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Wall Lettuce

Mycelis muralis

Also listed as Lactuca muralis, Chondrilla erysimifolia

herbaceous⛅ part shade💧💧 moderate water❄ Hardy: Zone 5a – Zone 9b

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Wall Lettuce is a delicate, slender perennial with small yellow flowers and thin leaves, commonly found growing on walls and rocky outcrops. It thrives in shade and requires minimal care, making it suitable for rock gardens or crevice planting.

Why grow it

Wall Lettuce is a shade-tolerant perennial that establishes readily in marginal growing spaces where many vegetables struggle, particularly rocky or crevice sites unsuitable for conventional cultivation. Compared to other leafy perennials, its minimal fertility and water demands make it useful for low-input systems, though its small leaves and thin stems produce less biomass per plant than annual lettuce varieties. It functions more as a pioneer species for difficult sites than as a primary food crop.

Watch out for

Self-seeds prolifically in suitable conditions, which may require management if you wish to contain it to specific planting areas. Young growth is tender and palatable, but as plants mature the leaves become increasingly bitter and fibrous, limiting harvest windows.

Overview

Form
Upright
Growth Rate
moderate
Size
0.5–2′ tall × 0.5–1.5′ wide
Dormancy
deciduous
Family
Asteraceae
Edible

Native Range

Europe

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Harvest Season

J
F
M
A
M
J
J
A
S
O
N
D

Edible Parts

leaf

Season of Interest

SummerFall

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Companion Planting

Plants well with