Tall Morning Glory
Ipomoea purpurea 'Joyce Cobb'

Family: Convolvulaceae (kon-volv-yoo-LAY-see-ee) (Info)
Genus: Ipomoea (ip-oh-MEE-a) (Info)
Species: purpurea (pur-PUR-ee-uh) (Info)
Cultivar: Joyce Cobb

Category:

Annuals

Vines and Climbers

Height:

4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)

Spacing:

3-6 in. (7-15 cm)

6-9 in. (15-22 cm)

Hardiness:

Not Applicable

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade

Danger:

Seed is poisonous if ingested

Bloom Color:

Fuchsia (Red-Purple)

Blue-Violet

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Blooms repeatedly

Foliage:

Velvet/Fuzzy-Textured

Other details:

May be a noxious weed or invasive

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

Average Water Needs; Water regularly; do not overwater

Self-sows freely; deadhead if you do not want volunteer seedlings next season

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:

Non-patented

Propagation Methods:

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

Direct sow as soon as the ground can be worked

From seed; sow indoors before last frost

From seed; direct sow after last frost

From seed; germinate in a damp paper towel

From seed; germinate in vitro in gelatin, agar or other medium

Scarify seed before sowing

Seed Collecting:

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

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored

Regional

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

Elk Grove, California

Moreno Valley, California

San Diego, California

Temple City, California

Zephyrhills, Florida

Tower, Minnesota

Carson City, Nevada

Mesquite, New Mexico

Dundee, Ohio

Zanesville, Ohio

Lafayette, Tennessee

Plano, Texas

Chesapeake, Virginia

show all

Gardeners' Notes:

4
positives
0
neutrals
0
negatives
RatingContent
Positive

On Oct 25, 2006, zville123 from Zanesville, OH (Zone 6a) wrote:

I grew 4 'Joyce Cobbs' this year. Two looked like OhioBreezy's pictures (probably because I did get some of the seeds from her LOL). One was almost white with light purple markings. Another was a darker purple than the pictures by OhioBreezy. We ran heavy duty fishing line (next time we'll use something heavier) up to an old antenna bracket close to our roof (we live in a 2 story Cape Cod). The MGs scrambled right up to the roof. When we looked out one of the bedroom windows in the AM, we could see a wall of 'Joyce Cobb.' I'll definitely be growing these again. They do seed heavily...all the more to share with our neighbors who loved them, too!

Positive

On Aug 31, 2006, rh3708 from Westmoreland, TN (Zone 7a) wrote:

I have grown this MG for 2 years now and it's one that turns heads every time.
The bloom is small 2 1/2 inches but the white in the center makes it jump out at you when you see it growing in the tree in my yard.
Its a keeper in my collection of purpurea that i grow since i came here.

:}
Robbie

Positive

On Aug 30, 2005, Gourd from Mesilla Park, NM wrote:

This is real gem of a Morning Glory. It makes such a splash and just stops you in your tracks.

The heat here does almost melt the flowers by 11 AM. But, I feel that if it is grown in a colder climate, the blooms should last open longer.

This one in particular reseeded itself. I will definitely grow alot more of this one if I get seeds.

Positive

On Jul 8, 2004, OhioBreezy from Dundee, OH (Zone 5b) wrote:

A very pretty bloomer, starts out darker purple in color with dots, as it "fades" it is more of a pretty pinkish color wth spots, lovely!!