Is Snowdonia Bog Cotton (cotton-grass) Plumes happening right now?
As of Jun 19, 2026, 8:24 PM, peak season now, through ~July 10. Earth Exhibit tracks the live conditions and flags it the moment it is on.
Each summer Snowdonia's blanket bogs and upland mires fill with the white plumes of cotton-grass (Eriophorum spp.).
The feathery seed heads create broad, shifting carpets on peatlands and are easiest to photograph in calm light at dawn or dusk.
Displays vary by altitude and bog condition.
Where to see it
A taste of where to see it. The full map, exact coordinates and the best timing for each spot live in the app.
| Viewing spots |
|---|
| Cwm Idwal National Nature Reserve (Ogwen Valley) |
| Llyn Cwellyn peatlands (Rhyd Ddu / Beddgelert area) |
| + 1 more spot, with exact coordinates and timing, in the app → |
This is the short version
This page shows a taste. The app has the full list of where to see this, the exact timing, and live conditions for 1,000+ natural phenomena worldwide, so you know the moment one is genuinely worth the trip.