Trebah Garden
A ravine garden of tree ferns and giant rhubarb running down to its own beach on the Helford River.
Updated 20 October 2026

AI illustration
Trebah occupies a steep ravine dropping to the Helford River, and the shelter and the Cornish climate let it grow things that should not survive in Britain: tree ferns in a shaded gully, gunnera whose leaves reach over two metres across so that paths run underneath them, and a hydrangea valley in flower in late summer. Charles Fox laid it out after his family acquired Trebah in 1831; it declined from 1939, and Tony and Eira Hibbert restored it from 1981 and opened it to the public in 1987. At the bottom is Polgwidden Cove, a small beach that keeps some concrete structures from its wartime use.
The landscape
- The gunnera tunnel - paths running beneath giant rhubarb leaves.
- The tree fern gully - Dicksonia planted in a shaded ravine.
- Polgwidden Cove - the garden's own beach on the Helford River.
- The hydrangea valley - a valley of hydrangeas in flower in late summer.
When to go
March to October; magnolias and rhododendrons in spring, gunnera at full size by midsummer, hydrangeas in August and September. The garden opens year-round with reduced winter planting.
Before you go
The garden is a steep ravine and the walk back up from the beach is a serious climb, though a shuttle runs for those who need it. Paths are narrow and muddy after rain. The beach is small and shingle.
Nearby
Glendurgan garden adjoins; Falmouth and the Helford River lie either side.
Key facts
Source: Wikidata, item Q476407, read on 18 October 2026.
What to pack for Trebah Garden
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
- Daypack with rain cover - 20-30 litres holds water, snacks, layers and a first-aid kit. Find on Amazon
- Offline maps + a power bank - Download the trail before you lose signal; carry backup charge. Find on Amazon
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