Species · genus Euphorbia · Euphorbiaceae

Balkan Spurge

Euphorbia oblongata Griseb.

Also known as: Egg-leaf Spurge · Eggleaf Spurge · Oblong Spurge

Growth habit

perennial

Native range

Albania, Bulgaria, East Aegean Is., Greece, Kriti, NW. Balkan Pen., Türkiye, Türkiye-in-Europe

Reference · E. oblongata

Cultivars of E. oblongata

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

No named cultivars catalogued under E. oblongata 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 oblongata is a perennial spurge native to the eastern Mediterranean and Balkans, adapted to bright open ground and dry summers. Grow it in fast-draining, gritty mix and water only when the top two inches have dried fully, hedging toward the drier end since it resents sitting wet. It tolerates ordinary household humidity and does not need misting.

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 10-18d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Bright, indirect

Water

≈ every 18 days

Humidity

Low — average room

Temperature

10–27 °C

Soil mix

Well-draining loamy or sandy mix

Propagation

Seed, sown in spring

Fertilizing

Light feed in spring; undemanding

Growth rate

Moderate

Flowering

Clusters of small yellow-green bracts in late spring and summer

ToxicityAuthoritative · species

Toxic to cats & dogs & humans

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

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 10-18d) · ai:claude-fable-5 · ai:claude-opus-4-8 (family inference)

Kept true by its growers

Every fact here carries its source. Grow Balkan 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.