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Zantedeschia pentlandii
Species; tuberous calla lily
At‑a‑glance
- Group/Class: Species; tuberous calla lily
- Height × spread: 16 to 24 in (40 to 60 cm) × 12 to 18 in (30 to 45 cm)
- Bloom window: Early summer to midsummer
- Color & flower form: Lemon to bright yellow spathe with a purple basal blotch; funnel form
- 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
- Pet safety: Avoid
How it differs
- Needs full sun for best flowering.
- Yellow spathe often shows a contrasting purple throat.
- Less tolerant of wet soils than white arum forms.
- Compact stature suits pots and rock garden edges.
Strengths
- Bright color reads well at distance.
- Performs in sunny and well drained sites.
- Useful in containers and as a cut.
Care in one minute
Site: full sun; provide light afternoon shade only in very hot regions.
Soil: gritty and well drained mixes; avoid heavy clay and standing water.
Watering: water regularly in growth but let the top of the mix dry slightly between waterings.
Feeding: light monthly fertilizer during active growth.
Grooming: remove spent spathes and tidy leaves.
Overwintering: lift and store dry at 50 to 55°F (10 to 13°C) outside zone 8 to 10.
Watch‑outs
- Soft rot in cold and wet soils; avoid overwatering.
- Frost sensitive; lift and store before freezes.
- Purchase nursery propagated plants to avoid pressure on wild populations.
Best uses (tags)
Provenance note
Endemic to South Africa. The species is documented by SANBI and World Flora Online.
References
- SANBI: Red List: Zantedeschia pentlandii
- NC State Extension: Zantedeschia pentlandii
- World Flora Online: Zantedeschia pentlandii
- ASPCA: Calla lily toxicity
