Oxypetalum coeruleum
| Oxypetalum coeruleum | |
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| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Gentianales |
| Family: | Apocynaceae |
| Genus: | Oxypetalum |
| Species: | O. coeruleum |
| Binomial name | |
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Oxypetalum coeruleum (D. Don ex Sweet) Decne. |
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Oxypetalum coeruleum is a species of flowering plant, native to South America from southern Brazil to Uruguay. The synonymous name Tweedia caerulea is also used. Growing to 100 cm (39 in) long, it is a straggling evergreen perennial with heart shaped, gray-green, downy leaves. It is grown for its clear pale blue, star-shaped flowers, which are long lasting and cut well. The summer flowers age to purple and are followed by 30 cm (12 in) long, boat-shaped seed pods. The seeds have downy parachute-like tufts (cypsela).
The cultivar 'Alba' has white flowers, while 'Rosea' has pink flowers.
Oxypetalum coeruleum requires full sun in a well-drained soil that is dry. Propagation is via seed. With a minimum temperature range of 3–5 °C (37–41 °F), it can be grown outdoors in a frost-free, sheltered environment. Alternatively it can be grown as an annual.
This plant has gained the Royal Horticultural Society's Award of Garden Merit.
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Wikipedia