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PlantFiles: Chinese Plumbago
Ceratostigma willmottianum

Family: Plumbaginaceae (plum-baj-i-NAY-see-ee) (Info)
Genus: Ceratostigma (ser-uh-toh-STIG-muh) (Info)
Species: willmottianum (wil-mot-ee-AH-num) (Info)

2 vendors have this plant for sale.

2 members have or want this plant for trade.


24-36 in. (60-90 cm)

36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Late Summer/Early Fall
Mid Fall

Grown for foliage
Good Fall Color

Other details:
Average Water Needs; Water regularly; do not overwater
This plant is resistant to deer

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 semi-hardwood cuttings
By simple layering

Seed Collecting:
Unknown - Tell us

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2 positives
1 neutral
No negatives

Gardeners' Notes:

Positive dave12122 On Jul 4, 2011, dave12122 from East Haddam, CT wrote:

A fantastic plant which is borderline hardy here. Needs a 1-2 ft. mulch of hay or shredded leaves from Nov.1st- April 1st to survive. Does not flower until early September, but then blooms until hard frost. The blooms are electric blue and stunningly gorgeous. Responds to heat and sun, this is not a shade tolerant plant like Ceratostigma plumbaginoides. Well worth a gamble, this is excellent on the south side of the house near the foundation for winter protection.

Positive purplesun On Nov 4, 2009, purplesun from Krapets
Bulgaria (Zone 8a) wrote:

A perennial plant for me, with wonderfully blue flowers that remind me of forger-me-nots. This is a very showy plant in autumn when nothing else is in flower. I guess it could make an interesting combination with Garden Mums.

Neutral Terry On Aug 10, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

Produces deep gentian blue flowers with white eyes from late summer to fall, while the blue-green leaves turn vivid crimson, creating a striking contrast.

A deciduous shrub from China, it is named for the famous British gardener, Miss Ellen Ann Wilmott.


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

Santa Rosa, California
East Haddam, Connecticut
Bushnell, Florida
Port Saint Lucie, Florida
Dayton, Ohio

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