Needs deep retentive soil. Makes a large plant, spectacular all summer with great heads of gold-green bracts. Harmful if eaten. Skin and eye irritant.
Euphorbia palustris
Marsh spurge
Details
| Aspect | Full sun |
| Flower Colour | Yellow | Green |
| Flowering Period | May | Jun |
| Foliage | Not evergreen |
| Goes Well With | Aquilegia, Bergenia, Geranium |
| Growth Habit | Clump-forming |
| Hardiness | Fully hardy |
| Height | 1.2m |
| Soil | Rich and fertile |
| Spread | 60cm |
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I have several Euphorbia palustris in my prairie garden which have grown beyond 60 cms and are swamping other plants. When is the best time to cut them back for the benefit of companion planting as I don't want to lose these plants. Thank you.
In early to mid-spring cut back the previous year's flowering stems to within one or two buds of the older woody framework. Also remove any thin, weak or dead growth. Pruning as early in spring as possible will give the maximum growing period for the young shoots.