Emory's Barrel Cactus
ferocactus emoryi
Also known as: ["Barrel Cactus","Compass Barrel Cactus"]
Overview
A large, barrel-shaped cactus with prominent ribs and spines, native to arid regions of North America.
Benefits & Perks
["drought tolerant","deer resistant","aesthetic foliage","wildlife attractant (bees, butterflies, birds)"]
Botanical Classification
| Phylum: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Genus: | Ferocactus |
| Botanical Name: | Ferocactus emoryi |
Plant Characteristics
Basic Information
- Category: Succulents & Cacti
- Suitable Location: indoor pot in bright, sunny location or outdoor garden in arid, well-drained area
- Suitable For:
- Is Weed: No
- Allergenicity: low
Environmental Needs
- Climate: {"temperatureRange":"5–40°C"}
- Hardiness: {"zones":"9–11"}
- Misting: rarely required, only if ambient humidity is very low
- Drainage: Fast-draining to prevent waterlogging.
- Soil Type: Well-draining cactus or succulent mix with added sand or perlite.
Maintenance Level
- Maintenance Level: very low
- Toughness Level: high
- Pruning Frequency: As needed, typically every 2-3 years or when dead segments are present.
- Pruning Intensity: Light to moderate; remove only dead or damaged parts.
Care Details
Ideal Sunlight Coverage:
Full sun exposure (6-8 hours of direct sunlight daily); adjust to partial shade in extreme summer heat to prevent scorching.
Sunlight Tolerance Tips:
Acclimate new plants gradually to full sun; provide shade during peak summer heat; for indoor plants, place near a south-facing window with unobstructed light.
Care Requirements
Care Difficulty
moderatemoderate
Sunlight
full sun
Rotate plant weekly for even growth; use sheer curtains to filter intense summer sun; avoid sudden light changes.
Watering
every 7–10 days during growing season, every 3–4 weeks in winter
Water thoroughly but infrequently; ensure soil dries out completely between waterings; avoid waterlogging, especially in winter.
Soil
fast-draining cactus mix with coarse sand or perlite
pH: Slightly acidic to neutral (pH 6.0-7.0).
Use pots with drainage holes; avoid heavy garden soils; ensure soil dries quickly between waterings.
Temperature
Prefers warm temperatures (70-90°F or 21-32°C) during active growth; tolerates brief periods below 50°F (10°C) but thrives in heat.
Avoid sudden temperature drops; protect from frost; ensure good ventilation in hot climates.
Fertilizing
every 2–3 months during growing season with balanced cactus fertilizer
Fertilize only when actively growing; avoid over-fertilizing, which can cause etiolation; flush soil occasionally to prevent salt buildup.
Propagation
Methods
Stem cuttings (rarely offsets); seed propagation is more common for this species.
Step-by-Step Propagation Guide
- Select healthy stem segment.
- Let cut end dry for a few days.
- Plant in well-draining medium.
- Keep moist but not wet.
- Provide warmth and indirect light.
Best Time: Spring or early summer when the plant is actively growing.
Environment
Warm (70-80°F or 21-27°C), bright indirect light, high humidity (60-70%) for cuttings; full sun for seedlings once established.
Medium
Well-draining cactus mix with added perlite or sand for aeration.
Hormone
Rooting hormone is optional but can help speed up root development.
Timeline
Seeds may take several weeks to months to germinate; cuttings may root in 4-8 weeks.
Tools Needed
Sharp, sterile knife or scissors, rooting hormone (optional), well-draining medium, propagation tray or pot.
Quick Tips
Do not overwater cuttings; provide bottom heat for faster rooting; use sterile tools to prevent disease.
Pruning & Repotting
Pruning Guide
Method
Cut segments with a clean, sharp knife or shears; allow cut ends to dry before handling or repotting.
Pruning Plan
Minimal pruning needed; remove dead or damaged segments if necessary; shape as desired but avoid excessive cutting.
