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American Snowdrop Tree, Two-wing Silverbell

Halesia diptera

Family: Styracaceae (sty-ra-KAY-see-ee) (Info)
Genus: Halesia (HAYLZ-ee-uh) (Info)
Species: diptera (DIP-ter-uh) (Info)



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Grow outdoors year-round


15-20 ft. (4.7-6 m)

20-30 ft. (6-9 m)


15-20 ft. (4.7-6 m)


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)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:

Full Sun

Sun to Partial Shade


Unknown - Tell us

Bloom Color:

Pale Pink

White/Near White

Bloom Time:

Mid Spring

Late Spring/Early Summer



Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:


Propagation Methods:

From herbaceous stem cuttings

From softwood cuttings

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; stratify if sowing indoors

From seed; sow indoors before last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


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

Little Rock, Arkansas

Jacksonville, Florida

Baton Rouge, Louisiana

Coushatta, Louisiana

Hosston, Louisiana

Arlington, Texas

Flint, Texas

Houston, Texas

show all

Gardeners' Notes:


On Jul 28, 2016, klinc1234 from Little Rock, AR (Zone 7b) wrote:

A few years ago I moved to a house with a lot of open space, and promptly bought a young Halesia diptera from a local native plant nursery to plant in my yard. You'll see different recommendations for where to plan different species of Halesia, and I think you probably can't go wrong with part shade; but mine is growing very well in full sun (zone 8).

One curious thing about it - is that for the past two years the new growth has flopped over during early spring rain storms - and the branches never completely right themselves. So my plant has a rather "floppy" habit. Right now it is a large mound (maybe 8 feet tall by 10 feet wide).

This spring was the first time it bloomed (~ 3-4 years old), and it is a beautiful and graceful looking tree in flower. Looking ... read more


On Apr 14, 2007, JaxFlaGardener from Jacksonville, FL (Zone 8b) wrote:

A nice specimen of this tree can be found in the "Wild Florida" area of the Jacksonville (Florida) Zoo and Gardens. The tree is breathtakingly beautiful when in full bloom! To my eye, it resembles a "Mock Orange" but with the petals inverted into a bell shaped flower.