opuntia subulata

Pencil cactus, Needle opuntia.

Care level

Easy

Unlike its paddle-shaped relatives, this unique cactus grows long, pencil-thin stems that can reach impressive heights of up to 13 feet tall. Each stem is decorated with unusually long spines and produces charming yellow flowers that transform into elongated red fruits, giving it an almost alien-like appearance.

Care & maintenance

Light

Direct sunlight

Light that enters through west or south-facing windows, the most intense light for your interior that will expose plants directly to sunlight.

Temperature

Wide range (5°C - 35°C)

Fertilization frequency

Low

Once per season.

Humidity & watering

Low

Allow the soil to dry between waterings.

An ambiant humidity between 20 and 50% is recommended.

Soil

Choose a Cactus mix: A gritty, fast-draining mix that prevents water retention. Replicates the sandy, rocky soils of arid regions.

If you want to create your own substrate, you can make a mixture of the following soils:

Click on the soil name for more information.

Pot

Standard size

Standard size

Prefer a pot with a classic width/depth ratio.

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Features

Size & growth

Large

Upright

Slow growth

This plant grows slowly. It can reach 90 to 180 cm in height or spread.

It grows upwards without support.

Toxicity

Toxicity table by species
Cat
Dog
Human
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Reproduction & propagation

Fruits & flowers

Flowering & not self-pollinating

The opuntia subulata can produce flowers and therefore fruits.
This plant is not capable of self-pollination, it will not be able to produce fruits if it is not pollinated by another individual.

Propagation methods

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