Shrub
Crape myrtle
Lagerstroemia indica
A shrub or small tree with summer clusters of crinkled flowers, peeling bark and colourful autumn leaves. Good flowering needs warmth; winter survival depends on the cultivar and site.
- Size
- 4–8 m high · 4–8 m wideVaries by cultivar
- Light
- Full sun
- Water
- Moderate
- Winter
- Needs protection
- Seasonal form
- Deciduous
- Maintenance
- Moderate
Before planting
- In a suitable climate it reaches about 4–8 m in height and spread. Dwarf cultivars stay much smaller; check the mature size of your selection.
- It flowers best in a warm summer with full sun. Choose a sheltered site and moderately fertile, well-drained soil.
- Hardiness depends on the cultivar and site. Outdoor planting is risky in cold climates; overwinter container plants in a cool, frost-free place.
Why choose it
- Flower panicles bring summer colour and may continue into autumn in a favourable climate.
- Peeling bark reveals patches of different colours and remains attractive after leaf fall.
- Autumn leaves may turn yellow, orange or red; flower colour depends on the cultivar.
Care
- Water while roots establish and during drought. Mature plants tolerate dry spells, but water during flowering helps the display.
- If pruning is needed, do it in late winter or early spring before growth starts. Flowers form on new shoots; annual topping is unnecessary.
- Mulch over the root area. Avoid excessive nitrogen, which may encourage leafy growth at the expense of flowers.
Good to know
- Powdery mildew can occur; a sunny, airy site and a suitable cultivar help reduce the problem.
- Some plants sold as crape myrtles are hybrids. Their improved cold or disease resistance must not be assumed for the whole species.