hot walls
Garden walls provided with heating channels, or flues, which create an artificial microclimate for assisting in the growth or ripening of fruit tress or shrubs trained against the walls; popular in the 18th and 19th centuries.
Garden walls provided with heating channels, or flues, which create an artificial microclimate for assisting in the growth or ripening of fruit tress or shrubs trained against the walls; popular in the 18th and 19th centuries.