Black Barrel Cactus

Taxonomy

Scientific name

Echinocactus polycephalus var. subniger

Genus

Echinocactus

Family

Cactaceae

Order

Caryophyllales

How to care for Black Barrel Cactus

💦 Water

How often to water your Black Barrel Cactus

Black Barrel Cactus needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Water 0.5 cups every
12

Does your plant get direct sunlight?

No Yes

Select the pot size

☀️ Light

Finding light for Black Barrel Cactus in your home

Black Barrel Cactus love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Black Barrel Cactus does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Black Barrel Cactus in your home 🏡.

🪴 Nutrients

How to fertilize Black Barrel Cactus

Nutrient, fertilizer, and repotting needs for Black Barrel Cactus: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Black Barrel Cactus after it doubles in size or once a year—whichever comes first.

Browse #Echinocactus

💡 FAQs

💦 Water Needs

Black Barrel Cactus thrives in dry soil and should be watered sparingly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

☀️ Sunlight Needs

Black Barrel Cactus requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

🐶 🐈 👶 Toxicity

Black Barrel Cactus is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.

🪴 Soil

Black Barrel Cactus is very sensitive to wet soil, so choose a potting soil that drains very well and doesn’t retain too much moisture. A good soil will have lots of perlite or vermiculite for drainage and some organic matter for nutrition. A few handfuls of perlite added to regular store-bought cactus soil will do the trick!

🌦️ Growing Outdoors

USDA Hardiness Zone
Black Barrel Cactus can be grown outdoors in USDA Hardiness Zones 9a-11b. Find your local hardiness zone here.

🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.

😖 Common Issues

Overwatering is a likely cause of issues with Black Barrel Cactus. These plants are very sensitive to wet soil so if you notice your plant becoming squishy or translucent, overwatering is the likely culprit.

Cut your plant just past where the rot ends and allow it to callus over for a few days before replanting it in fresh, dry soil. Download Greg to make sure your plant never gets overwatered again!