Description
Irish ivy - Hedera hibernica ‘Hamilton’
In a nutshell
Irish ivy, Hedera hibernica ‘Hamilton‘has smaller foliage than the typical species. The leaves have 5 ogival lobes, well separated from each other. The leaf margins are slightly thicker and curved at the sinuses. The base lobes are very small, often measuring less than a third of the lateral lobes.
The leaf blade is a shiny mid-green, veined, but much less so than in the type species.
This vigorous ivy makes a good climber.
History
This cultivar was introduced by Hazel Key of Fibrex Nurseries in the 1970s.
Technical details - Hedera hibernica 'Hamilton'
Botanical information
- Family: Araliaceae
- Genre : Hedera
- Species : hibernica
- Cultivar: ‘Hamilton’
- Pierot classification: ivy type
- Foliage stage: juvenile
- Origin of the species: Europe, Atlantic coast, from Portugal to Scotland
- Origin of cultivar: introduced in the 1970s by Hazel Key of Fibrex Nurseries, United Kingdom
Description of Hedera hibernica ‘Hamilton’
- Growth habit: spreading
- Number of lobes: 5 lobes in general, ogive-shaped
- Leaf length: 6 cm
- Sheet width: 5 cm
- Colour of leaf: medium green
- Colour of veins: light green
- Stem: well-branched
- Internodes: 3 to 5 cm
- Colour of stem and petiole: green
- Hair: stellate, small
Planting, cultivation and care instructions for Hedera hibernica ‘Hamilton’
- Exposure: shade, part shade, sun
- Hardiness: -15°C
- Soil moisture: cool soil
- Soil PH: neutral, calcareous or acidic
- Soil type: all
- Soil richness: ordinary or humus-bearing
- Use: ground cover, climber, pot, window box
- Development: vigorous
- Pruning: once a year
- Pests: very rare (spider mites, mealy bugs)
- Diseases: very rare (leaf spots)
A page from my little ivy encyclopaedia
The occasional question ...
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 or indentation between each lobe is botanically called the sinus.
The sinus can be more or less deep. They may form an obtuse or acute angle, but they may also be more or less rounded. Sometimes they are very shallow, almost flat.
Ivy in literature
“In this abode of ivy and shadows, they had found their final refuge.”






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