Named after Euphorbus, physician to the king of Mauritania, this robust, sun-loving genus includes the familiar Poinsettia and is over 1600 species strong. Most Euphorbia have a poisonous milky sap and soft-colored bracts that surround subtly defined flowers. Autumn watches many of their narrow green leaves turn shades of red, orange and yellow.
Honoring plantsman Kent Copton, who developed both a garden and a nursery in Faversham, England, this well-groomed shrubby Euphorbia produces finely hewn cool bluish green foliage and billowing masses of lime-green flowers in an endless summer procession. Compared to E. ‘Dean’s Hybrid’ or E. ‘Blue Haze’, its needle-like linear leaves are longer, while its larger semievergreen mound surpasses E. ‘Limewall’s. For a lovely floral pairing, ‘Copton Ash’ can be planted with Geranium sanguineum var. lancastriense along a pathway, amidst rock work or in a planter.
Size: 2' 0" high x 2' 0" wide.
Hardy to zone 7.
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Other selections in this genus:
- Euphorbia amygaloides ‘Ruby Glow’
- Euphorbia ‘Blue Haze’
- Euphorbia ‘Canyon Gold’
- Euphorbia characias ssp. wulfenii
- Euphorbia characias ‘Bruce’s Dwarf’
- Euphorbia characias ssp. wulfenii ssp. wulfenii ‘John Tomlinson’
- Euphorbia characias ssp. wulfenii ‘Lambrook Gold’
- Euphorbia characias ‘Red Wing’
- Euphorbia ‘Dean’s Hybrid’
- Euphorbia donii (Dixter Form)
- Euphorbia ‘Excalibur’
- Euphorbia griffithii ‘Fern Cottage’
- Euphorbia griffithii ‘Fireglow’
- Euphorbia griffithii ‘Great Dixter’
- Euphorbia ‘Helen Robinson’
- Euphorbia ‘Jade Dragon’
- Euphorbia ‘Limewall’
- Euphorbia longifolia
- Euphorbia mellifera
- Euphorbia myrsinites
- Euphorbia polychroma ‘Candy’
- Euphorbia rigida
- Euphorbia sikkimensis