Botanical Name: Euphorbia hypericifolia ‘Diamond Frost’ Common Name: Euphorbia, Spurge Hardiness Zone: Annual in Most Climates; Perennial in Warm Regions (USDA Zones 10–11) Size: 12–18" Tall × 12–18" Spread Growth Habit: Airy, Mounding, Well-Branched Habit Sunlight: Full Sun to Partial Shade Soil: Well-Drained Soil; Adapts to Average Garden Soil Water Needs: Low to Moderate; Drought Tolerant Once Established Bloom Season: Late Spring through Frost Fertilizer: Minimal; Avoid Excess Fertility Features: Clouds of Tiny White Flowers, Fine Texture, Exceptional Heat Tolerance, Continuous Blooming Uses: Containers, Hanging Baskets, Borders, Mass Plantings, Filler Plant

Patent: ✔ Patented Propagation: ❌ Propagation Prohibited Without License

More About Euphorbia ‘Diamond Frost’

Euphorbia ‘Diamond Frost’ is one of the most popular annuals ever introduced, prized for its airy clouds of tiny white flowers that appear nonstop from late spring until frost. Rather than producing showy individual blooms, this plant creates a soft, mist-like effect that weaves seamlessly through mixed plantings.

The fine, branching habit gives it a light, floating appearance, making it an ideal filler plant that adds brightness without overpowering surrounding colors. It pairs equally well with bold, colorful flowers and subtle pastel palettes.

Why We Like It (Our Trials)

In our trials, ‘Diamond Frost’ has been exceptionally reliable through heat, humidity, and dry spells. It blooms continuously without deadheading, maintains a clean shape, and resists most pests and diseases.

We especially appreciate its versatility. It works beautifully in containers, hanging baskets, borders, and mass plantings, often improving the look of everything planted around it. Few plants are as forgiving or as consistently attractive across such a wide range of conditions.

Euphorbia ‘Diamond Frost’ vs. Other Euphorbia

Compared to perennial euphorbias like ‘Blackbird’ or ‘Ascot Rainbow’, ‘Diamond Frost’ is grown primarily as an annual filler, offering season-long bloom rather than spring structure. It plays a very different but equally valuable role in garden design.

When compared to other filler plants, ‘Diamond Frost’ stands out for its heat tolerance, nonstop flowering, and neutral white color that works with nearly any combination. For gardeners seeking a low-maintenance, long-blooming filler that performs all season, Euphorbia ‘Diamond Frost’ remains unmatched.