Plant Care Echinopsis arachnacantha

Echinopsis arachnacantha

About Echinopsis arachnacantha

Echinopsis arachnacantha is a super rare houseplant 🌿 that needs very little water to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Echinopsis arachnacantha likes soil that is extremely well-draining. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.


Echinopsis arachnacantha

How to care for Echinopsis arachnacantha


How often to water your Echinopsis arachnacantha

Water needs for Echinopsis arachnacantha
0.5 cups
every 12

Echinopsis arachnacantha needs 0.5 cups of water every 12 when it doesn’t get direct sunlight and is potted in a 5" pot located in Madison, Wisconsin.

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 Echinopsis arachnacantha

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 Echinopsis arachnacantha in Madison, Wisconsin

Madison, Wisconsin

36% Very Low

Growing Echinopsis arachnacantha in Madison right now

Light needs for plant Echinopsis arachnacantha in Madison, Wisconsin

Plant growth potential is currently very low 📉

December 5th, 2021

Sunlight intensity as measured by “net radiation” in Madison is currently very low 📉.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in dete…

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Light needs for plant Echinopsis arachnacantha in Madison, Wisconsin

Sunlight intensity will decrease by 30.3% ☀️

December 4th, 2021

Madison is trending towards lower sunlight intensity!

The amount of sunlight in Madison is expected to decrease by 30.3% over the next 2 weeks to an average of 5.6 megajoules of energy per m2 per …

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Light needs for plant Echinopsis arachnacantha in Madison, Wisconsin

Daylight will decrease by 1.1 hours 📉

December 4th, 2021

This month, Madison is getting an average of 7.4 hours of clear sky sunlight per day.

Hours of daylight will decrease by 11.3% over the next two weeks. Your plants will get 8.8 total hours of dayl…

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Finding light for Echinopsis arachnacantha in your home

Light needs and placement for plant Echinopsis arachnacantha: 1ft from a window
1ft or less from
a window

Echinopsis arachnacantha love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Madison, Wisconsin ⛅.

Echinopsis arachnacantha does not tolerate low-light 🚫.


How to fertilize Echinopsis arachnacantha

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

When to repot Echinopsis arachnacantha

Nutrient needs for plant Echinopsis arachnacantha in Madison, Wisconsin

Is this a good time of year to repot? No ⏳

December 3rd, 2021

The growing potential in Madison is very low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's best to …

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Water Needs
Sunlight Needs
Native Region

Care Summary for Echinopsis arachnacantha

Echinopsis arachnacantha

Echinopsis arachnacantha

Greg recommends:


0.5 cups every 12 days


< 1ft from a window


Repot after 2x growth

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

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