Species · genus Citrus · Rutaceae

Citron

Citrus medica L.

Growth habit

shrub or tree

Native range

Assam, Bangladesh, East Himalaya, Myanmar, Nepal, West Himalaya

Reference · C. medica

Cultivars of C. medica

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

No named cultivars catalogued under C. medica 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.

Citron is a citrus shrub or small tree from the foothills and lowlands of the eastern Himalaya, where it grows in warmth and strong light. Give it the brightest, sunniest spot you can — several hours of direct sun — and let the top inch or two of mix dry between waterings, since the roots resent sitting wet. Use a free-draining mix and ease off in winter when growth slows.

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 5-12d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Direct sun

Water

≈ every 12 days

Humidity

Medium

Temperature

15–30 °C

Soil mix

Sandy, well-draining slightly acidic citrus mix

Propagation

Cuttings or grafting

Fertilizing

Light, frequent citrus feed spring through autumn

Growth rate

Slow

Flowering

Purple-tinged fragrant blooms; knobbly aromatic fruit in warmth

ToxicityAuthoritative · species

Toxic to cats & dogs

Citrus — essential oils + psoralens; vomiting, diarrhoea, photosensitivity, dermatitis. 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 5-12d) · ai:claude-fable-5 · ASPCA

Kept true by its growers

Every fact here carries its source. Grow Citron 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.