Description
Ornemental ivy – Hedera helix ‘Knulch’
In a nutshell
The ornamental ivy, Hedera helix ‘Knülch’, is interesting for its atypical foliage. Its leaves are almost round and concave, more or less embossed.
The color of the leaves is light green, dark green when mature. It is self-ramifying with light purple stems. The internodes are short. The leaves have curved edges giving this cup shape.
It fears environments that are too humid, especially in winter. It is a good ground cover for small areas of the garden.
History
This cultivar was discovered by Brother Ingobert Heieck of Neuburg Monastery, Germany in 1977. It is a mutation of ‘Shamrock’.
Technical leaflet - Hedera helix 'Knulch'
Botanical information
- Family: Araliaceae
- Genus: Hedera
- Species: helix
- Cultivar: ‘Knülch’
- Pierot classification: fan-leaved ivy, curiosity ivy
- 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 by Brother Ingobert Heieck, from the monastery of Neuburg, Germany, in 1977
Description of Hedera helix 'Knulch'
- Shape: compact, spreading
- Number of lobes: unlobed, almost round leaves
- Leaf length: 4 cm
- Leaf width: 4 cm
- Leaf colour: light green to dark green
- Vein colour: light green
- Stem and petiole colour: purplish green
- Hairs: stellar, 3 to 5 branches
Tips for planting, growing and maintaining Hedera helix 'Knulch'
- 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, hanging baskets, pots, planters, houseplant, bonsai
- Development: moderate
- Pruning: once a year
- Pests: very rare (red spiders, scale insects)
- Diseases: very rare (spots on the leaves)
A page from my little ivy encyclopedia
The question of circumstance…
What is self-branching ivy?
Ivy can form long stems, like vines, on which leaves are attached, in an alternating arrangement. For some species of ivy, these stems are not branched, that is to say that no secondary branches come from these vines. We will then say that these ivies are not branched.
Conversely, for other species, many secondary branches come from the main stem, at the axils of the leaves. These ivies are called branched.
Ivy can be forced to form secondary branches by pruning it regularly. Those that form secondary branches without having to be pruned are called self-branching ivy. The most typical of these is the ‘Pittsburgh’ ivy (Hedera helix ‘Pittsburgh’).
Ivy in literature
“The ivy, like a faithful companion, covered everything, even the windows, as if to hide the decrepitude of the years.”








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