Originating in the Middle Ages, the earliest knot gardens formed structured patterns of interwoven hedges, enclosed by a fragrant planting of rosemary, marjoram, thyme, etc. The spaces between were filled with herbs or coloured gravel. Dwarf Box as an edging came into use in the 17th century.

This Knot Garden is based on an English design published in 1638, and features interlaced patterns surrounded by lavender hedges. This garden is shaded by a giant specimen of weeping elm, certainly one of the Gardens' most magnificent trees.