Plant Details

• Botanical NameCactus - Grafted Assorted Colors (Gymnocalycium spp. scion grafted onto Hylocereus spp. or similar)
• Common NameCactus - Grafted (“Moon Cactus”)
• Size & GrowthCompact; typically 4–8 in tall (10–20 cm). Colored scion is ~1–2.5 in across; may slowly enlarge over time.
• Hardiness ZonesUSDA 10–11. Frost sensitive; best grown indoors outside these zones. Protect below 50°F (10°C).
• Foliage TypeEvergreen succulent cactus with spines; colorful chlorophyll-deficient scion atop green rootstock.
• Bloom TimeOccasional in summer under excellent light; flowers may be nocturnal. Rare indoors.
• Growth RateSlow to moderate; scion enlarges gradually while rootstock may elongate over years.
• Light RequirementsBright, indirect to filtered sun; gentle morning sun is ideal. Avoid harsh midday rays that can scorch the scion.
• Attracts PollinatorsLow. If flowers occur outdoors, they may attract night-flying pollinators; rarely blooms indoors.
• Indoor FriendlyExcellent houseplant with bright light and infrequent watering; thrives near sunny windows.
• Container FriendlyPerfect for small pots with drainage; pairs well in mixed succulent bowls.
• Deer ResistantYes. Spines deter browsing; best kept in containers for protection from cold and excess rain.
• Pet WarningGenerally non-toxic, but spines can injure pets and people. Keep out of reach; supervise curious pets.
• FragrantUsually not fragrant; any blossoms tend to be lightly scented at night and are uncommon indoors.
• Cut FlowerNot typically used as a cut flower; best appreciated as a potted specimen.
• Grows Well WithGrows Well With Other low-water succulents and cacti such as Mammillaria, Rebutia, Echinopsis, Sedum, and compact Crassula.

Care Tips

• Planting InstructionsChoose a pot with drainage 1–2 in wider than the root ball. Set the plant so the graft junction (where scion meets rootstock) remains well above the soil line. Backfill with cactus mix and allow 3–5 days before first watering after repotting.
• Soil MoistureWater thoroughly, then allow soil to dry 75–100% before watering again. In winter, water sparingly—just enough to prevent shriveling.
• Soil TypeFast-draining cactus/succulent mix amended with mineral grit (50–70% pumice, perlite, or coarse sand) to prevent root rot.
• HumidityPrefers low humidity (10–40%). Ensure good air circulation; avoid placing near humidifiers or steamy kitchens/baths.
• Pruning InstructionsRemove any offsets or shoots that form below the scion on the rootstock to preserve the graft’s shape. Use sterile tools and allow cuts to callus.
• Winter CareProvide the brightest possible light. Keep above 50°F (10°C). Water lightly once every 4–6 weeks, depending on indoor dryness and temperature.
• Planting DepthPlant at the same depth as the nursery pot. Keep the graft union prominently above soil level to reduce rot risk.
• FertilizationFeed lightly during spring–summer with a cactus fertilizer at 1/4 strength every 6–8 weeks. Do not fertilize in fall/winter.
• Special CareRotate monthly for even color. Acclimate gradually to stronger light to prevent scion sunburn. Monitor for mealybugs/scale. As rootstock ages, re-grafting may be needed to extend plant life.

Note: Color assortment varies; care needs are consistent across grafted color forms.