Description
Japanese ivy – Hedera rhombea ‘Pierot’
In a nutshell
Japanese ivy, Hedera rhombea ‘Pierot’, is a small ivy with dark green, paper-thin leaves. In winter, in cold conditions, they are often tinged with brown.
They are fairly widely spaced and attached by long petioles to rather stiff stems.
Madame Pierot was the founder and president of the American Ivy Association.
History
Japanese ivy, Hedera rhombea ‘Pierot’, was discovered on Jeju-do Island, South Korea, in 1975.
Technical leaflet - Hedera rhombea ivy
Botanical information
- Family: Araliaceae
- Genus : Hedera
- Species: rhombea
- Cultivar: ‘Pierot’
- Pierot classification: miniature ivy, type ivy
- Foliage stage: juvenile
- Species origin: East Asia
- Origin of cultivar: found on Jeju-do island in South Korea in 1975
Description of Hedera rhombea ‘Pierot’
- Harbour: scattered
- Number of lobes: usually 3 lobes
- Leaf length: 2 cm
- Sheet width: 4 cm
- Leaf color: medium green
- Color of veins: light green
- Stem and petiole color: brown to green
- Hairs: scaly, 10 to 18 rounded branches
Planting, growing and care instructions for Hedera rhombea ‘Pierot’
- Exposure: shade, part shade
- Hardiness: -12°C
- Soil moisture: cool soil
- Soil PH: all
- Soil type: all
- Soil richness: ordinary or humus-bearing
- Use: ground cover, climber
- Development: moderate
- Pruning: once a year
- Pests: very rare (red spider mites, scale insects)
- Diseases: very rare (leaf spots)

A page from my little ivy encyclopedia
All your questions about ivy
Is ivy good for biodiversity?
Ivy is very useful for biodiversity. But it can also have a negative impact under certain conditions.
Ivy is highly competitive. It can cover large areas, to the detriment of other local native plants and the animals that depend on them. It must therefore be controlled and used wisely.
In addition, ivy has many positive impacts on biodiversity:
- It provides habitat and shelter. Its evergreen foliage offers excellent protection against the elements and predators. Many insects, birds and mammals are happy to lodge here. In winter, its thick foliage provides a welcome winter refuge.
- It provides food. Ivy flowers, which appear late in the season (often in autumn), provide an important source of nectar for bees and other pollinating insects at a time when few plants are flowering. Ivy berries, which ripen in winter, are also a source of food for many birds.

Ivy in literature
“Ivy had invaded the facade, making the house come alive in its solitude.”
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