Ipomoea, Tall Morning Glory 'Kniola's Black'

Ipomoeapurpurea

Family
Convolvulaceae (kon-volv-yoo-LAY-see-ee)
Genus
Ipomoea (ip-oh-MEE-a)
Species
purpurea (pur-PUR-ee-uh)
Synonym
Convolvulus purpureus
Ipomoea hirsutula
Ipomoea purpurea var. diversifolia
Pharbitis purpurea
Sun Exposure
Sun to Partial Shade
Light Shade
Foliage
Herbaceous
Textured
Height
12-15 ft. (3.6-4.7 m)
15-20 ft. (4.7-6 m)
20-30 ft. (6-9 m)
Spacing
15-18 in. (38-45 cm)
Hardiness
Not Applicable
Danger
Parts of plant are poisonous if ingested
Bloom Color
Dark Purple/Black
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Annuals
Vines and Climbers
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
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; 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
Scarify seed before sowing
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored
Regional

This plant is said to grow outdoors in the following regions:

Tuskegee, Alabama

Carmichael, California

El Sobrante, California

Elk Grove, California

Richmond, California

Centerbrook, Connecticut

Smyrna, Delaware

Zephyrhills, Florida

Dunmor, Kentucky

Fitchburg, Massachusetts

Allen Park, Michigan

Bay City, Michigan

Lafayette, Tennessee

Thompsons Station, Tennessee

Brazoria, Texas

Jacksonville, Texas

Plano, Texas

Spring Branch, Texas

Vancouver, Washington

Madison, Wisconsin

show all

Featured Videos

Gardener's Notes:

3
positives
2
neutrals
2
negatives
Sort By:
Sort By:
P
Middleton, MA | July 2012 | neutral

Just bought and planted this Kniola in my garden against bunny ears plants for a contrasting light colored background. It will (hopefully...Read More

Q
Q
Allen Park, MI | July 2010 | negative

A couple of years ago I ran across Kniola blacks online and ordered some.

As they went to seed I saved them carefully as ...Read More

D
Dunmor, KY (Zone 6a) | November 2009 | positive

I've had a hard time getting this plant to "climb" on its own & resorted to tieing it up with string. In my opinion, the flowers are well...Read More

G
Smyrna, DE (Zone 7a) | August 2008 | positive

This is my first year for Kniola's Black Knight. It was started indoors in peat cups and transplanted in May. It has grown well, although...Read More

R
Madison, WI (Zone 5a) | March 2008 | neutral

This morning glory starts blooming earlier than others, while it is still vining (early July for me). The flowers are a very dark purple ...Read More

M
Fitchburg, MA | July 2004 | negative

Alright, I'd like to know who came up with this color scheme to a wonderful vine, they should be fired.

I got a package ...Read More

M
| June 2003 | positive

Very beutiful flower! In my opinion the correct name should be: Knowlian´s black

Featured
Goldenrod Crab Spider
(Misumena vatia)
Northern Mockingbird
(Mimus polyglottos)
Featured
Goldenrod Crab Spider
(Misumena vatia)
Northern Mockingbird
(Mimus polyglottos)