Giant snowdrop

Sun

Full sun to partial shade during winter and early spring; summer shade beneath deciduous trees is suitable.

Water

Keep soil moderately moist while leaves and flowers are growing. Once dormant, bulbs tolerate drier soil but should not sit in waterlogged ground.

Soil

Humus-rich, well-drained soil that retains some moisture; neutral to alkaline soil is ideal, though mildly acidic soil is usually tolerated.

Height

0.5-1 ft (0.15-0.3 m)

Spread

0.25-0.5 ft (0.08-0.15 m) per clump initially; colonies gradually spread farther.

Flowers

Late winter to early spring, sometimes earlier in mild climates; nodding white flowers with green markings on the shorter inner petals.

Foliage

Broad, strap-shaped, blue-grey leaves emerge with the flowers and die back in late spring or early summer.

Growth

Moderate seasonal growth; clumps increase slowly to moderately over several years.

Care needed

Low

• Pollinators
• Deer resistant
• Cold hardy
• Low allergen

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Easy

Toughness

Very tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   0.5 ft (0.15 m)

2. After 1 year

   0.7 ft (0.21 m)

3. After 2 years

   0.7 ft (0.22 m)

   full size

About 1 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Toxic

Growth rate

Slow

• Plant fresh bulbs in early autumn, about 3-4 in (8-10 cm) deep and 3 in (8 cm) apart; do not let unplanted bulbs dry out.
• Water during dry spells while the leaves are green, especially in the first growing season.
• Apply a thin layer of leaf mould or garden compost in autumn without burying emerging shoots.
• In poor soil, apply a light dressing of balanced fertiliser after flowering; rich soil needs little additional feeding.
• Divide crowded clumps after flowering while leaves are still green, and replant immediately at the same depth.

Pruning. Remove spent flower stems if you do not want seedlings. Leave all foliage until it has yellowed naturally, then remove it or allow it to decay.

Early autumn

Plant fresh bulbs promptly in well-drained soil beneath deciduous trees or shrubs.

Late autumn

Add a thin mulch of leaf mould and check that the planting area drains freely.

Winter

Watch emerging shoots for slug damage and protect flowers from trampling.

Late winter to early spring

Enjoy the flowers and water if the soil becomes dry during active growth.

Spring

Divide congested clumps after flowering and replant immediately; keep all leaves attached.

Late spring to summer

Let leaves yellow completely before clearing them; avoid digging through the dormant bulbs.

• Plant in loose drifts beneath deciduous trees, where winter light reaches the flowers before the canopy develops.
• Edge a frequently used path so the small flowers can be seen closely in winter.
• Combine with winter aconites, early crocuses and hellebores for a long sequence of early flowers.
• Plant among deciduous ferns or hostas, whose later foliage covers the space left by dormant bulbs.

Garden styles it suits: Woodland, Cottage garden, English country, Winter interest, White garden and Low-maintenance.

Plant it with: Winter aconite, Early crocus, Lenten rose, Cyclamen coum, Hosta and Deciduous ferns.

Wildlife: Flowers provide pollen and nectar for bees active during mild winter and early-spring weather. Ants may carry away seeds and help disperse them. Deer and rabbits usually leave the plants alone, though no planting is completely browsing-proof.

• Bulbs rot in waterlogged soil: improve drainage or move them to a raised planting area rather than adding more water.
• Slugs and snails damage emerging leaves and flowers: hand-pick them or use an approved iron-phosphate bait according to its label.
• Narcissus bulb fly larvae hollow out bulbs: remove affected bulbs and firm the soil after foliage dies back to close gaps around bulbs.
• Few or no flowers can result from overcrowding, deep shade during growth or cutting leaves too early: divide dense clumps, improve winter light and let foliage die naturally.

Toxic to people, cats, dogs and horses if eaten. All parts contain poisonous alkaloids, with the bulbs particularly hazardous; ingestion can cause vomiting, diarrhoea and abdominal pain, and larger amounts may cause serious poisoning. Sap can irritate skin, so wear gloves when dividing bulbs.

• Common snowdrop (Galanthus nivalis)

  Usually has much narrower leaves that emerge flat against one another. Giant snowdrop has broader, blue-grey leaves, with one leaf wrapping around the other at the base.

• Pleated snowdrop (Galanthus plicatus)

  Its broad leaves have distinctly folded-back margins. Giant snowdrop lacks these pleated edges.

• Spring snowflake (Leucojum vernum)

  Its flowers have six roughly equal-length segments, each tipped with green or yellow. Giant snowdrop has three long outer segments and three much shorter, green-marked inner ones.

Galanthus comes from Greek words meaning 'milk flower', while elwesii honours the British botanist and plant collector Henry John Elwes.

Propagation. Divide established clumps after flowering while the leaves are still green, keeping roots moist and replanting immediately. Alternatively, sow fresh ripe seed promptly; seedlings usually take several years to flower and may vary from the parent. Buy nursery-propagated bulbs rather than wild-collected plants.

Accepted botanical name

Galanthus elwesii

In the US and Canada

Introduced in the lower 48 states.

Native range

Albania, Bulgaria, East Aegean Is., Greece, Turkey, Ukraine and Yugoslavia.

Measured

Average height 27 cm.

Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.