Ferocactus johnstonianus is a barrel cactus native to Mexico. It features robust, ribbed stems and formidable spines, making it a striking desert landscape specimen.
At-a-glance light, water, soil, and growing conditions from plant data
Full Sun
100% intensity
Prefers bright, direct sunlight for at least 6-8 hours daily. Can tolerate some afternoon shade in very hot climates.
Infrequent
25% intensity
Allow soil to dry out completely between waterings. Reduce watering significantly in winter.
Well-drained
50% intensity
Warm to Hot
75% intensity
Prefers warm to hot temperatures during the growing season. Can tolerate brief drops to around 5°C but protect from frost.
Low
25% intensity
Fertilize sparingly with a diluted cactus-specific fertilizer during the spring and summer growing season.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Allow the soil to dry out completely between waterings. In its native arid habitat, this cactus experiences long dry spells.
Overwatering is the most common cause of root rot, so err on the side of underwatering, especially during cooler months when growth slows significantly.
Pruning is generally not necessary for Ferocactus johnstonianus unless removing damaged or diseased parts. If a segment needs to be removed, use a clean, sharp knife or saw.
Allow the cut surface to callus over for several days before replanting or discarding.
Propagate primarily through seeds, which require warm temperatures and consistent moisture to germinate. Cuttings are also possible but can be prone to rot.
Ensure cuttings are fully callused before planting in a well-draining cactus mix.
Repot every 2-4 years or when the plant becomes root-bound. Choose a pot that is only slightly larger than the current one, with ample drainage holes. Use a gritty, well-draining cactus and succulent potting mix.
Handle with care to avoid spines.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Ferocactus Johnstonianus (Ferocactus johnstonianus)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Ferocactus |
| Species | Ferocactus johnstonianus |
Similar in genus Ferocactus
Answers based on plant encyclopedia data
