Plant Care Rainbow Cactus

Rainbow Cactus


Echinocereus rigidissimus subsp. rubispinus

How to care for Rainbow Cactus


How often to water your Rainbow Cactus

Water needs for Rainbow Cactus
0.5 cups
every 12

Rainbow 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 Rainbow 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 Rainbow Cactus in your home

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

Rainbow Cactus love being close to bright, sunny windows 😎.

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

Rainbow Cactus does not tolerate low-light 🚫.

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


How to fertilize Rainbow Cactus

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

Water Needs
Sunlight Needs
Native Region

Care Summary for Rainbow Cactus

Rainbow Cactus

Rainbow 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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