Plant Care Cactus Mystax

Cactus Mystax

Also known as

Mystax and Mamillaria mystax


Mammillaria mystax

How to care for Cactus Mystax


How often to water your Cactus Mystax

Water needs for Cactus Mystax
0.5 cups
every 12

Cactus Mystax needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot located in Houston, Texas.

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 Cactus Mystax

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.

Plant care guide for Cactus Mystax in Houston, Texas

Houston, Texas

55% Medium

Finding light for Cactus Mystax in your home

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

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

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

Cactus Mystax does not tolerate low light 🚫.

Houston, Texas currently has medium levels of sunlight intensity, you can help this plant grow by treating it to ample light ☀️.


How to fertilize Cactus Mystax

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

Water Needs
Sunlight Needs
Native Region

Care Summary for Cactus Mystax

Cactus Mystax

Cactus Mystax

Greg recommends:


0.5 cups every 12 days


< 1ft from a window


Repot after 2x growth

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

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