Wall lettuce
Mycelis muralis · Asteraceae
The gardener's calendar
Ideal time to plant wall lettuce: 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
- Adult size
- 30 to 60 cm in height
- Growth
- Fast
- Hardiness
- Very hardy (down to -15 °C)
- Origin
- Central and southern Europe
- Soil type
- Well-drained, chalky or neutral
Care
Light Exposure
Install wall lettuce in semi-shaded or partial shade conditions, although it tolerates full sun in cool climates. It particularly enjoys walls, paving stones and rocky areas with limited exposure to intense light.
Watering
Water moderately during the growing period (spring-summer), allowing the substrate to dry out slightly between waterings. Reduce watering in winter. This plant appreciates air humidity but dislikes stagnant water.
Soil Preparation
Choose well-drained, gravelly or rocky soil, rich in lime. Adding gravel or pumice facilitates rooting and prevents root rot. Wall lettuce adapts well to poor soils.
Pruning and Cleaning
Remove dried or damaged leaves as you go. After autumn flowering, light cutting back in late winter stimulates branching. Clean rosettes to prevent debris buildup.
Fertilizing
No fertilizer is essential, except if the soil is very depleted. A light application of compost or organic matter in spring is enough to support growth. Avoid excess nitrogen which would weaken the structure.
Diseases and Pests
Wall lettuce is generally very resistant. Watch for slugs and snails in spring-summer. Powdery mildew may appear if humidity is excessive and air circulation is poor; improve ventilation.
Did you know?
Wall lettuce gets its name from its natural habitat: it colonizes old walls, stone walls and rocky areas of central Europe, where it takes root in crevices. Its discreet yellow flowers feed pollinators in late summer, and it long served as an indicator of iron ore in chalky soils.
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.