Answer: It's easier to keep geraniums compact by regularly pinching out the stem tips than it is to renovate one. But, it can be done. Cut the stems back to just above a node (leaf scar) and new growth will develop at the node. Your plant won't look very attractive for a few weeks until the new growth is produced. You can start new plants by rooting the stems you've just pruned off. Break or cut just below a node and set the cutting in moist potting soil. Roots will develop at the node. Use small pieces of the stem - 3-4" is all you need.
Best wishes with your geraniums!
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