Zantedeschia rehmannii
Zantedeschia rehmannii is a pink calla lily with slender, spotless leaves and compact habit. It stands out for rose to magenta spathes that color well in summer heat. Plants perform best in warm summer regions and in containers that drain freely. It is commonly grown as a seasonal bulb in North America. Bloom typically occurs in midsummer and can continue with regular feeding and moisture. Leaves are narrow and upright which keeps the plant tidy in small spaces.
At‑a‑glance
- Group/Class: Species; tuberous calla lily
- Height × spread: 12 to 18 in (30 to 45 cm) × 12 to 18 in (30 to 45 cm)
- Bloom window: Midsummer
- Color & flower form: Pink to rose purple spathe with yellow spadix; slender funnel form; leaves usually unspotted
- Fragrance: 0 none
- USDA hardiness: Zones 8 to 10; grown as annual or lifted in colder zones
- Breeder / Year / Origin: Unknown, unknown, South Africa
- Cut‑flower notes: Medium stems; typical vase life 7 to 10 days when cut at open spathe stage
- Pet safety: Avoid
How it differs
- Shorter stature than many calla selections.
- Spotless and narrow leaves give a clean look.
- Colors well in steady summer warmth.
- Tuberous bulbs need sharply drained soils.
Strengths
- Compact habit for containers and small borders.
- Good stem production with even moisture and feeding.
- Useful as a cut when harvested at the proper stage.
Care in one minute
- Site: full sun to part shade; give afternoon shade where summers are very hot.
- Soil: fertile and well drained; slightly acidic to neutral pH.
- Watering: maintain even moisture in growth; reduce after foliage yellows for dormancy.
- Feeding: light monthly fertilizer during the growing season.
- Grooming: remove spent spathes and senescent leaves.
- Overwintering: lift before frost and store dry at 50 to 55°F (10 to 13°C).
Watch‑outs
- Soft rot can develop in cold or saturated media.
- Requires frost free storage; tubers do not tolerate freezing.
Best uses (tags)
containers, cutting, borders, warm patios
Provenance note
Native to eastern South Africa and Eswatini.
References
- Missouri Botanical Garden – Zantedeschia rehmannii
- NC State Extension – Zantedeschia profile
- ASPCA – Calla lily toxicity
Written by: Your Flowers Guide editorial team
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