Description
Ornemental ivy – Hedera helix ‘Crispa’
In a nutshell
The ornamental ivy, Hedera helix ‘Crispa’, is a compact ivy that resembles ‘Parsley Crested’.
But the leaves are larger and flatter, less crimped and less wavy. The number of lobes ranges from 0 to 5, most often 3, with shallow sinuses. The base of the leaves is heart-shaped. Normally medium green in color, the leaves can take on reddish hues in cold weather.
The stems are long and sparsely branched, giving it a rather loose habit. This ivy is equally suited to sun or shade.
History
This cultivar is of unknown origin.
Technical leaflet - Hedera helix 'Crispa'
Botanical information
- Family: Araliaceae
- Genus : Hedera
- Species: helix
- Cultivar: ‘Crispa’
- Pierot classification: curly-leaved ivy
- Foliage stage: juvenile
- Species origin: Europe, from Spain to Norway, but little on the Atlantic coast.
- Origin of cultivar: unknown
Description of Hedera helix ‘Crispa’
- Growth habit: fairly loose
- Number of lobes: 0 to 5 lobes, usually 3
- Leaf length: 4 cm
- Sheet width: 4 cm
- Leaf color: medium green
- Color of veins: green
- Leaf shape: rather rounded, shallow sinuses
- Stem and petiole color: red
- Hairs: stellate, 3 to 5 branches
Planting, growing and care instructions for Hedera helix ‘Crispa’
- Exposure: shade, part shade, sun
- Hardiness: -12°C
- Soil moisture: cool soil
- Soil PH: neutral or calcareous
- Soil type: all
- Soil richness: ordinary or humus-bearing
- Use: ground cover, climber, pot, jardiniere, hanging plant, houseplant
- Development: rapid
- Pruning: once a year
- Pests: very rare (red spider mites, scale insects)
- Diseases: very rare (leaf spots)

A page from my little ivy encyclopedia
The question of circumstance ...
What is the sinus of a leaf?
Ivy leaves are usually lobed, i.e. with a more or less divided blade. The number of lobes is generally three to five. The indentation between each lobe is botanically called the sinus.
Sinuses can be more or less deep. They may form an obtuse or acute angle, or be more or less rounded. Sometimes they are very shallow, almost flat.

Ivy in literature
“The ivy stretched out its green arms, hiding the wounds of the old manor.”
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