Euphorbia 'Helen Robinson' (Helen Robinson Spurge)

Sun to Part SunZone: 7-8, at least 36" tall Origin: Hybrid

Open House/Web-Only! This splendid new euphorbia is a cross of E. robbiae x E. characias that occurred at Hyde Hall Garden in the UK, and was later named for its late owner. We have been very impressed by its garden performance, which resembles a E. robbiae on steroids. The 16" tall E. robbiae-like rosettes, which spread by underground runners, are topped starting in mid-April with 20" flower spikes of chartreuse yellow. In rich soils, the rate of spread may be a problem for wimpy plants growing nearby. Our 3-year-old clumps growing in sand have made an 8' wide patch. Dry soils and root competition slow it down to a crawl. Pot size: 24 fl. oz (709.77 ml)