Genus guide
Ilex — 10 species
Ilex, the holly genus, encompasses several hundred evergreen and deciduous shrubs and trees ranging from compact hedging cultivars such as Helleri, Hoogendorn, and Compacta to upright screening forms like Steeds Japanese Holly. They perform best in full sun to partial shade and prefer consistently moist, well-drained, slightly acidic soil; water young plants regularly until established, then reduce frequency. All Ilex species are toxic to cats and dogs — the berries and leaves contain saponins that cause vomiting, diarrhea, and depression, so keep them out of reach of pets.
All Ilex species we cover
- American Holly
- Blue Holly 'Blue Princess'
- Blue Prince Holly
- Blue Princess Holly
- Compacta Holly
- Helleri Holly
- Hoogendorn Holly
- Japanese Holly 'Sky Pencil'
- Steeds Japanese Holly
- Winterberry Holly 'Winter Red'
Ilex — frequently asked questions
Are Ilex plants toxic to cats and dogs?
Most Ilex are not pet-safe. Of the 10 Ilex species in the Growli library, 10 (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 Ilex plants need?
Most Ilex do best in direct sun. 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 Ilex easy to care for?
Some Ilex suit more experienced growers — several want strong light, sharp drainage or a specific seasonal rhythm. Check the individual species page for the exact regime.
How many Ilex varieties are there?
Growli's care library covers 10 Ilex species and varieties — browse them all above. They share a similar light, water and soil pattern, so once you learn one Ilex, the rest follow closely.
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