How to Prune Coleus
When is the best time to prune?
Coleus grows actively in warm weather, so your pruning window depends on when temperatures stay consistently above 60°F in your region.
Why Should I Prune My Coleus?
Coleus is grown for its colorful leaves, not its flowers. When a coleus sends up flower spikes, it puts its energy into blooming and the foliage starts to fade and thin out. Pinching off those flower spikes as soon as you see them keeps the plant focused on producing the bright leaves you want.
Without regular pinching, coleus tends to grow tall and leggy with long gaps between leaves. By snipping or pinching the stem tips just above a pair of leaves, you force the plant to split into two new branches at that point. Do this a few times through the season and you end up with a full, bushy plant instead of a lanky one.
The best time to start is when the plant has at least three or four sets of leaves. Pinch the top set, wait for two new shoots to grow in, then pinch those. Indoor coleus can be pruned year-round since they stay in warm conditions. Outdoor plants should only be pruned during active growth.
Coleus is very forgiving. Even if you cut it back hard, it bounces right back as long as the roots are healthy and the weather is warm. Save the cuttings and stick them in water or moist soil. They root easily and give you new plants for free.