Description
Ornemental ivy – Hedera helix ‘Shannon’
In a nutshell
The ornamental ivy, Hedera helix ‘Shannon’, has foliage composed of 3 to 5 deeply divided lobes, to the point that they could be mistaken for leaflets. The base of the lobes is sometimes slightly pinched.
Overall, it is an ivy in the same spirit as ‘Shamrock’, from which it comes. But the lobes are longer and wider. The stems are much larger, the internodes longer.
It is a good climber with thin foliage. The center of the leaf turns red at the point of intersection with the petiole that supports it, in winter.
History
This cultivar is a sport of ‘Shamrock’ discovered around 1968. It appears in the catalogue of The Alestake nursery, USA in 1970. It was described by Suzanne Pierot in 1974.
Technical leaflet - Hedera helix 'Shannon'
Botanical information
- Family: Araliaceae
- Genus: Hedera
- Species: helix
- Cultivar: ‘Shannon’
- Pierot classification: ivy with bird’s foot leaves
- Foliage stage: juvenile
- Origin of the species: Europe, from Spain to Norway, but little on the Atlantic coast.
- Origin of the cultivar: sport of ‘Shamrock’ discovered around 1968
Description of Hedera helix 'Shannon'
- Description of Hedera helix ‘Shannon’
- Shape: spread, scattered
- Number of lobes: 3 to 5 narrow lobes in general
- Leaf length: 5 cm
- Leaf width: 4 cm
- Leaf colour: medium green to dark green
- Vein colour: light green
- Stem and petiole colour: brown
- Hairs: stellar, 3 to 5 branches
Tips for planting, growing and maintaining Hedera helix 'Shannon'
- Exposure: shade, partial shade, sun
- Hardiness: -15°C
- Soil moisture: fresh soil
- Soil pH: neutral or calcareous
- Soil type: all
- Soil richness: ordinary or humus-rich
- Use: ground cover, climbing, hanging basket, pots, planters
- Development: moderate
- Pruning: once a year
- Pests: very rare (red spiders, scale insects)
- Diseases: very rare (spots on the leaves)

Ivy in literature
“Like ivy, despair wrapped itself around me, choking out every light of hope.”
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