Species · genus Zantedeschia · Araceae

Pink Arum

Zantedeschia rehmannii Engl.

Also known as: Pink Calla · Red Calla · Purple Arum · Red Arum

Growth habit

tuberous geophyte

Native range

Eswatini, Free State, KwaZulu-Natal, Mozambique, Northern Provinces

Reference · Z. rehmannii

Cultivars of Z. rehmannii

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

No named cultivars catalogued under Z. rehmannii 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.

Zantedeschia rehmannii is a tuberous geophyte from summer-rainfall regions of southern Africa, storing water in its tuber and prone to rot if kept wet. Give it bright indirect light and let the top inch or two of mix approach dryness before watering deeply; through dormancy it wants far less water, often none. Use a free-draining mix and avoid standing water around the tuber.

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

Bright, indirect

Water

≈ every 14 days

Humidity

Medium

Temperature

13–26 °C

Soil mix

Well-draining, humus-rich potting mix

Propagation

Division of tubers during dormancy

Fertilizing

Balanced liquid feed monthly during the growing season

Growth rate

Moderate

Flowering

Pink to rose spathes in summer; a dry dormancy period encourages reblooming

ToxicityAuthoritative · species

Toxic to cats & dogs & humans

Araceae family contains insoluble calcium oxalate crystals, which irritate mouth and digestive tract 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 Pink Arum 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.