Japanese Morning Glory 'Star of India'

Ipomoea nil

Family: Convolvulaceae (kon-volv-yoo-LAY-see-ee) (Info)
Genus: Ipomoea (ip-oh-MEE-a) (Info)
Species: nil (nil) (Info)
Cultivar: Star of India
Additional cultivar information:(aka Royal Robe)
Registered or introduced: 1998



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


10-12 ft. (3-3.6 m)


3-6 in. (7-15 cm)


Not Applicable

Sun Exposure:

Sun to Partial Shade


Seed is poisonous if ingested

Bloom Color:


Dark Purple/Black

Bloom Time:

Blooms repeatedly



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:

Unknown - Tell us

Propagation Methods:

From softwood cuttings

From seed; stratify if sowing indoors

From seed; sow indoors before last frost

From seed; direct sow after last frost

From seed; germinate in a damp paper towel

By air layering

Seed Collecting:

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

Properly cleaned, seed can be successfully stored


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

Elk Grove, California

Brooksville, Florida

Lake City, Florida

Mesquite, New Mexico

Cincinnati, Ohio

Brazoria, Texas

Freeport, Texas

Plano, Texas

Shepherd, Texas

Virginia Beach, Virginia

show all

Gardeners' Notes:


On May 3, 2008, Gourd from Mesilla Park, NM wrote:

This was such a nice surprise as the packet was listed as Jishi in 2004 and I decided to grow out all the older seeds. Well, this turned out to be Star of India aka/or from the old cultivar Royal Robe. VERY nice flower and I hope to get seeds from this. Out of the 10 seeds, this is the only one that came out like this, all the rest were totally different I. nils.


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

I started my vine in a pot late March. It was alm. the first to bloom and I left it in it's pot til late Aug. when it died.
Mine never grew more than a 18" - 2' tho many of my mg's grew huge in a large pot. However, I got a couple of blooms almost everyday and fell in love with the deep purplish-blue hue and the awesome star! Last month I decided to photograph it w/both digital, and 35mm(...the most reliable to achieve true color) and shot the star in different hours and in different light. Will post pictures soon; it was amazing as I never noticed the transformation quite like this, in previous weeks of blooming. I loved these blooms!


On Jul 29, 2005, RON_CONVOLVULACEAE from Netcong, NJ (Zone 5b) wrote:

This cultivar was first selected out of the first offerings of the "Sunrise Mix"(aka Akatsuki mix ala Sakata) made available through a co- member of the Flower & Herb Exchange in 1998,which is when and where I first acquired seeds of this cultivar ...
I have grown the Ipomoea nil Early Call mixes for most of my life and have never seen this come out of any Early Call mix...
I am of the strong opinion that what is being called 'Star of India' is one of the several natural color variations of the "Royal Robe" cultivar as first made available through the F&HE in 1998...
The "Fragrant Path" company first offered their 'Star of India' synonym at least several years after it was first available through the F&HE.
There is also a pink mutation of ... read more


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

This particular Japanese Morning Glory has been very easy to grow, not near as picky as some of the other types. The flowers are deep, dark blue with a white picotee edging that varies from flower to flower, and gradually turns purple to dark pink as the flower ages. There is also a pink mutation, which shows the star much better since it's a lighter color, but it's not as outstanding as it's darker counterpart. Sets seed fairly easily compared to variegated cultivars.


On May 31, 2004, WillowWasp from Jones Creek, TX (Zone 9a) wrote:

Shiun which means "Purple Clouds" Very pretty dark purple with a pale purple to lavender throat with white scattered unevenly around the flowers rim. The leave are solid colored green and velevety. Flowers set seed pod with the first bloom.