Deborah Hardwick

When I first started growing clematis plants and was learning about how to fertilize clematis, I learned about the N-P-K numbers found on plant fertilizer packages. N-P-K is short for Nitrogen, Phosphorus and Potassium. These are the primary components of plant fertilizer, and the numbers are always listed in N-P-K order. For example, the numbers 10-10-10 might be prominently listed on a fertilizer bag. The fertilizer numbers represent the percentages of each primary nutrient in the fertilizer. A 10-10-10 fertilizer contains 10% nitrogen, 10% phosphorus and 10% potassium. I learned that these numbers could be interpreted as Up, Down, All Around. Up referred to plant foliage Down referred to plant roots All Around meant plant vigor and strength As I became experienced in growing clematis, I gained a mentor in Holland named Ton Hannink. Ton is a retired clematis expert who now devotes his time to clematis breeding and collecting. Way before the “blossom booster” … [Read more...] about How to Fertilize Clematis (and other flowering plants)