Lagerstroemia indica
Crape Myrtle
A planting guide to Lagerstroemia indica (crape myrtle), the summer-flowering tree used as a landscape accent, street tree and long-season colour feature.
- specimen planting
- flowering accent
- street tree
- mass planting
Lagerstroemia indica, with its vividly coloured flower clusters that last from midsummer into autumn, is one of the most eye-catching seasonal features in the landscape. Fully deciduous, this tree offers visual interest even in the leafless season thanks to its smooth, peeling bark. Its long flowering period means it continues adding colour to the landscape well after many other species have finished blooming. With cultivars available in pink, purple, red and white, the species gives designers considerable freedom when building a colour composition.
Appearance and growth habit
The leaves are oval, dark green and glossy, turning shades of yellow, orange and red in autumn for an additional seasonal display. The flowers open in crinkled-petalled clusters of pink, purple, red or white and can last for weeks. It is a moderate grower, typically reaching 3-7 metres at maturity, which suits it well to both small gardens and street tree planting.
Climate and soil requirements
The mild climate of the Marmara region generally suits crape myrtle well; established plants can withstand cold down to around -15 °C, though harsh winters can cause dieback on younger branches, which is usually compensated for by fresh regrowth the following season. It needs full sun — flowering drops off noticeably in low light. It performs best in well-drained, humus-rich soil; heavy, waterlogged ground should be avoided.
Planting
The best planting window is late autumn through early spring, allowing root development to finish before summer heat arrives. Dig a hole twice the width of the root ball, working organic matter into heavy soils to improve drainage. Water thoroughly after planting and maintain regular watering through the first growing season. Choosing a sunny position directly supports both healthy growth and the abundant late-summer flowering the species is known for.
Maintenance and pruning
An annual prune in winter, while the plant is fully dormant, is recommended for abundant flowering, since flowers form on the current season’s new growth. Avoid overly hard, stubbing cuts, and take care to preserve the tree’s naturally graceful branching habit. Once established, the root system shows moderate drought tolerance.
Landscape uses
Its long, colourful flowering period makes it ideal as a specimen tree, and it is a frequent choice as a street tree, courtyard planting and flowering accent. In mass plantings, different flower colours can be combined to build a lively landscape composition.
Common problems
Powdery mildew (Erysiphe) can appear as a whitish coating on leaves, particularly in humid, poorly ventilated conditions; good air circulation and a sunny position reduce this risk. Aphids occasionally appear on fresh shoots. Heavy, waterlogged soil raises the risk of root rot. Frost damage to young branches in harsh winters is usually not permanent; the plant recovers quickly in spring, flowering again on that season’s fresh growth.
Frequently asked questions
When does crape myrtle flower?
In the Marmara climate, Lagerstroemia indica typically flowers profusely from July through September, after many other tree species have finished blooming. This makes it valuable for filling the colour gap in late-summer landscapes.
Does crape myrtle lose its leaves in winter?
Yes, it is fully deciduous and usually puts on an additional autumn display of yellow, orange and red foliage. Its smooth, peeling bark also adds visual interest through winter.
How often should crape myrtle be pruned?
An annual prune in winter, while the plant is fully dormant, is recommended for abundant flowering, since flowers form on the current season's new growth. Avoid overly hard, stubbing pruning, and preserve the tree's natural form.