Growing in pots
Growing a late large-flowered clematis in a container will bring versatility to your patio or terrace. In order to give your clematis the best chance, it’s important to choose a large container, which is at least 45cm deep and across, as clematis develop an extensive root system. Thin plastic pots heat up too much in summer, so a wooden half-barrel or a thick concrete container is better. Make sure it’s well drained and stand it on pot feet. Fill your container with a soil-based potting compost such as John Innes No. 2, and add supports or position it somewhere the plant can be supported, such as in front of a trellis or frame. Plant deeply and water thoroughly – never let the plant dry out.