Walled Garden, Knock Castle is a Grade B listed building in the North Ayrshire local planning authority area, Scotland. First listed on 29 August 1985.

Walled Garden, Knock Castle

WRENN ID
frozen-latch-clover
Grade
B
Local Planning Authority
North Ayrshire
Constituency
North Ayrshire and Arran MP: Irene Campbell (Lab)
Country
Scotland
Date first listed
29 August 1985
OS grid reference
NS 194 631
Coordinates
55.82798, -4.8844
Source
Historic Environment Scotland listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The walled garden at Knock Castle was probably remodelled or rebuilt around 1852 by J T Rochead. It is a rectangular garden enclosure defined by yellow brick walls topped with red ashlar coping slabs. Red ashlar gatepiers, also castellated, support wrought-iron gates. A long glass house range runs along the north wall, featuring a distinctive polygonal centrepiece. A castellated turret is centrally located on the west wall, accessed by steps from the garden, and featuring four round-headed openings. A continuous string course sits above these openings, rising to a corbelled and crenellated parapet.

Historical records, including a plan from 1847 in the Strathclyde Regional Archives (T-PM 134/113), show a simpler rectangular garden enclosure originally existed on the site. The turret is marked on the first edition Ordnance Survey map of 1854.

Local climate

Walled Garden, Knock Castle sits in one of the wettest parts of the UK, with an average of 1,690 mm of rain a year. This makes it wetter than 99% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 96% of listed buildings.

It experiences an average of 43 freeze-thaw cycles a year, more than 84% of listed buildings. Of these, 24 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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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  • 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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Nearby listed buildings

  1. Glasshouses In Walled Garden, Knock Castle Grade B 31 m
  2. Knock Old Castle Grade B 115 m
  3. North Lodge, Knock Castle Grade C 117 m
  4. Knock Castle Grade A 183 m
  5. Stables, Knock Castle Grade C 234 m
  6. West Lodge, Knock Castle Grade B 549 m
  7. Lodge, Manor Park Hotel Grade C 574 m
  8. Manor Park Hotel Grade B 691 m
  9. Stable Block, Manor Park Hotel Grade C 792 m
  10. Quarter House Grade C 1.1 km