Species · genus Euphorbia · Euphorbiaceae

Grassleaf Spurge

Euphorbia graminea Jacq.

Growth habit

annual

Native range

Argentina Northwest, Aruba, Belize, Bolivia, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, French Guiana, Guatemala, Honduras, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Netherlands Antilles, Nicaragua, Panamá, Peru, Suriname, Venezuela, Windward Is.

Reference · E. graminea

Cultivars of E. graminea

The named forms growers keep — each with its own page, each honest about how much we know.

No named cultivars catalogued under E. graminea 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.

Euphorbia graminea is an annual from seasonally dry regions across Mexico, Central America, the Caribbean, and South America, adapted to warmth and bright sun. Give it gritty, fast-draining mix and full light, and let the top inch or two of soil dry out before watering again. As an annual it completes its life cycle in a single season, so expect natural decline after flowering rather than a long-lived houseplant.

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 7-14d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Direct sun

Water

≈ every 14 days

Humidity

Low — average room

Temperature

13–29 °C

Soil mix

Light, well-draining potting mix

Propagation

Seed or soft stem cuttings

Fertilizing

Dilute balanced feed every two to three weeks while blooming

Growth rate

Fast

Flowering

Frothy mass of tiny white bracts, near year-round in light

ToxicityAuthoritative · species

Toxic to cats & dogs & humans

Euphorbiaceae produce an irritant milky latex that can harm skin, eyes, and mucous membranes if ingested. 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.

No reference gallery yet

A few clear photos — habit, a mature leaf, a flower if it blooms — would give this page its eyes.

Add images

Sources: ai:claude-opus-4-8 · ai:claude-opus-4-8 (range 7-14d) · ai:claude-fable-5 · ai:claude-opus-4-8 (family inference)

Kept true by its growers

Every fact here carries its source. Grow Grassleaf Spurge yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — is exactly what keeps this page honest. Contributions are reviewed before anything changes.