Euphorbia ‘Ascot Rainbow’ is looking quite dazzling in the garden this week, backed up by the silver foliage of Buddleia marrubifolia. The flowers on the euphorbia emerged for us on March 10, and now, nine weeks later still look amazing. The short-lived Euphorbia x martinii needs very good drainage in the garden. As soon as they fade, cut the flower stalks off so that the energy will go into producing new foliage. Hardiness Zone 6b-8b.
How short-lived is Euphorbia x martinii? I thought it was a perennial and that Euphorbia’s have a pretty long life span. Is “Ascot Rainbow” more of an annual in Raleigh area?
If you remove the flowers as soon as they are spent, you should be able to get 2-3 years life expectancy…assuming the drainage is excellent.