with the non-toxic bouquet flowers, and there is no record of genuine poisoning in pets or livestock. A pet that chews a stem may show brief mild stomach upset and little else.
Safe for
People · Cats · Dogs · Horses · Rabbits · Livestock · Birds
Cats None
Safe for cats, with nothing toxic in the leaves, flowers, or corms; at most, a nibble brings a brief, mild stomach upset, the same as any off-diet plant.
Dogs None
No poisoning risk for dogs; the worst you might see is a little drooling or a loose stool after it eats something it should have left alone.
Horses Safe
No known toxins trouble horses; a mouthful of foliage passes through with at most a passing digestive grumble.
Rabbits Safe
Rabbits are not at risk, since nothing in the plant is poisonous; only a sudden large helping of any new green might loosen the gut, so introduce it slowly.
Livestock Safe
Cattle, goats, and sheep take no poisoning from grazing the foliage; as with any animal, unfamiliar plant material can cause a mild, short-lived upset.
Birds Safe
No toxic threat to pet or backyard birds, and nothing about the plant warrants keeping a bird away from it.
People Safe
Not poisonous to people, which is exactly why it turns up so often in cut bouquets; it is not grown to be eaten and there is no reason to taste it, but a stray bit does no harm.
Non-toxic, but ingestion of plant material that is not part of a pet's normal diet may cause mild stomach upset.
Varieties
The color range here is broad, running from white through gold, blue, and red. A handful of named cultivars turn up more often than the rest.
Royal Blue
Royal Blue is a blue-flowered cultivar, an uncommon shade among the warmer tones freesia usually wears.
Golden Passion
Golden Passion runs from gold to yellow and is grown above all for its strong, sweet fragrance.
White River
White River is a white-flowered cultivar, and white forms are reported to carry the richest scent of the lot.
Red Lion
Red Lion is a red-flowered cultivar that brings the boldest color to a freesia planting.
How to propagate
Multiplying freesia takes little effort: split the corms you already have, or simply open a fresh bag and start over.
Offsets & pupsEasy
Lift and separate offset cormels when foliage yellows and the plant goes dormant · Replant and bloom the following season (about 10-12 weeks after replanting)
Dividing corms and their offsets is the easiest and most reliable route. Wait until the foliage yellows and the plant goes dormant, then lift the clump and pull apart the small cormels that have formed around the parent. Replant them in the next cycle and they bloom about 10 to 12 weeks later.
Bulbs & cormsEasy
Plant corms in late summer through early winter for winter to early spring bloom · Flowers normally appear 10-12 weeks after planting
Starting from bought corms is every bit as straightforward. Plant them 1 to 2 inches deep and 1 to 2 inches apart, pointed end up, in a well-drained mix, anytime from late summer through early winter. Flowers follow about 10 to 12 weeks later, from winter into early spring.
SeedModerate
Sow seed in the growing season · Seed-grown plants take 1-2 years to reach flowering size
Growing from seed works but tests your patience. Sow during the growing season and expect the plants to need 1 to 2 years to reach flowering size. Because it is so much slower than division, few home gardeners take this path.
Myths
Freesia corms can be left in the ground all year in any climate.
Freesia is frost-tender and hardy only in USDA zones 9 to 10, so this holds only in mild regions. In colder areas you have to lift and store the corms, or grow them in containers and overwinter them indoors. Leave them out where winters bite and a hard freeze finishes them. Match the corm to your climate before trusting it to the ground.
Freesia is poisonous to cats and dogs.
The ASPCA lists freesia among its non-toxic bouquet flowers, and it is not reported as harmful to pets. A curious nibble might bring mild stomach upset, the same reaction most plants outside an animal's usual diet would cause, which is not true poisoning. Treat it as a safe flower to have around animals.