Ideally grow Euphorbia ground cover ground cover in full sun, though some varieties will tolerate partial shade . It will happily thrive in most soils so long as they are well-drained. Once established they are fully hardy and can tolerate periods of drought, in fact they prefer less fertile soil so we advise not to feed them. Be very careful and always wear gloves when pruning or handling Euphorbia as their stems release a milky sap that is highly toxic when ingested and can cause significant skin irritation (on the plus side, this makes them deer resistant!).
As a rough guide when planting Euphorbia as ground cover – 4 plants per square metre is adequate with a little patience, 6 will give better coverage, and 9-12 will make a weed supressing carpet very quickly.
How to grow Euphorbia
Position: Full sun
Foliage: Evergreen, semi-evergreen
Soil and site: Well-drained – almost any soil except overly fertile
Flowering time: Early Summer to Autumn
Growth rate: Moderate
Ultimate height and spread: Height from 20cm to 150cm, spread to 100cm depending on variety
Hardiness: Fully hardy once established
Aftercare: Trim back any damaged stems in early spring to keep the plant tidy and heathy – Clip carefully, new shoots will likely be emerging that you want to keep intact!