panicle hydrangea

Panicle hydrangeas should be watered regularly to keep their soil moist, but not soggy. Depending on the season, they should be watered at least every 7-10 days, adding supplemental watering if there is not enough natural rainfall. If the weather is unusually dry and hot, you may need to water twice per week. Additionally, make sure not to water the foliage of the plant, but instead only water at the soil level.

Panicle hydrangeas require 6 - 8 hours of sunlight a day to stay healthy and bloom properly. In warmer climates, they may require more shade and be more difficult to grow. The best time of day for optimum sunlight is early morning until late afternoon. The sunlight should be bright and not too direct, so that it does not cause the leaves to burn. If the plant is placed in direct sunlight during the hottest times of the day, partial shade is advised.

For the panicle hydrangea (Hydrangea paniculata 'Rendia' DIAMOND ROUGE), pruning should take place each year in late winter or early spring, just before the active period of new growth begins. Prune back the shrub by 1-third to 1-half, removing any dead, diseased or damaged branches, as well as conflicting branches which may cross or rub against each other. Removing 1 to 2 of the oldest branches at ground level will help stimulate growth in the center of the shrub. Additionally, tip pruning may be done each year to help promote fullness and health. This involves cutting back the terminal buds on each branch by 1-third to 1-half, thereby encouraging fuller growth.