Pilosocereus arrabidae is a striking columnar cactus native to Brazil, known for its ribbed stems and woolly areoles. It's a beautiful specimen for arid gardens.
At-a-glance light, water, soil, and growing conditions from plant data
Prefers full sun to light shade.
75% intensity
Provide at least 6 hours of direct sunlight daily for optimal growth and flowering. Can tolerate some partial shade, but may become etiolated.
Allow soil to dry out completely between waterings.
25% intensity
Well-draining
50% intensity
Warm to hot temperatures.
75% intensity
Ideal temperatures range from 20-30°C during the growing season. Protect from frost; it is not cold-hardy and should be brought indoors or protected if temperatures drop below 10°C.
Feed sparingly during growing season.
25% intensity
Use a balanced, diluted cactus fertilizer once or twice during spring and summer. Avoid fertilizing in fall and winter.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Non-toxic
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water thoroughly when the soil is completely dry. Allow excess water to drain away. In winter, reduce watering significantly to prevent root rot, providing only enough to keep the roots from shriveling.
Overwatering is the most common cause of death for this species.
Pruning is generally not necessary for Pilosocereus arrabidae, as it forms a natural columnar shape. If specific branches become damaged or overgrown, they can be removed using a sharp, sterilized knife or saw.
Cut close to the main stem to promote healing and prevent disease entry.
Propagate by stem cuttings. Allow cuttings to callus over for several days before planting in well-draining cactus or succulent mix. Keep the soil lightly moist and provide warmth for rooting.
This method is best done in spring or early summer.
Repot only when the cactus has outgrown its container, typically every 2-3 years. Use a well-draining cactus mix. Handle with care to avoid spine damage. Repot in spring before the active growing season begins.
Ensure the new pot has drainage holes.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Pilosocereus Arrabidae (Pilosocereus arrabidae)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Caryophyllales |
| Family | Cactaceae |
| Genus | Pilosocereus |
| Species | Pilosocereus arrabidae |
Similar in genus Pilosocereus
Answers based on plant encyclopedia data
