My plants outside are growing too tall with really tall stems.

Question

Growing from stem so hard to trim

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Answer 1

Are you referring to the coleus bloomstocks? You can just pinch those off; they don't need to be cut. In fact when they first start coming up you can pinch them off before they get so tall. You can pinch the foliage back to and it will get bushier.

https://www.gardeningknowhow.com/ornamental/foliage/coleus/coleus-plant-care.htm