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).
Alter the fertilizer if your plant is not blooming. If 'Limelight' does not bloom or blooms very little, give it fertilizer with a 10-30-10 ratio the following spring. The middle number represents the amount of phosphorus in the fertilizer.Phosphorus promotes better flowering.. Reduce the amount of watering you do as your hydrangea grows. After the first year, water 'Limelight' once per week, giving it 3 to 6 gallons (11.4 to 22.7 L) or 1 to 2 inches (2.5 to 5.1 cm) of water each time, depending on how quickly the soil dries.