Root. In the computer world, root refers to the top-level directory of a file system. The word is derived from a tree root, since it represents the starting point of a hierarchical tree structure.
Use a fertilizer with high levels of phosphorus. Phosphorus helps to prevent aluminum from creeping into the system of the hydrangea. Choose a fertilizer close to the ratio of 25/10/10 (Phosphorus is the middle number).
Planting hydrangeas in the right location is extremely important. It can make the difference between growing a lush, lavishly blooming shrub and one that struggles and produces scrawny blooms. For information on choosing the right hydrangea for your climate (planting zone), see Choosing the Right Hydrangea. Plant at the same depth the hydrangea was planted in the pot. ( 2 see diagram below). 3  Plant in early summer or late fall. 4  Transplant a hydrangea when it has become dormant and lost all of its leaves (late fall or winter).