Walter Nicol (20 April 1769 – 5 March 1811) was a Scottish garden and hothouse designer, who wrote several books on practical horticulture.
Nicol was born in Niddrie.
He was employed at a number of estates in Scotland and improved the design and layout of gardens and glasshouses.
Nicol is in particular responsible for the walled garden layout at Dalhousie Castle in Midlothian.
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