Emm's Plant House

Gymnocalycium Mihanovichii Friedrichii Variegated Japan Gem 10cm H17cm

£21.00 GBP

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Pot Size 10cm H17cm

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Gymnocalycium mihanovichii ‘Friedrichii Variegated Japan Gem’ is a striking, colourful cactus with vivid variegation in shades of pink, yellow, red, and green. Often grafted onto a rootstock, it’s prized for its vibrant hues and easy-care nature—perfect for bright indoor spaces or cactus collections.

Full Botanical Name: Gymnocalycium mihanovichii ‘Friedrichii Variegated Japan Gem’
Common Names: Moon Cactus, Japan Gem Variegated Gymnocalycium
Country and/or Region of Origin: South America (Paraguay, Argentina, Bolivia)
Growing Conditions in Native Habitat: Dry, rocky lowlands and grasslands with intense sunlight and minimal rainfall

Care Guide

Care Guide:

Light: Bright, indirect light to gentle morning sun; avoid harsh afternoon rays to prevent scorch

Ideal Room: Bright kitchen, office, or windowsill display

Feeding: Cactus fertilizer diluted to half strength every 6–8 weeks in spring–summer

Humidity: Low; prefers dry air

Ideal Temperature: 18–30°C; protect from temperatures below 10°C

Watering: Allow soil to dry completely between waterings; water sparingly during winter dormancy

Pet/Child Safe: Non-toxic (genus level) — safe for pets and humans; caution for sharp spines that may cause minor injury

Soil Type: Gritty, well-draining cactus mix

Propagation: Grafting onto compatible rootstock (e.g., Hylocereus or Myrtillocactus)

Eventual Height and Spread: 5–10 cm tall; 6–10 cm wide

Growth Rate: Slow to moderate

Pests and Treatment: Mealybugs and spider mites; treat with insecticidal soap

Repotting: Every 2–3 years in spring

Pruning: Not required; remove offsets if present

Air Purification: Minor; improves indoor oxygen exchange

Folklore: Symbolises endurance and adaptability due to its vibrant survival through grafting

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