Oxypetalum, Southern Star, Tweedia 'Heavenborn'

Oxypetalumcoeruleum

Family
Apocynaceae (a-pos-ih-NAY-see-ee)
Genus
Oxypetalum (oks-ee-PET-al-um)
Species
coeruleum (ko-er-OO-lee-um)
Synonym
Sun Exposure
Sun to Partial Shade
Foliage
Smooth
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness
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)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Bloom Color
Light Blue
Blue-Violet
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Other Details
Category
Tropicals and Tender Perennials
Vines and Climbers
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Blue-Green
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
Patent Information
Propagation Methods
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; sow indoors before last frost
From seed; direct sow after last frost
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:

Anniston, Alabama

Toney, Alabama

Clayton, California

Fullerton, California

Los Angeles, California

Vista, California(9 reports)

Deland, Florida

Snellville, Georgia

Eupora, Mississippi

Hattiesburg, Mississippi

Elizabeth City, North Carolina

Atlanta, Texas

Austin, Texas

Brenham, Texas

Garland, Texas

Houston, Texas

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Gardener's Notes:

2
positives
1
neutral
0
negative
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D
D
Los Angeles, CA (Zone 10a) | August 2009 | positive

although this plant is not as close a relative to common milkweeds as some other cultivars, the first year i had my plant, it was feasted...Read More

V
(Zone 8a) | August 2008 | positive

aka blue butterfly weed. just purchased it, no experience yet.
08/2009 Be very skimpy w/ water; it rots easily. Mine is planted ...Read More

L
Grove City, OH (Zone 6a) | August 2002 | neutral

Plant was purchased already blooming; somewhat leggy. Failure to remove seedpods in a timely manner will result in the death of this pla...Read More

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