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Ugutugulu Whistlesweet

Thorncroftia lotteri

Thorncroftia lotteri is a small, semi-succulent herb or shrub from the rocky quartzite ridges of Mpumalanga, South Africa, and is listed as Vulnerable. It is a rare wild species rather than a common garden plant, so care advice is limited and the key is to protect its natural habitat.

Family
Lamiaceae (Mint family)
Light
Full sun
Water
Water sparingly, as a semi-succulent adapted to dry rocky sites; let the soil dry out between waterings.
Soil
Free-draining, gritty or rocky soil; it grows naturally on quartzite.
Temperature
Adapted to montane conditions at 1,000 to 1,400 m; tolerates cool nights, but protect from frost.
How easy
Hard
Native range
Mpumalanga
Climate
desert or dry shrubland

About

Thorncroftia lotteri is a species of Thorncroftia commonly known as the Ugutugulu whistlesweet. It is endemic to South Africa′s Mpumalanga province, where it grows at 1,000–1,400 m (3,300–4,600 ft) above sea level on rocky mountain tops and quartzite ridges in the Barberton area.

Range-restricted and threatened by forestry operations and informal mining, it is listed as Vulnerable by SANBI.

Other Thorncroftia plants

Pongola Whistlesweet · Longflower Whistlesweet · Wolkberg Whistlesweet · Blyde River Whistlesweet · Barberton Whistlesweet · Pipersages

Text excerpted from the Wikipedia article Thorncroftia lotteri by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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