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Japanese Morning Glory 'Akatsuki no Tsuyu'

Ipomoea nil

Family: Convolvulaceae (kon-volv-yoo-LAY-see-ee) (Info)
Genus: Ipomoea (ip-oh-MEE-a) (Info)
Species: nil (nil) (Info)
Cultivar: Akatsuki no Tsuyu
Additional cultivar information:(aka The Dew at Dawn, Blue Silk)



Vines and Climbers

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)


3-6 in. (7-15 cm)

6-9 in. (15-22 cm)

9-12 in. (22-30 cm)


Not Applicable

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade

Partial to Full Shade

Full Shade


Seed is poisonous if ingested

Parts of plant are poisonous if ingested

All parts of plant are poisonous if ingested

Bloom Color:

Light Blue

White/Near White

Bloom Time:

Blooms repeatedly



Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds


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

Elk Grove, California

Los Angeles, California

Hollywood, Florida

Barbourville, Kentucky

Cumberland, Maryland

Madison, Mississippi

Dundee, Ohio

Scio, Oregon

Philadelphia, Pennsylvania

Lafayette, Tennessee

Westmoreland, Tennessee

Freeport, Texas

Jacksonville, Texas

Needville, Texas

Plano, Texas

Round Rock, Texas

Shepherd, Texas

Franklin, Wisconsin

show all

Gardeners' Notes:


On Sep 18, 2005, Texasbloomer from Plano, TX wrote:

An awesome blue-bloomer! The one I planted (early May in a pot) [in our friends' yard) (darn) is 8' but now is in the ground. 20+ blooms a day, minimum since mid-Aug. Has only shot out 2 or 3 little seed pods. Blondie-seeds! I planted a few seeds in my own yard mid Aug. and they're up 3' with a couple of low-to-the-ground blooms each day just this week. What a pretty blue and pattern!


On Jun 28, 2005, QueenB from Shepherd, TX (Zone 8b) wrote:

Very beautiful watercolor effect! They truly are an outstanding flower. Flower color can vary from vine to vine.


On Jun 2, 2005, WillowWasp from Jones Creek, TX (Zone 9a) wrote:

Another very large flowered Japanese Morning Glory but the same draw backs as the others. Wind and rain take a terriable tole on these beautiful flowers.
Very pretty pale blue with picotee edging..........very,very pretty.


On Feb 22, 2005, Seedsower from Franklin, WI (Zone 5a) wrote:

I have been growing this for several years but am unable to collect seed due to our short growing season. It is just lovely and a color not often found in the garden.