Coleus caninus

Coleus caninus is known as the scaredy cat or scat plant, as its smell is said to deter cats, as well as other mammals including dogs, rabbits, and foxes. Reports suggest that this plant deters around two-thirds of all cats, so it’s not a fail-safe solution, but worth trying where neighbouring cats are visiting your garden and using flower or vegetable borders for their toilet.

Cat deterring aside, Coleus caninus is an attractive frost-tender perennial plant that forms a neat bush of lush foliage and bears blue flowers in summer. The rounded to scallop-edged green or grey-green leaves have a pungent unpleasant smell to humans, though mostly only when touched or bruised. Pale blue to violet blue flowers form lavender-like spires and are borne through summer, although not in the same abundance as lavender. Once established, Coleus caninus tolerates drought and is easy to grow, needing little attention apart from pruning stems that become straggly (wear gloves, as pruning releases the plants’ unpleasant smell).

Plant Coleus caninus in borders or pots – the advantage of growing in containers is being able to readily move plants under cover for the winter to a frost-free place. A space-saving alternative is to take cuttings from mid- to late-summer, pot individually into small pots, and overwinter on a windowsill.