Photo by Melody

PlantFiles: Japanese Morning Glory
Ipomoea nil 'Heian no Izumi'

Family: Convolvulaceae (kon-volv-yoo-LAY-see-ee) (Info)
Genus: Ipomoea (ip-oh-MEE-a) (Info)
Species: nil (nil) (Info)
Cultivar: Heian no Izumi

One vendor has this plant for sale.

3 members have or want this plant for trade.

Vines and Climbers

10-12 ft. (3-3.6 m)

3-6 in. (7-15 cm)

Not Applicable

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

Seed is poisonous if ingested

Bloom Color:
Magenta (Pink-Purple)

Bloom Time:
Blooms repeatedly


Other details:
May be a noxious weed or invasive
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

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 herbaceous stem cuttings
From seed; stratify if sowing indoors
From seed; direct sow after last frost
From seed; germinate in a damp paper towel
Scarify seed before sowing
By grafting
By air layering

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

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2 positives
No neutrals
No negatives

Gardeners' Notes:

Positive Texasbloomer On Sep 19, 2005, Texasbloomer from Plano, TX wrote:

One of my tough favorites. Started in a pot in April. set outside in May. Got to 10" or so. Bunnies chewed it all the way down. I cried. Doctored it for a month. Then it began to grow. Planted in ground late June. Only 5 of 8 seeds germiniated originally. It is 7' or so. First blooms mid-Aug. Everyday since, there's a dozen or more lavender blooms, though the vine is very very thin. Some bloom at ground, some over the wall. SO beautiful. LARGE 6" blooms but touch, to wind, to rain. Luckily more come each day. Love the lilac color.

Positive WillowWasp On May 30, 2004, WillowWasp from Jones Creek, TX (Zone 9a) wrote:

Beautiful large pale lavender blooms, about 4 and a half to 6 inches across, with large varigated tri lobed leaves. Blooms stay open all day with full noon day sun. It is in morning and evening shade and has full sun midday. Bloomed from bottom to top with seed pods begining to form about mid way up the vine. The bottom blooms did not produce seed pods.
Blooms are very likely to tear, due to wind or rain as they are thin and quite large.
Color on this flower seems to be completely pale lavender from throat to tip with a very slight color change in the throat but hardley noticeable. On most blooms I notice no color variation at all.


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

Elk Grove, California
Wilmington, Delaware
Dundee, Ohio
Lafayette, Tennessee
Lake City, Tennessee
Brazoria, Texas
Freeport, Texas
Plano, Texas
Franklin, Wisconsin

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