The short answer
Start here
Start by identifying the flower shape. Lacecap hydrangeas have flatter heads with a ring of larger showy florets around smaller central flowers; mopheads form fuller rounded heads; panicle hydrangeas carry cone-shaped clusters. The group changes the pruning advice, so do not cut first and identify later.
If your hydrangea has leaves but no flowers, check pruning timing and late frost before adding fertilizer. Its flower buds may have been cut off or damaged by cold. For routine care, aim for soil that holds moisture but drains, with light shade where strong afternoon sun dries it quickly.
- Lacecap clue
- Flatter head with showy outer florets
- Mophead clue
- Full, rounded flower head
- Root preference
- Moisture-retentive but drained soil
- Frequent mistake
- Hard pruning before identifying the group
Identify the flower group before changing care
1. Lacecap vs mophead hydrangea: check the flower head
Photograph the whole shrub, one complete flower head, several leaves on the stem and any nursery label. Lacecap and mophead forms are often Hydrangea macrophylla, but a common name or flower color alone is not enough to choose a pruning method.
2. Check the root zone before reacting to wilt
Hydrangeas can droop temporarily in strong heat. Feel the soil below the surface and compare the plant again in the cooler morning. If the root zone is dry, water thoroughly; if it is already wet, check drainage instead of adding more.
3. Lacecap and mophead pruning: protect the flower buds
For established mophead and lacecap hydrangeas, begin with the group, nursery label and live buds. They commonly flower from older stems, so cutting every stem down can remove that season’s flowers. A faded flower head is not a reason to cut to the base. Panicle and smooth hydrangeas need a different pruning approach; follow the RHS group-specific guide linked below.
4. Look for frost damage and deep shade
Blackened shoot tips or buds after a cold night suggest frost injury. A plant may grow new leaves without replacing that season’s flower buds. Also check whether deep shade or repeated drying reduced flowering before assuming the plant needs more feed.
Growing advice from the sources
Shrubby hydrangea: site and moisture
Shrubby hydrangeas favour moisture-retentive soil that still drains, with light shade often reducing drought stress. Established plants can still need water in hot dry periods, and spring mulch helps conserve moisture; exposed young growth may be damaged by late frost. Source: Royal Horticultural Society
Hydrangea: pruning depends on plant group
Hydrangea pruning is not one-size-fits-all: mophead and lacecap types generally need light mid-spring work because flowers arise from shoots on older stems, while panicle and smooth hydrangeas respond differently. Identify the hydrangea group before hard pruning, since the wrong approach can remove a season's flowers. Source: Royal Horticultural Society
Match moisture, shade and exposure to this hydrangea
The same hydrangea can behave differently by group and site. Light shade can reduce drought stress, while very dry soil, intense afternoon sun and cold wind can damage leaves or flower buds. Containers dry faster but can also stay saturated inside an outer pot, so judge moisture through the full root zone rather than using a fixed watering schedule.
What not to do first
- Do not identify a hydrangea group from flower color alone.
- Do not copy a pruning video until you know the hydrangea group.
- Do not force flowering with extra feed before checking light, frost and pruning.
- Do not interpret every midday wilt as a need for daily watering.
Sources and review
Garden Sage paraphrased these plant notes and checked them against the horticultural sources linked below. They have not been reviewed by a botanist. Read our editorial standards.