Answer: Clematis usually require about three years to become fully established and begin to bloom their best. They will grow best in full sun or at least a half a day of direct full sun. (In too shady a location they may not bloom very well.)
Their roots should be well mulched year round. This helps keep the soil evenly moist (damp not sopping wet) which is what they prefer.
Topdressing with compost once or twice a year will help feed the soil, as will using an organic mulch. You could also use a general purpose granular or slow release fertilizer with an analysis of 10-10-10 or similar proportions; read and follow the label directions for how to apply it.
Deadheading will not harm the plant but with a full grown vine can be a little bit impractical. Correct pruning can help maximize bloom. Here is a general guide to clematis pruning and care you may find helpful.
Enjoy your clematis this year!
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