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| Category: Tree |
| Family: Bignoniaceae (Bignonias) |
| Origin: Mexico (North America) |
| Evergreen: Yes |
| Flower Color: Pink |
| Bloomtime: Spring |
| Synonyms: [Tabebuia impetiginosa, T. ipe, H. heptaphyllus] |
| Height: 20-30 feet |
| Width: 10-20 feet |
| Exposure: Full Sun |
| Irrigation (H2O Info): Medium Water Needs |
| Winter Hardiness: 20-25° F |
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Handroanthus impetiginosus (Lavender Trumpet Tree) - A semi-evergreen tree that grows 20-30 feet tall with a gray fissured trunk and palmately-lobed leaves divided into as many as seven leaflets radiating outward. The pink trumpet flowers have a white throat with yellow stripes and blooms in large clusters in the spring just before the new foliage emerges. As a young tree, it may not bloom but when it does it often is spectacular. Give this tree full sun and regular watering. Hardy to 20-25 ° F or a little less. This plant was not damaged in our garden for the short duration low temperature or 18 ° F that we got in December 1990. Tabebuia impetiginosa comes from northern Mexico south to northern Argentina where it is a common tree in Argentina's northeastern region. It also has the common names of Pink Ipe or Pink Lapacho. In 2007 studies on the genus Tabebuia determined it to be polyphyletic (because as it has stood it includes Crescentia, Spirotecoma, and Ekmanianthe) with the solution being to split some members of the genus, including the two species commonly grown in California, into the new genus Handroanthus. Plants so separated can be distinguished from true Tabebuia based on the fact that they all have minute hairs on the leaves and flowers. Because of this, Tabebuia chrysotricha becomes Handroanthus chrysotrichus, and Tabebuia impetiginosa becomes Handroanthus impetiginosus. The genus name comes from a combination of 'Handro', for a 20th century Brazilian botanist Oswaldo Handro and 'anthos' from Latin for flower. More recent study of the group indicates the name applied to this plant, Tabebuia impetiginosa (now Handroanthos impetiginosos) was missapplied it it in fact be Handroanthus heptaphyllus which is the Black Lapacho, a tree growing in the high forest watershed of the Paraná River , Paraguay River , and Uruguay River.
This description is based on research and observations of this plant as it grows in our nursery, in our nursery garden and in other gardens that we visit. We also incorporate comments received and appreciate getting feedback of any kind from those who have any additional information about this plant, particularly if they disagree with what we have written or if they have additional cultural tips that would aid others in growing Handroanthus [Tabebuia] impetiginosus.
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