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Solanum etuberosum

Solanum etuberosum
Photo: Sarah Anne Drake (1803-1857); J. Watts (?), Public domain

Solanum etuberosum is a wild potato relative from central Chile that, despite its name, does not form proper tubers. It is grown mainly for research and as an ornamental for its large, showy flowers.

Family
Solanaceae (Nightshade family)
Grows as
Bulb
Light
Full sun, Part shade
Water
Keep the soil evenly moist during the growing season and let the top layer dry slightly between waterings.
Soil
Well-drained, fertile garden soil or a loam-based potting mix.
Temperature
10-25 °C; protect from frost.
How easy
Easy
Safety
Toxic: Like other members of the potato family, the leaves, stems, and unripe fruit contain steroidal glycoalkaloids (such as solanine) that can cause nausea, vomiting, and more serious effects if eaten.. Toxic to cats and dogs (ASPCA).
Native range
C. & SC. Chile

About

Solanum etuberosum is a species of wild potato in the family Solanaceae, endemic to central Chile. Although it does not bear tubers (or has tubers that are little more than thickened rhizomes), it is still being extensively studied for its resistance to Potato virus Y, Potato leafroll virus, green peach aphids, and frost. Due to its large, showy flowers it may have some use as an ornamental.

According to a 2025 study by Zhang et al., a hybridization event some 9 million years ago between a member of the S. etuberosum lineage and a member of the tomato lineage may have made possible the emergence of tuberous potatoes. The proposed lineage includes S. etuberosum, S. palustre, and S. fernandezianum among other species.

Other Solanum plants

Dwarf Tamarillo · Solanum acaule · Sodaapple nightshade · Ethiopian nightshade · American black nightshade · Solanum arcanum · New Zealand nightshade · Solanum berthaultii · Tamarillo · Solanum brevicaule · Solanum cajanumense · Bitter Apple

Text excerpted from the Wikipedia article Solanum etuberosum 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.

Pet safety from the ASPCA toxic and non-toxic plant lists.

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