PLANTING IN CONTAINERS
Many varieties of clematis are suitable for planting in containers. In order to get good results and maximum flowers, compact varieties should be chosen. (Maximum height 12ft.) Good feeding and plenty of water is essential to maintain the condition of the plant and prolong flowering. With a little bit of perseverance you can achieve wonderful results. Terracota, stone, concrete or wood containers may be used, avoid plastic as they will get too hot for the roots in summer. To get the best results a large pot should be used (approx 18" deep x 18" in diameter.) Smaller ones can be used but only in the short term. Your container needs good drainage, this can be achieved by placing 2-3" of gravel in the bottom. We recommend the rest of the pot to be filled with John Innes No 3. When planting the clematis, 5" of the stem needs to be buried.The roots must be shaded by planting something around the top or covering with stone.
ONCE PLANTED KEEP WELL WATERED & FED.
If after a few years your plant becomes root bound you can try root pruning. To achieve this, tip it out of the pot when it is dormant and gently cut approx 3" of the root away. Re-pot into fresh compost and add three to four controlled release fertilizer tablets.