The characteristics of lagerstroemia
- Type: flowering shrub
- Height: 5 to 10 m
- Flower colors: red, white, pink, purple
- Desired exposure: sunny
- Type of soil: humus
- Foliage: spent
- Interview: frequent watering
- sanitizer: no
- diseases: powdery mildew, red spider, aphids
Origins and peculiarities of lagerstroemia
The lagerstroemia is a flowering shrub whose best known species is the lagerstroemia Indica, better known by the pretty name of indian lilac. From the lythraceae family, this flowering shrub is appreciated as much for its blazing foliage in the fall as for its multiple cluster flowers which bloom from July to October.
Native to China, lagerstroemia is cultivated in pots, hedges or clumps, but can also be used to make very beautiful bouquets of flowers. It is a Swedish botanist who gave his name to this shrub which appeared in France in the 18th century, even if it has been cultivated more intensively for half a century.
Today, there are various varieties of lagerstroemias like the lagerstroemia Kimono, the lagerstroemia Jeanne Desmartis or the Red Rocket. Depending on the variety, the flowers are sometimes white, sometimes pink or red. Some are vigorous and accept mild climates while others prefer heat and sun. The foliage of this shrub is deciduous and the leaves are oval; their size and color vary according to the species.
Except in the mountains, the indian lilac fits everywhere: simply choose the variety that suits your climate. The lagerstroemia needs a rich, fresh, drained, not very calcareous soil, but also a lot of sun. It does not like temperatures below -15 °.
It is planted in the fall in the South, after the frosts in other regions. Be sure to respect a space of at least 2 to 3 m depending on the varieties if you grow it in the ground. To do this, dig a hole large enough to contain its roots and make a supply of compost to feed your shrub, follower of rich soils.
Cultivation and maintenance of lagerstroemia
The lagerstroemia is a humidity lover who fears drought, so make sure to water it regularly and abundantly in summer. Do not hesitate to mulch the base of the shrub to keep a little freshness.
A contribution of compost each year is not superfluous, far from it, the objective being to regularly enrich the ground at the feet of your lagerstroemia. It is also advisable to weed so as not to let the weeds use the resources of your shrub.
If you want to grow your flowering shrub in pots, be sure to fertilize it in the spring and water it regularly until the end of the summer.
Size of the lagerstroemia
The size of the lagerstroemia takes place in March and consists in removing the aging twigs from the previous year to give vigor to your shrub. Also make sure that the branches do not cross.
Multiplication of lagerstroemia
This involves practicing cuttings by taking semi-augured wood at the end of summer to place it in a mixture of peat and sand. Place the subframe and plant in the ground or in a pot the following spring.
Diseases and pests of lagerstroemia
Aphids can attack your Indian lilac, spray garlic manure to keep them away. Red spiders take advantage of a dry atmosphere to tire your shrub. In this case, it is advisable to shower your lagerstroemia and to take care to preserve a certain humidity. Finally, powdery mildew, conversely, develops if the humidity is too high. Spray sulfur before flowering to avoid this disease.