Can’t believe I’ve been doing this wrong this entire time

To fertilize your hydrangeas correctly, start by selecting a balanced, slow-release fertilizer with an N-P-K ratio of around 10-10-10. Apply the fertilizer in early spring, following the package instructions for the appropriate amount based on your plant’s size. Water the fertilizer in thoroughly to help it reach the roots. Consider a second application in mid-summer if your plants show signs of nutrient deficiency.

A balanced fertilization schedule involves regular applications of the right type of fertilizer at the right times. Begin in early spring with a slow-release granular fertilizer, and supplement with a liquid fertilizer every 4-6 weeks during the growing season if necessary. Always monitor your plants for signs of over-fertilization, such as burnt leaf edges or excessive leaf growth.