Plant Care Corncob Cactus

Corncob Cactus

4.7 out of 5 (3 experiences)

Corncob Cactus has a Large, lush leaves plant personality Large, lush leaves
Corncob Cactus has a Survivor plant personality Survivor

Also known as

Corncob Euphorbia, corn cob cactus, Indian Corn Cob, Variegated Corn Cob Cactus, euhorbia mamillaris, euphorbia mammilaris and Euphorbia Venenifica


Euphorbia venefica

How to care for Corncob Cactus


How often to water your Corncob Cactus

Water needs for Corncob Cactus
0.5 cups
every 12

Corncob 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 Corncob 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 Corncob Cactus in your home

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

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

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

Corncob Cactus does not tolerate low-light 🚫.

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


How to fertilize Corncob Cactus

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

Difficulty Level

Corncob Cactus is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Native Region
Growth Pattern
Growing Outdoors

Care Summary for Corncob Cactus

Corncob Cactus

Corncob 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.

What other plant parents say

Corncob Cactus has a Large, lush leaves plant personality Large, lush leaves 1
Corncob Cactus has a Survivor plant personality Survivor 1
@SirLiquorice avatar
leaf-1 137 Plants
xp 16,011 XP

Just like the uniqueness of this one. Lol I said it has large lush leaves but it doesn’t. They’re tiny actually.

Large, lush leaves Large, lush leaves
Lachie avatar
leaf-1 8 Plants
xp 174 XP

Grows up to be a vine

Survivor Survivor

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