Plant Care Fire Barrel Cactus

Fire Barrel Cactus

Also known as

Mexican Lime Cactus and Ferocactus pilosus.


Ferocactus pilosus

How to care for Fire Barrel Cactus


How often to water your Fire Barrel Cactus

Water needs for Fire Barrel Cactus
0.5 cups
every 12

Fire 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.

Calculate water needs of Fire Barrel Cactus

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Select a city to check sunlight intensity

Finding light for Fire Barrel Cactus in your home

Light needs and placement for plant Fire Barrel Cactus: 1ft from a window
1ft or less from
a window

Fire 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.

Fire Barrel Cactus does not tolerate low-light 🚫.

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


How to fertilize Fire Barrel Cactus

Nutrient, fertilizer, and repotting needs for Fire 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 Fire Barrel Cactus after it doubles in size or once a year—whichever comes first.

Water Needs
Sunlight Needs
Native Region

Care Summary for Fire Barrel Cactus

Fire Barrel Cactus

Fire Barrel Cactus

Greg recommends:


0.5 cups every 12 days


< 1ft from a window


Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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