Species · genus Euphorbia · Euphorbiaceae
Shore Spurge
Euphorbia glauca G.Forst.
Also known as: Sea Spurge · Waiu-atua
Cultivars of E. glauca
The named forms growers keep — each with its own page, each honest about how much we know.
No named cultivars catalogued under E. glauca yet. When growers document a stable, named form, it earns its own page here.
Guide
The species-level account. Cultivar pages build on this and say where they differ.
A Southern Spurge
Euphorbia glauca is a perennial member of the spurge family, Euphorbiaceae, belonging to a genus that spans annuals, perennials, shrubs and succulents united by milky sap and small flowers held in cupped, often colourful bracts. This particular species is recognised as a correct, accepted name in botanical records.
Source: RHS
Origins in the Pacific
This species was first described by G. Forster and published in 1786. Its native range lies across the Chatham Islands, Norfolk Island, and New Zealand, including its North and South Islands and Stewart Island. In the wild it grows primarily within a wet biome, reflecting its island origins.
Source: Kew
Family Traits
As a Euphorbia, this plant carries the family's hallmark milky sap and bears small true flowers nestled within cupped bracts that often provide the real colour display. It is classed as a perennial rather than an annual or woody shrub.
Source: RHS
Care recipe
The species record — the baseline every cultivar inherits unless it says otherwise.
Care notes are early — not yet verified
- Light
- ai:claude-opus-4-8
- Water
- ai:claude-opus-4-8 (range 10-21d)
- Humidity
- ai:claude-opus-4-8
- Soil
- ai:claude-fable-5
- Care
- ai:claude-fable-5
Bright, indirect
≈ every 21 days
Medium
8–26 °C
Sharp, gritty free-draining mix
Seed or cuttings
Light feed once or twice through summer
Slow
Green-yellow bracts; uncommon indoors
Toxic to cats & dogs & humans
Euphorbiaceae produce an irritant milky latex that can harm skin, eyes, and mucous membranes if cut or broken. This is where toxicity lives: every cultivar of this species inherits it and none can override it.
Reference images
Every image credited. Licenses link to their deeds.
Sources: ai:claude-opus-4-8 · ai:claude-opus-4-8 (range 10-21d) · ai:claude-fable-5 · ai:claude-opus-4-8 (family inference)
Kept true by its growers
Every fact here carries its source. Grow Shore Spurge yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — and a clear photo of your plant are exactly what keep this page honest. Contributions are reviewed before anything changes.
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