Diamond Frost

Diamond Frost (Euphorbia hypericifolia)

Diamond Frost Euphorbia

Full sun to part shade; medium moisture, well-drained; tolerates heat and drought once established; pH 6.0–7.0.

12–18 inches tall and wide, mounding; blooms continuously from late spring through frost with tiny white bracts giving a misty, cloud-like appearance; does not set viable seed readily — propagated vegetatively.

Propagation: tip cuttings root easily under mist; treated as a frost-tender annual in Zone 6b — purchase transplants each spring.

Native region: Not native to Tennessee; ornamental introduction; the cultivar 'Inneuphdia' is a patented selection by Proven Winners.

In Middle Tennessee's humid summers, E. hypericifolia 'Diamond Frost' is notably more tolerant of heat and humidity than many white-flowered fillers, maintaining bloom from May through October without deadheading. The fine-textured foliage works as a filler in mixed containers and borders, pairing well with coarser-leaved tropicals. The milky latex sap causes skin and eye irritation — wear gloves when handling and avoid contact with cut stems. No significant pest or disease problems occur in normal landscape use. Unlike many euphorbias, this cultivar does not self-seed aggressively, making it low-maintenance relative to species-type euphorbias.