| Scientific Name: | Lactuca muralis |
| Common Name: | wall lettuce |
| Family Name: | Asteraceae |
| Origin: | Europe |
| Hardiness Zone: | Zone 8b: (-9.4 to -7 °C) |
| Plant Type: | Weed (horticultural) |
| Mature Size: | 0.7 - 1.3m x 0.3 - 0.6m (height x width) |
| Habit: | Upright |
| Form: | Oval - vertical |
| Texture: | Coarse |
| Landscape Uses: | |
| Exposure: | Full sun, Full sun only if soil kept moist, Part sun/part shade, Filtered shade |
| Soil or Media: | Rocky or gravelly or dry |
| Leaves: | Simple, Alternate, Soft flexible, Pinnate venation, Glabrous, Obovate, Dentate, Incised, Pinnately lobed |
| Flowers: | Head (capitulum), Yellow, May-Jun-Jul-Aug-Sep-Oct |
| Fruit: | Cypsela (achene + calyx), White, Brown, Jul-Sep-Oct |
| Key ID Features: | |
| Stems erect, 30-90cm tall with milky latex leaking if cut; leaves toothed, lobed almost to midrib with largest lobes towards the apex, 6-18(-25)cm long; flower heads 7-10mm wide comprised of 5 golden-yellow ray florets; achenes about 4mm long with silver-gray hairs. | |