gymnocalycium saglionis

Argentine giant, Blue barrel cactus.

Care level

Easy

This gentle giant of the cactus world can grow up to a foot wide, with its distinctive blue-green body decorated by neat rows of curved spines that turn grey with age. Despite its impressive size, it's quite the charmer, producing delicate pink or white flowers that form a crown around its top in spring and summer.

Care & maintenance

Light

Bright indirect light

Bright light, usually located near windows but doesn't receive direct rays for more than an hour during the day.

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

Medium

Upright

Slow growth

This plant grows slowly. It can reach 30 to 90 cm in height or spread.

It grows upwards without support.

Toxicity

Toxicity table by species
Cat
Dog
Human
gymnocalycium saglionis thumbnail
gymnocalycium saglionis thumbnail
gymnocalycium saglionis thumbnail
gymnocalycium saglionis thumbnail

Reproduction & propagation

Fruits & flowers

Flowering & not self-pollinating

The gymnocalycium saglionis 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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