Answer: Yes, you can root tip cuttings. Your coleus will benefit from being cut back, this will stimulate branching. Then you can root the cuttings. Coleus roots very easily so you would not need to use rooting hormone. However, rooting hormone liquid or powder (eg Rootone brand) is sold at most garden centers. You can make a form of it yourself by soaking cut up willow twigs in plain water. Here are directions for rooting tip cuttings from plants such as coleus. You may need to cut and paste the complete url into your browser to make it work correctly.
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