Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense
Gymnocalycium riojense

Forms flat grayish/brown to olive/green stems with (usually) three spider like spines per areoles, it is fairly rare in cultivation but easy to grow.
It is a dark skinned solitary Argentinian cactus with almost useless spines making it relatively easy to handle. G. riojense is one of the most variable Gymnocalycium. Will eventually offset after a considerable period of time.

Blooming season: Flowers are produced in late spring and remain open for up to twelve days.
Watering: needs moderate to copious waterings in summer, but do not overwater (Rot prone), keep dry in winter at a minimum temperature of 0°C.
Exposition: The plant tolerates extremely bright situations but enjoys filtered sunlight or afternoon shade, inside it needs bright light, and some direct sun. Tends to bronze in strong light, which encourages flowering and heavy spine production, but is likely to suffer from sun scorch or stunted growth if over exposed to direct sunlight during the hottest part of the day in summer.
Uses: It is an excellent plant for container growing. It always looks good and stays small. It look fine in a cold greenhouse and frame or outdoor in a rockery.

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz

Bloom Season

Spring--Autumn

Flower Color

Yellow

Growth Rate

Slow growth

Hardiness Zone

11

Mature Size

18 cm

Resistance

4° C

Sun Exposure

Full sun
Bloom Season Spring, Autumn
Botanical Name Gymnocalycium riojense
Common Name Gymnocalycium triacanthum
Dormancy Winter
Family Cactaceae
Flower Color Yellow
Genus Gymnocalycium
Growth Habit Globose
Growth Rate Slow growth
Hardiness Zone 11
Mature Size 18 cm
Native Area Northern argentina
Resistance 4° C
Sun Exposure Full sun
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Growers Quick Reference Guide - Key Features

Bloom Season Spring, Autumn
Botanical Name Gymnocalycium riojense
Common Name Gymnocalycium triacanthum
Dormancy Winter
Family Cactaceae
Flower Color Yellow
Genus Gymnocalycium
Growth Habit Globose
Growth Rate Slow growth
Hardiness Zone 11
Mature Size 18 cm
Native Area Northern argentina
Resistance 4° C
Sun Exposure Full sun

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Gymnocalycium riojense

sku: 314

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Please note: Our large plants are many years old, and as a result, they might have minor scaring but will arrive 100% healthy and looking great.

Please note: Our large plants are shipped bare root. They are also many years old, and as a result, they might have minor scaring but will arrive healthy and looking great.

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If you are not 100% satisfied with your purchase, you can return the product and get a refund or exchange it for another one — similar or not. Shipping charges may apply.

You can return a product for up to 14 days from the date of purchase. Please submit photos with your order number to info@planetdesert.com to initiate your return. Shipping fees may apply.

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  • Description
  • Key Plant Features

Forms flat grayish/brown to olive/green stems with (usually) three spider like spines per areoles, it is fairly rare in cultivation but easy to grow.
It is a dark skinned solitary Argentinian cactus with almost useless spines making it relatively easy to handle. G. riojense is one of the most variable Gymnocalycium. Will eventually offset after a considerable period of time.

Blooming season: Flowers are produced in late spring and remain open for up to twelve days.
Watering: needs moderate to copious waterings in summer, but do not overwater (Rot prone), keep dry in winter at a minimum temperature of 0°C.
Exposition: The plant tolerates extremely bright situations but enjoys filtered sunlight or afternoon shade, inside it needs bright light, and some direct sun. Tends to bronze in strong light, which encourages flowering and heavy spine production, but is likely to suffer from sun scorch or stunted growth if over exposed to direct sunlight during the hottest part of the day in summer.
Uses: It is an excellent plant for container growing. It always looks good and stays small. It look fine in a cold greenhouse and frame or outdoor in a rockery.

Some of the information in this description has been found at desert-tropicals.com, llifle.com and cactus-art.biz

Bloom Season

Spring--Autumn

Flower Color

Yellow

Growth Rate

Slow growth

Hardiness Zone

11

Mature Size

18 cm

Resistance

4° C

Sun Exposure

Full sun
Bloom Season Spring, Autumn
Botanical Name Gymnocalycium riojense
Common Name Gymnocalycium triacanthum
Dormancy Winter
Family Cactaceae
Flower Color Yellow
Genus Gymnocalycium
Growth Habit Globose
Growth Rate Slow growth
Hardiness Zone 11
Mature Size 18 cm
Native Area Northern argentina
Resistance 4° C
Sun Exposure Full sun

Growers Quick Reference Guide - Key Features

Bloom Season Spring, Autumn
Botanical Name Gymnocalycium riojense
Common Name Gymnocalycium triacanthum
Dormancy Winter
Family Cactaceae
Flower Color Yellow
Genus Gymnocalycium
Growth Habit Globose
Growth Rate Slow growth
Hardiness Zone 11
Mature Size 18 cm
Native Area Northern argentina
Resistance 4° C
Sun Exposure Full sun

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