Bulb · Amaryllidaceae
Common Snowdrop
Galanthus nivalis
Set the bulbs in fall and Galanthus nivalis rises through the last of the winter snow, flowering ahead of the season.
Partial shade
Every 7–14 days
32–64°F · 0–18°C
USDA 3–7
Overview
Snowdrops rank among the first flowers of the year in most temperate gardens, opening nodding white bells in late winter while the soil is still cold. They arise from small bulbs, return unaided each spring, and spread by degrees into drifts beneath trees and along paths. Left undisturbed for a few years, a colony knits into a sheet of white before the rest of the garden breaks dormancy.
A member of the amaryllis family, the species performs best in the cool, moist half-shade cast by deciduous trees, since it completes its cycle before the canopy closes. It proves short-lived where summers turn hot, a limit tied directly to heat, so it favors cold-winter gardens over warm ones. Once matched to a suitable site, it needs almost no intervention.
One caveat governs where it belongs. Every part of the plant is toxic, the bulb most concentrated of all. The species is both handsome and durable, but it warrants a position out of reach of pets or small children inclined to dig and eat the bulbs.
Care
The short version: plant the bulbs in fall beneath deciduous trees in cool part shade, hold the soil moist and humus-rich through spring growth, then leave the colony undisturbed to naturalize.
Light
The species favors partial shade, and the dappled light beneath deciduous trees suits it because flowering finishes before the canopy leafs out and casts full shade. It also accepts full sun, provided the soil stays cool and moist throughout spring growth.
Water
Hold the soil evenly moist during active spring growth, leaning moist in humus-rich ground yet never waterlogged, since the roots are working hardest then. After the foliage dies back for summer the bulb enters dormancy and requires little to no water until it breaks again.
Soil
Average, well-drained ground is workable, but the species performs best in moist, humus-rich loam and tolerates clay. Incorporate ample organic matter, which raises the soil's capacity to retain spring moisture without becoming waterlogged.
Temperature
This is a cold-climate plant, comfortable between roughly 32°F and 64°F (0°C to 18°C). It flowers in late winter and is intolerant of genuine summer heat, the physiological reason it grows short-lived in warm regions.
Humidity
Ambient outdoor humidity meets the plant's needs, so no target figure applies. Soil moisture and coolness matter far more to the species than atmospheric humidity.
Feeding
Feed sparingly in early spring as shoots emerge, or immediately after flowering. A balanced bulb fertilizer or a light topdressing of compost once per season supplies enough for this low-demand plant.
Pruning
No pruning is warranted. Allow the foliage to die back naturally after flowering, because the leaves are recharging the bulb during that period, and remove them only once fully withered.
Repotting
Lifting is seldom required. Divide congested clumps every few years, in the green just after flowering, once bloom production falls off or crowding reduces vigor.
Size & spacing
A diminutive plant, reaching only 4 to 10 inches (10 to 25 cm) in height with a spread of 3 to 6 inches (8 to 15 cm). Set the bulbs about 2 to 3 inches apart at the same depth and allow the colony to close in over time.
When to plant
The species runs on a winter cycle. Dry bulbs go in during fall as the soil cools, rest through the cold months, and then emerge to flower in late winter, frequently through snow, before dying back into summer dormancy.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Plant: Plant dry bulbs in fall when soil has cooled and night temperatures are about 40 to 50 degrees F, 2-3 inches deep and 2-3 inches apart.
- Harvest: Blooms late winter to early spring (February to March), often through snow.
Hardiness
USDA hardiness zones: 3–7
Temperature: down to -40°C
Troubleshooting
Snowdrops present few problems, and those that arise localize either in the bulb or manifest as a gradual decline of the whole clump. Compare the two signs below against the planting and intervene while recovery remains possible.
Foliage wilts and the bulbs turn soft and hollow
The narcissus bulb fly is responsible, its larvae boring in and consuming the bulb from within. Lift a declining plant and inspect for a fat cream-colored maggot occupying the hollowed core. Excavate and destroy every infested bulb to break the cycle, and relocate the planting rather than replanting the same ground.
Fix:
- Dig and destroy infested bulbs to stop the larvae spreading
- Avoid replanting susceptible bulbs in the same spot
Colonies weaken and flower less from year to year
Excess heat is the primary driver, as the species grows short-lived once sited south of zone 7, and dry or poorly drained ground compounds the decline. Relocate the planting to cool part shade beneath deciduous trees and amend with organic matter so the soil retains spring moisture.