Tools
Sterile knife or pruning shears, gloves, clean cloth.
Checklist
Identify dead/damaged segments; use clean tools; allow cuts to callous; dispose of removed parts properly.
Repotting Guide
Best Season
Spring, before the active growing season begins.
Pot Size
One size larger pot (e.g., +2 inches in diameter); ensure bottom drainage holes.
Method
Remove plant carefully; trim any dead roots; place in a slightly larger pot with fresh cactus mix; ensure good drainage.
Suggestions
Repot every 3-4 years or when the plant outgrows its container; necessary to refresh soil and provide space for growth.
Checklist
Choose appropriate pot size; use fresh cactus mix; handle roots carefully; allow plant to settle before watering.
Advanced Care Tips
Watering Mastery
Watering Checklist
Check soil moisture before watering; water deeply; ensure drainage; reduce winter watering; avoid wetting the cactus body.
How to Apply Water Properly
Water directly at the root zone until water drains from the bottom; ensure excess water drains away; water in the morning to allow foliage to dry; avoid wetting the stem or body of the cactus.
Watering Schedule Tips
Water deeply during the growing season (spring-summer) every 7-14 days, depending on temperature and humidity; reduce frequency to monthly or less in fall-winter; allow soil to dry completely between waterings.
Soil Improvement
Add coarse sand, perlite, or pumice to commercial cactus mix; ensure soil is loose and airy.
Temperature Stress Management
Signs of Temperature Issues
Chlorosis or yellowing of spines; stunted growth; soft, mushy base (cold stress); wilting or shriveling (heat stress).
Cold Stress
Prolonged cold temperatures cause root rot and cellular damage; slows metabolic processes, leading to decline.
Solution: Move to a warmer location; ensure soil is dry; use a heat mat for indoor plants; protect from frost.
Hot Stress
Excessive heat can cause sunburn, dehydration, and stress; may lead to etiolation if not enough water is available.
Solution: Provide afternoon shade; increase watering frequency; ensure good air circulation; mist occasionally in extreme heat.
Fertilizing Guide
Fertilizing Checklist
Use cactus-specific fertilizer; dilute properly; fertilize during growing season; avoid winter feeding.
Fertilizing Method
Use a balanced, low-nitrogen cactus fertilizer diluted to half strength; fertilize monthly during growing season (spring-summer); avoid fertilizing in fall-winter.
Common Problems & Solutions
Toxicity Warning
Cats
ToxicThe spines of Ferocactus emoryi can cause mechanical injury to cats, especially if they are curious and attempt to interact with the plant. Ingestion can result in gastrointestinal irritation and potential blockages due to the plant's fibrous content.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if touched or eaten
Dogs
ToxicThe spines of Ferocactus emoryi can cause mechanical injury to dogs, particularly if they are stepped on or brushed against. Ingestion may lead to gastrointestinal upset due to the plant's fibrous nature and potential irritants.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if touched or eaten
Humans
ToxicThe spines of Ferocactus emoryi can cause mechanical injury upon contact, while the sap may cause skin irritation or allergic reactions. Ingestion can lead to gastrointestinal distress due to the plant's fibrous and potentially irritating components.
⚠️ Symptoms:
🌿 Toxic Parts:
⚡ Toxic If:
if touched or eaten
Frequently Asked Questions
Q: How often should I water Ferocactus emoryi?
A: Water sparingly, only when the soil is completely dry, typically every 2-4 weeks depending on climate.
Q: Can Ferocactus emoryi be grown indoors?
A: Yes, but it requires bright, direct sunlight and excellent drainage to thrive.
Q: Is Ferocactus emoryi toxic to pets?
A: No, it is non-toxic to dogs and cats, though spines can cause physical injury.
Quick Reference
| Family: | Cactaceae |
| Care: | moderate |
| Light: | full sun |
| Water: | every 7–10 days during growi |
Get Expert Care Tips
Download the Plantious app for personalized care reminders and plant identification!
Google Play App Store
