Ipomoea, Japanese Morning Glory 'Akatsuki no Umi'

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 Umi



Vines and Climbers

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

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

Flowers are fragrant

Water Requirements:

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Suitable for growing in containers


12-15 ft. (3.6-4.7 m)


3-6 in. (7-15 cm)


Not Applicable

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade


Seed is poisonous if ingested

Parts of plant are poisonous if ingested

All parts of plant are poisonous if ingested

Bloom Color:

Dark Blue

Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter


Grown for foliage


Other details:

May be a noxious weed or invasive

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:


Propagation Methods:

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored


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

Carmichael, California

Elk Grove, California

Hesperia, California

Jacksonville, Florida

Barbourville, Kentucky

La Place, Louisiana

Ellicott City, Maryland

Mathiston, Mississippi

New Milford, New Jersey

Dundee, Ohio

Ronks, Pennsylvania

Westmoreland, Tennessee

Brazoria, Texas

Freeport, Texas

Plano, Texas

Round Rock, Texas

show all

Gardeners' Notes:


On Sep 6, 2006, AshuraLiu from Taipei,
Taiwan wrote:

[English is not my native language:)]

'Akatsuki no Umi' means "sea of dawn" in Japanese.
Many Japanese MGs have huge blooms , almost too huge to maintain the petals by itself. So it's better NOT let it climb and crawl freely , that will often make the flowers come out to be imperfect-shape or broken-petal.

Try to "disbud" the top when the plant has 10 leafs.This will control its invasive vines and keep it short. Also those side-vines which grows out later will bloom more than the original main vine.

These fit almost every kind of huge-bloom Japanese MGs.

by M.G.-lover come form Taiwan


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

Ah, this vine took off well from seed-in-ground early May. First bloom appeared mid Aug. and there are more everyday. Vine is about 6' and produces a dozen or so blooms daily. Some blooms (like most Jap. MG's) bloom near the ground and others are over the 5' wall.
Mine look just like the photo from Gerris2. Such a deep, rich color. One of my favorites.


On Oct 25, 2004, theresamendoza from Hesperia, CA (Zone 8a) wrote:

This morning glory is a beautiful 3-4 inch bloomer in my zone 8 area.
It blooms only in the fall. This year, the plant returned in late September and is blooming beautifully but the vine only grows about 5-6 foot in my yard. It is in an area that only gets about 4 hours of sun.
I don't remember sewing it myself but I love it in contrast to the smaller violet and light colored ones I get in my back yard.


On Oct 23, 2004, WillowWasp from Jones Creek, TX (Zone 9a) wrote:

One of the most beautiful of the Blue Morning Glories, Dark Blue Skirt with a white throat, and not a hint of another color.This one is electric looking it is soooo blue. I will plant it again and again, it bloomed all summer and well into fall even in the Texas heat.


On Sep 14, 2004, OhioBreezy from Dundee, OH (Zone 5b) wrote:

Stunningly blue!!! with a gorgeous white throat. This one is a definite climber, huge 4-6 inch blooms that grab your attention!