Species · genus Begonia · Begoniaceae

Hardy Begonia

Begonia grandis Dryand.

Growth habit

tuberous geophyte

Native range

China North-Central, China South-Central, China Southeast

Reference · B. grandis

Cultivars of B. grandis

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

No named cultivars catalogued under B. grandis 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.

Begonia grandis is a tuberous geophyte from the temperate woodlands of central and southern China, where it grows in dappled shade and dies back to its tuber over winter. Give it bright indirect light and water when the top inch of mix has dried, easing off as the leaves yellow and the plant goes dormant, since the stored tuber rots if kept wet while resting. Sharp drainage and moderate room humidity suit it best.

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

Light

Bright, indirect

Water

≈ every 10 days

Humidity

Medium

Temperature

5–27 °C

Soil mix

Rich, well-draining loamy mix

Propagation

Bulbils, tubers, or division

Fertilizing

Balanced feed monthly during the growing season

Growth rate

Moderate

Flowering

Pink flowers in late summer and autumn

ToxicityAuthoritative · species

Toxic to cats & dogs

Soluble calcium oxalates — mouth irritation, vomiting; tubers most toxic. 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 5-10d) · ai:claude-fable-5 · ASPCA

Kept true by its growers

Every fact here carries its source. Grow Hardy Begonia 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.