Answer: These will naturally grow upward and climb the fence, then grow and cascade along it horizontally once they reach the top. In a few years they will probably cover most of the fence without doing any special pruning. To encourage growth lower on the plant you would need to cut it back very hard, then trim it periodically as it regrows to encourage it to branch closer to the ground. Since you have five, you might try cutting two of them off very short and leave three to look nice this season, then cut the other three back next winter. I hope this helps.
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