Hydrangea planting distance depends on the variety and mature size of the plant, but general guidelines are as follows:
- Most hydrangeas should be spaced at least 1.5 meters (about 5 feet) apart to allow for proper growth and airflow
- For varieties that grow about 4-6 feet wide at maturity, such as Hydrangea macrophylla 'Nikko Blue' or Hydrangea arborescens 'Annabelle', plant them about 6 feet apart
- Larger varieties like Hydrangea paniculata 'Limelight', which can reach 6-8 feet wide, should be spaced about 8 feet apart
- Smaller varieties, such as Hydrangea quercifolia 'Pee Wee' (3 feet wide), can be planted about 4 feet apart, and very compact types like Hydrangea serrata 'Tiny Tuff Stuff' (2 feet wide) should be spaced around 3 feet apart
- When planting hydrangeas close to structures like a house, leave at least 2 feet of space from the foundation for varieties that grow 3-4 feet wide
- For hedges, spacing can range from about 3 to 5 feet apart depending on desired density and the mature width of the plants. For example, Incrediball hydrangeas (4-5 feet wide) are often spaced 4 feet apart for a continuous hedge or 5 feet apart for a more natural look
- Overall, a good rule of thumb is to leave about one foot of extra space beyond the mature width of the plant to ensure healthy growth and airflow
Spacing hydrangeas properly helps prevent overcrowding, which can reduce flowering and cause stress due to competition for water and nutrients
. Adjust spacing based on the specific variety's mature size and your garden layout.
