Summer Snowflake, Snowbell, Dewdrop 'Gravetye Giant'

Leucojum aestivum

Family: Amaryllidaceae (am-uh-ril-id-AY-see-ee) (Info)
Genus: Leucojum (LOO-koh-jum) (Info)
Species: aestivum (EE-stiv-um) (Info)
Cultivar: Gravetye Giant




Foliage Color:


Bloom Characteristics:

Flowers are good for cutting

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us


12-18 in. (30-45 cm)

18-24 in. (45-60 cm)


6-9 in. (15-22 cm)

9-12 in. (22-30 cm)

12-15 in. (30-38 cm)

15-18 in. (38-45 cm)


USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Sun to Partial Shade


All parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Late Spring/Early Summer




This plant is resistant to deer

Other details:

Unknown - Tell us

Soil pH requirements:

Unknown - Tell us

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Unknown - Tell us


This plant has been said to grow in the following regions:

San Diego, California

Clifton, Colorado

Divernon, Illinois

Shawnee Mission, Kansas

Brunswick, Maine

Gaithersburg, Maryland

Roslindale, Massachusetts

Salem, Massachusetts

Brighton, Michigan

Dunn, North Carolina

Raleigh, North Carolina

Norristown, Pennsylvania

Conway, South Carolina

Germantown, Tennessee

Austin, Texas

Clarksville, Texas

Mont Belvieu, Texas

Richmond, Texas

San Antonio, Texas

Vancouver, Washington

Great Cacapon, West Virginia

show all

Gardeners' Notes:


On Apr 24, 2015, vossner from Richmond, TX (Zone 9a) wrote:

Great naturalizer in my z9a garden. I have planted them in moist areas and in dryish areas and don't see diff. in performance. Some are in shade, some in full brutal sun, no diff.


On Apr 1, 2014, coriaceous from ROSLINDALE, MA wrote:

This is a particularly robust form of the species, first found at Gravetye Manor, garden of the 19th century English horticultural giant, William Robinson.

It is larger, taller, and more vigorous than the species, and with larger flowers.

I've read that almost all Leucojum aestivum in commercial production is actually this form, even if not so labeled.

Like the species, it blooms in mid-late daffodil season, in April here in Boston (Z6a). In the deep south, it may begin blooming in early winter.

Easy and adaptable, it prefers more moisture than most spring bulbs, and tolerates summer irrigation. Summer snowflakes perform well in moist areas like the edges of streams and ponds. They also tolerate deciduous shade.

Eas... read more


On May 14, 2010, chuckmemphis from Germantown, TN wrote:

Here in TN these freely self seed and can create an astonishing clump in just a few years. From my initial planting of 3 bulbs 5 years ago, I now have about 12 clumps that usually put up 50-75 stalks in Late March, Early April.
Easy to divide and share, all grow true from seed, if pods are left on plants.


On May 12, 2009, robcorreia from San Diego, CA (Zone 10b) wrote:

These plants come back every year for me here in San Diego, zone 10. They bloom throughout the winter. In warm weather they "die down". I tie-up the leaves in a neat knot and only cut them off when they are totally yellow. They kind of "disappear" during the season, and start leafing out again in late fall.
Lovely and a prolific bloomer!


On Jan 30, 2005, pokerboy from Canberra,
Australia (Zone 8b) wrote:

This snowflake bears up to eight white, green tipped bells anytime from early Spring to late Spring. Another spectacular bulb. pokerboy.