Genus guide
Hydrangea — 36 species
Part of the Hydrangeas & mock oranges family (Hydrangeaceae)
Hydrangea is a genus of deciduous and evergreen flowering shrubs loved for their large, mophead or panicle blooms. Most cultivars, including Endless Summer and Incrediball, thrive in morning sun with afternoon shade, though panicle types such as Vanilla Strawberry tolerate full sun. They prefer consistently moist, well-drained, organically rich soil and benefit from deep watering once a week, more frequently in heat. All Hydrangea species are toxic to cats and dogs; cyanogenic glycosides in the leaves, buds, and flowers can cause vomiting, depression, and diarrhea.
All Hydrangea species we cover
- Bigleaf Hydrangea 'Nikko Blue'
- Bluebird Mountain Hydrangea
- Climbing Hydrangea
- Hairy Hydrangea
- Hydrangea
- Hydrangea 'Annabelle'
- Hydrangea 'Annabelle'
- Hydrangea 'Blushing Bride'
- Hydrangea 'Bobo'
- Hydrangea 'Endless Summer'
- Hydrangea 'Endless Summer'
- Hydrangea 'Incrediball'
- Hydrangea 'Let's Dance Rhythmic Blue'
- Hydrangea 'Limelight'
- Hydrangea 'Limelight'
- Hydrangea 'Little Lime'
- Hydrangea 'Nikko Blue'
- Hydrangea 'Pee Gee'
- Hydrangea 'PeeWee'
- Hydrangea 'Pinky Winky'
- Hydrangea 'Quick Fire'
- Hydrangea 'Snowflake'
- Hydrangea 'Strawberry Sundae'
- Hydrangea 'Tardiva'
- Hydrangea 'Vanilla Strawberry'
- Hydrangea aspera 'Villosa'
- Lacecap Hydrangea
- Mophead Hydrangea 'Cityline Paris'
- Mountain Hydrangea 'Bluebird'
- Nikko Blue Bigleaf Hydrangea
- Oakleaf Hydrangea
- Oakleaf Hydrangea 'Snow Queen'
- Panicle Hydrangea 'Pinky Winky'
- Panicle Hydrangea 'Pinky Winky'
- Panicle Hydrangea 'Vanilla Strawberry'
- Smooth Hydrangea 'Incrediball'
Hydrangea — frequently asked questions
Are Hydrangea plants toxic to cats and dogs?
Most Hydrangea are not pet-safe. Of the 36 Hydrangea species in the Growli library, 36 (100%) carry a toxic or mildly-toxic ASPCA classification and 0 are pet-safe. Always confirm the exact species on its pet-safety page before trusting it around cats or dogs.
How much light do Hydrangea plants need?
Most Hydrangea do best in bright indirect light. If yours stretches toward the window or loses its variegation it wants more light; scorched or bleached leaves mean it is getting too much direct sun.
Are Hydrangea easy to care for?
Hydrangea are moderate to grow: the main requirement is a genuinely bright spot out of harsh midday sun. Get the light right and the rest of their care follows.
How many Hydrangea varieties are there?
Growli's care library covers 36 Hydrangea species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Hydrangea, the rest follow closely.
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