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Gymnocalaycium JAPAN GEM 7.5cm H13cm

Gymnocalaycium JAPAN GEM 7.5cm H13cm

£18.00 GBP
£18.00 GBP
Sale Sold out
Taxes included.
Pot Size

Meet Gymnocalycium ‘Japan Gem’—the jewel-box cactus. Compact, rounded and richly marked, she has the precise, collectible feel cactus fans love. Small but striking, she’s a polished little gem for bright windowsills and curated cactus trays.

  • The Formal Name: Gymnocalycium ‘Japan Gem’
  • The Nickname: Japan Gem Chin Cactus
  • Roots: A selected Gymnocalycium cultivar from a South American cactus genus popular with collectors.
  • Natural Vibe: Dry, open, mineral-rich conditions where strong light and fast drainage are everything.

Care Guide

  • Care Guide:
  • Sunlight: She wants bright light with some direct sun to keep her shape strong and compact.
  • Best Room: A sunny windowsill, conservatory or bright shelf with excellent airflow.
  • Snacks: Use a cactus feed once a month in the warmer growing season only.
  • Tropical Feels: Keep humidity low to moderate and avoid constantly damp conditions.
  • Cosy Factor: Warm rooms suit her well, with a cooler, dry winter rest helping long-term health.
  • Thirst: Let the soil dry out fully before watering, then water deeply and allow excess to drain.
  • Safety First: Generally pet friendly – not a chew plant, and the spines mean she should be kept out of reach.
  • The Bedding: A gritty, mineral-rich cactus mix with excellent drainage is essential.
  • Family Tree: Propagate by offsets or seed depending on the plant’s form.
  • Space Needs: Tiny but eye-catching, perfect for a bright desk, sill or cactus arrangement.
  • Speed: Slow and steady, with shape and markings improving in strong light.
  • Uninvited Guests: Watch for mealybugs tucked into ribs and crevices.
  • Moving Day: Repot every 2–3 years or when the plant has outgrown the pot.
  • Haircut: No pruning needed; simply remove old dried flower remains if present.
  • Fresh Air: A sculptural sun-lover that adds desert texture to bright rooms.
  • Plant Lore: The ‘Japan Gem’ name suits her perfectly—small, precise and made to be admired up close.
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