Prune clematis back to live wood on the main stem. On some varieties this may mean removing most of the plant.
In the greenhouse. It is necessary to pinch back such plants as snapdragon, petunia, heliotrope and lantana that are to be used for bedding purposes. Pinching will make them bushy and sturdy. Simply remove the top of the plant when it is soft and about 4 inches in height and it will be forced to break below the pinch.
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