West Swansea · High pressure
Sketty, Killay & Dunvant
Feeds straight into Clyne Valley. Rhododendron from old estate plantings and balsam along Nant Bran are the dominant problems, with knotweed on the railway path edges.
Streets and places to watch
- Gower Road
- Vivian Road
- Hendrefoilan
- Dunvant Road
- Goetre Fawr Road
These are the corridors where growth is most often recorded — lane walls, verges, brook banks and cleared plots. Individual gardens are not listed.
Towns, villages and places in this area
Each place has its own local guide with a map, area facts and the plants to watch for.
What grows here
Rhododendron ponticum
A Victorian garden shrub that has swallowed large parts of Clyne Valley and the Gower woodlands, turning ancient woodland floor into bare, dark, sterile ground.
Evergreen, flowers May–June
Himalayan balsam
The pink-flowered annual that lines almost every stream in Swansea. One plant throws up to 2,500 seeds and the seed floats, so a single upstream patch reseeds miles of bank.
Germinates March, flowers June–October, dies back with first frost
Three-cornered leek
Sometimes picked as wild garlic. It carpets shady verges, churchyards and hedge banks across west Swansea and Gower, replacing native bluebells and celandines.
Leaves from December, flowers March–May, dormant in summer