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Parodia ottonis subsp. horstii


Scientific Name

Parodia ottonis subsp. horstii (F.Ritter) Hofacker


Notocactus arechavaletae var. horstii, Notocactus horstii, Notocactus ottonis subsp. horstii, Parodia horstii, Peronocactus horstii, Peronocactus ottonis subsp. horstii, Wigginsia nothohorstii

Scientific Classification

Family: Cactaceae
Subfamily: Cactoideae
Tribe: Notocacteae
Genus: Parodia


Parodia ottonis subsp. horstii is a solitary or slowly clustering cactus with flattened or spherical stems that have 6 to 16 ribs. The stems are green with a crown covered in spiny white wool, up to 1 foot (30 cm) tall and up to 6 inches (15 cm) in diameter. Flowers are yellowish-orange, pink or violet-purple, up to 1.4 inches (3.5 cm) in diameter, and appear in early spring.

Parodia ottonis subsp. horstii

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USDA hardiness zones 9a to 11b: from 20 °F (−6.7 °C) to 50 °F (+10 °C).

How to Grow and Care

If you can grow cacti and succulents successfully, you can likely grow the popular Parodia without too much trouble. It is key to remember, however, that Parodias don't like direct sunlight and are accustomed to more even water than many other cacti species. The cactus mustn't be exposed to prolonged dampness and sitting water. Never let your cactus sit in a dish of water. To encourage better flowering, allow the plants to enjoy a cooling period in the winter and dramatically cut back watering. Unlike other cacti species, however, you don't need to stop watering entirely. Lastly, make sure to fertilize during the growing season for the best results.

Repot as needed, preferably during the warm season. To repot Parodia, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot.

Learn more at How to Grow and Care for Parodia.


Parodia ottonis subsp. horstii is native to Brazil (Rio Grande do Sul).


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