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August 2008
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Tabebuia serratifolia (aka known as Yellow trumpet tree or yellow poui tree)

Tabebuia makes an excellent shade, lawn, or street tree, or border plant. The yellow poui develops like a tree and is the national tree of Brazil. It is a tree that grows up to 37 m in height and has large buttresses at the base of the tree. (Explanation: Buttresses are flared supporting structures found at the base of the tree trunk that provide additional support for tall trees that grow in shallow soil without a deep root system.) Yellow poui isn’t an evergreen; during the autumn it assumes a orange-yellow-red coloring. It’s leaves are oblong-lance-shaped, and mid-green in color. Dense panicles of funnel-shaped yellow flowers with 5 crimped lobes are produced.
The tree needs sun for some time at least, and it is best to position the The yellow Poui in a place where it is exposed to at least a few hours of direct sunlight. You should avoid exposure to late freezings; grow it in a covered place, locating it outside only in late spring. During the winter young plants could need a light protection from the wind or cold; and they should be provided with a high stake to keep them erect. Watering is required only from time to time, and make sure that the soil around the tree is made wet every 4-5 weeks. As the root system develops, the tree no longer needs special watering.
Young plants need extra phosphorus to encourage good root development. Look for a fertilizer that has phosphorus. Apply the recommended amount during planting or during the first growing season.
The wood of Tabebuia is used extensively in construction due to its durability. The dense heartwood is light to dark brown, is easy to dry despite its density, and is used for house posts, and bridge building. It was also used to make railway sleepers where they still made of wood.
Many species of Tabebuia species develop close associations with ant colonies, providing habitat and food for the ants that are thought to provide protection to the plants from herbivory.

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