Although threadleaf Coreopsis plants are suitable for deadheading by pinching, the quantity of buds and their close proximity to one another on the stem can make pinching coreopsis a nightmare. With plants like this, you are better off waiting until the majority of buds have bloomed and then shearing the entire plant back by 1/2 to 2/3s. It won't take long at all for the plant to regroup and set more buds.


