Description
Ornamental ivy - Hedera helix ‘Pittsburgh’
In a nutshell
Ornamental ivy, Hedera helix ‘Pittsburgh’, is the father of a large number of branched cultivars.
The leaves have the appearance of typical ivy, with 3 to 5 more or less pointed lobes. But what makes it special is the fact that the internodes are very short and, above all, the stems are stiff and branch easily. All this gives this ivy a shrubby appearance, or more accurately, the appearance of a mound of multiple short stems. The base of the leaves is cordate. The blade is medium green.
It is a very good ground cover plant, forming thick carpets. It grows moderately fast, with shoots no longer than 50 cm a year.
History
This cultivar was discovered by Paul Randolph, Verona, Pennsylvania, USA in the late 1910s.
Detailed sheet - Hedera helix 'Pittsburgh'
Botanical information
- Family: Araliaceae
- Genre : Hedera
- Species : helix
- Cultivar: ‘Pittsburgh’
- Pierot classification: ivy type
- Foliage stage: juvenile
- Origin of the species: Europe, from Spain to Norway, but little on the Atlantic coast.
- Origin of cultivar: discovered by Paul Randolph, Verona, Pennsylvania, USA in the late 1910s.
Description of Hedera helix ‘Pittsburgh’
- Growth habit: mound, clump
- Number of lobes: 3 to 5 lobes in general
- Leaf length: 3 to 4 cm
- Leaf width: 3 to 4 cm
- Leaf colour: green
- Colour of veins: light green
- Colour of stem and petiole: purplish green
- Branches: well branched
- Internodes: 1 to 2 cm
- Hairs: stellate, 3 to 5 branches
Planting, growing and care instructions for Hedera helix ‘Pittsburgh’
- Exposure: shade, part shade, sun
- Hardiness: -15°C
- Soil moisture: cool soil
- Soil PH: neutral or chalky
- Soil type: all
- Soil richness: ordinary or humus-bearing
- Use: ground cover, pots, window boxes, hanging baskets
- Development: moderately rapid
- Pruning: once a year
- Pests: very rare (spider mites, mealy bugs)
- Diseases: very rare (leaf spots)
Ivy in literature
“The old stones were slowly covered in ivy, accepting their fate.”





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