Nepeta 'Woodlaw Night'
Originally introduced by Marshwood Gardens, this is one of my favourites as it has quite solid flower stems, which hold up well in all weather and the individual flowers are a good deep purplish-blue. Flowers for most of the summer for me, especially if I remove any older flower stems. Reliable hardy perennial, needs a sunny spot. Flowering size approx. 40-50cm high x 40cm wide. 1.1 litre pot.