Catalpa is a magnificent tree: it can be had as a shade plant as a shrubsince there are different varieties. In addition, it recovers well from pruning, so that even if it grows from 6 to 25 meters in height, you can always trim its branches to control its development.
Its beautiful white flowers are a real wonder: they can measure 4-5cm in diameter and when they appear, they attract numerous pollinating insects while brightening up the place where they are.
Characteristics of the Catalpa
Catalpa bignonoioides ‘Aurea’
When we talk about Catalpa we are talking about a deciduous tree that is left without its heart-shaped leaves during autumn-winter. In spring and summer it produces white or yellow flowers in large panicles, and after the end of the hottest season of the year, the fruits, similar to legumes, will ripen until they measure 20 to 50 cm in length.. Inside you will find the seeds, which have two thin wings that allow them to disperse with the help of the wind.
33 species of Catalpa are known, distributed by North America, the Antilles and East Asia. The best known are the following:
- C. bignonioides: is the most common. It grows naturally in the southeastern United States, reaching a height of 15 meters.
- Brood: Originally from China, it grows to a maximum height of 9 meters.
- C beautiful: It is native to the midwest of the United States, and one of the largest of the genus. It can reach a height of 20 meters, with a trunk over 1m in diameter.
What care do you need?
Catalpa erubescens ‘Powderulenta’
To have a magnificent copy of Catalpa, we invite you to follow our advice:
- Location: place your tree in an area where it gets direct sunlight.
- Land: the soil has to be slightly acidic (pH 5-6), fertile, loose. It is also important that it has good drainage to prevent the roots from suffocating from excess moisture (you have more information on this subject in this article).
- Irrigation: frequent in summer, somewhat scarcer the rest of the year. Generally, it should be watered every 2-3 days in the hottest months and every 5-6 days the rest of the year.
- Subscriber: for it to grow well, it should be fertilized during the spring and summer with organic fertilizers, such as worm castings or manure, putting a 2-3cm thick layer around once a month.
- Planting time: in spring, when the risk of frost has passed.
- Pruning: late winter.
- Multiplication: by seeds in spring and by semi-woody cuttings in summer.
- Rusticity: withstands cold and frosts down to -15ºC.
catalpa bignonoides
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