Gymnocalycium horstii Buining

Gymnocalycium horstii is a globular cactus resembling a loaf of bread.
Still missing: plant type, natural habitat, height / growth form, flowering period, growth & dormancy period.
Sources (6)
- GBIF Backbone Taxonomy – Gymnocalycium horstii · Scientific name · CC BY 4.0
- GBIF – distributions (The World Checklist of Vascular Plants (WCVP); The IUCN Red List of Threatened Species; Flora e Funga do Brasil - Lista ) · Native distribution · CC BY 4.0
- Wikidata – Q290726 · CC0
- Wikimedia Commons – Gymnocalycium horstii 2.png · CC BY-SA 4.0
- Wikipedia (de) – Gymnocalycium horstii · CC BY-SA 4.0
- Wikipedia (en) – Gymnocalycium horstii · CC BY-SA 4.0
Automatic data comes from the open sources above, credited per their licences. Care experience is shown separately below.
Tips & experience from members
What worked for you? Your plant’s growing conditions are attached automatically, so others can see who it works for.
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How members water it
Not enough logs yet: at least 3 plants with regular watering logs are needed (now: 0). Waterings logged in Care feed this – anonymised and aggregated.
How it thrives
No monthly schedule is shown because cultivar-/species-level data is not yet sufficient. The general values above are guidance only.
Gymnocalycium tip: Unlike most cacti it dislikes harsh midday sun – bright filtered light is ideal.
Gymnocalycium horstii – what to know
Gymnocalycium horstii – family: Cactaceae, genus: Gymnocalycium. Native range: Brazil South, Global, Brazil. Care guidelines: light: full sun; water: low; min. 5 °C. It is not known to be toxic to cats or dogs.
All Gymnocalycium species in the catalog →Detailed toxicity data →
Frequently asked questions
How often should I water Gymnocalycium horstii?
Sparingly: let the soil dry out completely between waterings, and water even less in winter.
How much light does Gymnocalycium horstii need?
It needs plenty of direct sun – the sunniest window, or outdoors in summer, suits it best.
How cold can Gymnocalycium horstii get?
Keep it above 5 °C – it is frost-tender and needs a frost-free spot in winter.
Is Gymnocalycium horstii toxic to cats and dogs?
It is not known to be toxic to cats or dogs.
When does Gymnocalycium horstii flower?
According to the general guideline for the genus Gymnocalycium: Typical flowering time: May, June, July, August.
What members’ data shows
When does it really bloom?
No blooms logged yet. If yours flowers, your data will be the first!
Average watering interval
Not enough watering logs yet. Waterings logged in the care hub feed this chart.
Questions about this species
Gymnocalycium
Data sources: GBIF.org – Gymnocalycium horstii (CC BY 4.0) · Wikidata – Q290726 (CC0) · Wikimedia Commons – Gymnocalycium horstii 2.png (CC BY-SA 4.0) · Wikipedia – Gymnocalycium horstii (CC BY-SA 4.0) · Care data is for guidance only.

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