| Latin Name: | Parietaria diffusa |
| Common Name: | Pellitory of the wall |
| Family: | Urticaceae |
| Synonyms: | P. officinalis. Auct non L. P. ramiflora. |
| Known Hazards: | None known |
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Author: Mert.&Koch.
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| Habit: Perennial |
| Habitat: Hedgebanks and dry walls[7, 17]. |
| Height: 0.6 Width: 0.6 |
Cultivation Details:
Prefers a well-drained to dry alkaline soil in full sun or semi-shade[238]. The plant grows well on drystone walls[17].
This plant is sometimes erroneously called P. officinalis. The true P. officinalis. L. is an European plant that is not found in Britain, P. diffusa is its British representative[50].
The pollen of this plant is one of the earliest and most active of the hay fever allergens[7].
Dioecious. Male and female plants must be grown if seed is required.
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Propagation Notes:
Seed - sow spring or autumn in a cold frame. Prick out the seedling when they are large enough to handle and plant them out in the summer. If you have sufficient seed then it can be sown in situ in autumn or spring.
Division in spring.
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