Lespedeza cuneata
Lespedeza cuneata · Fabaceae
The gardener's calendar
Ideal time to plant lespedeza cuneata: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Foliage
- Deciduous
- Flowering
- July to September
- Mature size
- 24 to 36 inches in height
- Growth
- Fast
- Hardiness
- Down to -4 °F
- Origin
- Asia Pacific
- Soil type
- Well-draining, tolerates poor soils
Care
Light Exposure
Place your Lespedeza in a sunny location, receiving at least 6 hours of direct sunlight daily. This plant loves light and weakens in shade. A south or west-facing exposure is ideal to encourage generous flowering.
Watering
Water regularly during the spring and summer growing phase, keeping the soil moist but not waterlogged. Once established, the plant becomes drought-tolerant. In winter, reduce watering considerably.
Soil
Lespedeza prefers well-draining soil that is poor to moderately fertile. It adapts to sandy or gravelly soils. Improve drainage in heavy soil by adding gravel or coarse compost.
Pruning and Maintenance
Cut the plant back to 4-8 inches from the ground in early spring, before growth resumes. This pruning stimulates compact growth and more abundant flowering. Remove dead or damaged stems during winter.
Fertilizing
A light application of balanced fertilizer in spring is sufficient. As a fabiacean, Lespedeza can fix atmospheric nitrogen, limiting its nutritional needs. Avoid excess feeding, which would reduce flowering.
Diseases and Pests
Lespedeza is rarely affected by diseases when drainage conditions are respected. Excess moisture can cause rot. Watch for potential aphid infestations, which can be controlled by water spraying or natural treatment.
Did you know?
Silky Lespedeza is renowned for its ability to stabilize eroded soils and has been widely used in Asia as an agricultural cover plant. In North America, this species has naturalized and become an important resource for bees and butterflies in late summer, a time when few other flowers are available.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.