Threave Garden is delightful in all seasons. At 26 hectares (64 acres), it is best known for its spectacular springtime daffodils (nearly 200 varieties), but herbaceous beds are colourful in summer and trees and the heather garden are striking in autumn. The Victorian house (not open to the public) is home to the National Trust for Scotland’s School of Practical Gardening, offering a one year training course for students who already possess some horticultural experience. Guided walks are available and there is a visitor centre.