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Cut your fuchsias back so they are contained in their area. Any plants that crowd together will compete for sunlight and resources, making them grow less efficiently. The end of each new branch will continue to grow outwards if left on your fuchsia. Make your cut above the knobby spots on the stem where leaves grow on the stem, otherwise known as a node. Flowering will be delayed until later in the season, but your fuchsia will produce more flowers for a longer amount of time. Long branches will get heavy with leaves and flowers and could break under strong winds. Leaf nodes will split into 2 or 3 individual branches that produce more flowers when they're cut back. Count up from the main stem to the second or third node with 2 leaves and make your cut. The leaves on each node will grow on the opposite side of one another. This makes new branches spread out. Remove any spindly branches growing inside the shrub. This helps the air flow through the plant and prevents fungal disease. Keep hedges clean and shaped. Use a larger pair of hedge shears to cut a large area in a short amount of time.

Summary:
Remove any branches that interfere with other plants. Prune the growing tip on stems to promote branching. Cut above nodes that have 2 leaves. Trim fuchsia hedges to a uniform height and width.