doublefile viburnum

Doublefile viburnum generally prefers moist soil, but can tolerate periods of drought. During the spring and summer, water the plant about once a week or when the soil is dry to a depth of 2 inches. Be careful not to overwater, as too much water can lead to root-rot and other fungal problems. During the fall and winter, reduce watering to every 2 to 3 weeks. When temperatures are below freezing, it is best to stop watering and wait until temperatures warm up.

Doublefile viburnum requires full sun to partial shade, meaning it thrives in part of the day with 4 to 6 hours of direct sunlight and the rest in indirect light. It should receive the most sunlight in the morning or in the afternoon, with a few hours of shade in between. When given too much shade, the plant will not grow at its full potential because it needs some sunlight to activate its photosynthesis process and use the sunlight to create the energy it needs to fuel its growth.

Doublefile viburnum is best pruned during the dormant season, usually between fall and late winter. Pruning may also be done in early spring before new growth has begun. To maintain the shrub's natural vase-shape, lightly prune the oldest branches, usually 1/3 of the oldest branches, by removing them at their base. Prune any broken, damaged, or diseased branches as soon as they are noticed. Additionally, when needed, prune the outside fascicles, or “vertical layers” of branches, to keep the shrub at its desired height. Pruning too much will negatively impact the flowering cycle and affect the overall look of the shrub. If a greater level of pruning is desired, it is best done over a number of years as opposed to all at once.