powdery mildew on Lagerstroemia Indica
Quick answer
If your Lagerstroemia Indica has powdery mildew, the most likely cause is: On Lagerstroemia indica (crape myrtle), shaded sites with poor air circulation and damp foliage promote a fungal powdery mildew that the source describes as a serious problem on the foliage, while mildew-resistant cultivars selected by a National Arboretum breeding program exist specifically to avoid it.
Start here:
- 1. Plant Lagerstroemia indica in full sun with good drainage so the foliage dries quickly and the fungus is less able to take hold on the leaves.
- 2. Choose mildew-resistant Lagerstroemia indica cultivars produced by the National Arboretum breeding program when buying new crape myrtles.
Why Lagerstroemia Indica gets powdery mildew
Lagerstroemia Indica
On Lagerstroemia indica (crape myrtle), shaded sites with poor air circulation and damp foliage promote a fungal powdery mildew that the source describes as a serious problem on the foliage, while mildew-resistant cultivars selected by a National Arboretum breeding program exist specifically to avoid it.
How to reverse powdery mildew on Lagerstroemia Indica
- 1
Plant Lagerstroemia indica in full sun with good drainage so the foliage dries quickly and the fungus is less able to take hold on the leaves.
- 2
Choose mildew-resistant Lagerstroemia indica cultivars produced by the National Arboretum breeding program when buying new crape myrtles.
- 3
Prune in winter to open the canopy, cutting shrub forms to ground level and removing sucker shoots, water-sprouts, and rubbing branches on tree forms so air moves freely through the foliage.
Keep powdery mildew off this Lagerstroemia Indica
Site Lagerstroemia indica in full sun with good drainage and select mildew-resistant cultivars so the foliage stays dry and well ventilated.