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• Photo 6 of 13

Endless Summer Hydrangea (6 of 13)

Height: 3-6 feet; Width: 3-6 feet
Moist, but well-drained soil
Plant in partial shade; prune lightly as needed in summer.
Most cold tolerant H. macrophylla blooming on new and old wood
Hardy in USDA zones 4-9:
Zone 4: plant in spring to prevent winter heaving; water regularly in dry spells during growing season; apply extra mulch after first hard frost; avoid contact with salt; plant may bloom later in this zone than in warmer climates.
Zone 5: plant in spring to prevent winter heaving; water regularly in dry spells during growing season; apply mulch after first hard frost; avoid contact with salt; plant may bloom later in this zone than in warmer climates.
Zone 6: Plant in spring or very early fall; apply mulch after first hard frost; plant may delay blooming after late frosts; water regularly in dry spells during growing season.
Zone 7: Plant in early fall; apply mulch in fall; plant may delay blooming after late frosts; water regularly in dry spells during growing season.
Zone 8: Plant in early fall; water regularly in dry spells during growing season.
Zone 9: Plant in early fall; water regularly in dry spells during growing season.