Walled garden at Plas Tirion is a Grade II listed building in the Gwynedd local planning authority area, Wales. First listed on 27 August 1999. Walled garden.
Walled garden at Plas Tirion
- WRENN ID
- crooked-cloister-birch
- Grade
- II
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 27 August 1999
- Type
- Walled garden
- Address
- Walled garden at Plas Tirion, Llanrug
- OS grid reference
- SH 524 627
- Coordinates
- 53.14168, -4.20679
- Source
- Cadw listing
Description
The walled garden at Plas Tirion features high walls made of irregularly coursed rubblestone, which includes many rounded stones. The walls are topped with stone-on-edge coping above a narrow slate band, enclosing a rectangular garden area that measures approximately 50 by 30 meters. There are entrances located on the north-east, north-west, and south-east sides, along with traces of former outbuildings that are attached to the inner face of the north-west side.
Local climate
Walled garden at Plas Tirion sits in one of the wettest parts of the UK, with an average of 1,380 mm of rain a year. This makes it wetter than 97% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 98% of listed buildings.
It experiences an average of 25 freeze-thaw cycles a year, fewer than 73% of listed buildings. Of these, 12 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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