Fix:
- Site in cool, part-shade spots such as under deciduous trees
- Improve soil with organic matter to retain spring moisture
Toxicity
The species is toxic and should be handled accordingly. Every part contains the alkaloids lycorine and galantamine, with the bulb holding the highest concentration. Ingestion induces drooling, vomiting, and diarrhea, and a large dose, particularly of a bulb, can progress to tremors and cardiac disturbance. No part is edible, so keep the bulbs well away from pets, livestock, and children.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Toxic
A cat that browses the foliage typically drools and vomits within a few hours. The bulb poses the greater hazard, and a cat that unearths and consumes one may proceed to tremors and an irregular heartbeat.
Dogs Toxic
Dogs are the animals most prone to excavating and chewing a bulb, which triggers profuse drooling, vomiting, and diarrhea. A substantial mouthful can advance to trembling and a rapid or irregular pulse.
Horses Toxic
The same alkaloids affect horses markedly. Grazing the leaves or bulbs produces drooling, colicky abdominal pain, and loose manure, and a large dose can leave a horse weak and trembling.
Rabbits Toxic
Rabbits should be given no part of a snowdrop. Even a small quantity of leaf or bulb disturbs the gut and can leave a rabbit drooling, off its feed, and lethargic.
Livestock Toxic
Cattle, sheep, and goats that access a stand of snowdrops may drool, scour, and refuse feed. Heavier grazing risks tremors and cardiac instability, so exclude the bulbs from pasture with fencing.
Birds Toxic
Poultry and other birds are likewise unsafe around snowdrops. The lycorine present throughout can leave a bird subdued, off feed, and regurgitating its crop, with the bulb producing the severest effects.
People Caution
No part of the plant is edible. Children occasionally mistake the bulbs for onions, and ingestion brings drooling, vomiting, and diarrhea, so store the bulbs out of reach and wash the hands after planting.
Wear gloves when handling bulbs to avoid skin irritation, and keep bulbs away from pets and children.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
Garden plantings are dominated by the common species, though several named forms and one larger relative merit attention.
Flore Pleno
A double-flowered selection in which supplementary inner tepals fill the bloom into a denser, ruffled white skirt.
Viridi-apice
This form bears green tips on the outer tepals in addition to the standard inner green markings, rendering the flower distinctly greener overall.
Galanthus elwesii (giant snowdrop)
A larger relative that exceeds the common snowdrop in stature, with bigger flowers and broad gray-green foliage.
Companions
Snowdrops naturalize best alongside other early bulbs that wake at the same time and share the same cool, woodland ground.
Plant near
Winter aconite (Eranthis hyemalis): Blooms at the same early-spring time for a complementary naturalized display.
Siberian squill (Scilla siberica): Another early bulb that naturalizes well alongside snowdrops under deciduous trees.
Glory-of-the-snow (Chionodoxa): Early-blooming companion bulb suited to the same woodland and lawn settings.
How to propagate
Snowdrops increase readily, and a congested clump effectively asks to be split. Divide the bulbs, separate their offset bulblets, or let seed sow itself.
DivisionEasy
Just after flowering while foliage is still green (in the green) · Re-establishes the same season; clumps build up over a few years.
Division is the most dependable method of increase. Lift a congested clump directly after flowering while the foliage remains green, separate it into smaller groups, and replant immediately before the bulbs desiccate. The divisions re-establish within the same season and consolidate into full clumps across a few years.
Offsets & pupsEasy
Lift with clumps after flowering · A few years to form large colonies
Each bulb generates small offset bulblets at its base. Lift these with the clump after flowering, detach the bulblets, and grow them on, whereupon they infill over a few years to form large colonies.
SeedModerate
Self-sows in fall after natural ripening · About 4 years to reach flowering size
Where conditions suit, the species also self-sows, shedding seed in fall after natural ripening to colonize new ground. The route is slow, however, since a seedling requires about 4 years to attain flowering size.
Myths
Snowdrops must be harmless given their status as dainty early flowers.
The delicate appearance masks genuine toxicity. Every part contains lycorine and galantamine, and the bulbs specifically induce vomiting and diarrhea on ingestion. Regard the entire plant, and the bulbs above all, as poisonous to pets and people alike.