Emm's Plant House

Gymnocalycium mihanovichii Siam Daydream 7.5cm H13cm

£26.00 GBP

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Pot Size 7.5cm H13cm

Quantity

Gymnocalycium mihanovichii ‘Siam Daydream’ is a colourful Moon Cactus cultivar with bright red, pink, or orange hues, often grafted onto a green rootstock. It brings cheerful colour to windowsills and succulent arrangements.

Full Botanical Name: Gymnocalycium mihanovichii ‘Siam Daydream’
Common Names: Moon Cactus, Siam Cactus
Country and/or Region of Origin: South America (Paraguay, Argentina)
Growing Conditions in Native Habitat: Native Gymnocalycium species grow in arid grasslands with intense sun and little rainfall

Care Guide

Care Guide:

Light: Bright, indirect light; avoid harsh midday sun

Ideal Room: Bright windowsill or sunlit conservatory

Feeding: Feed monthly with diluted cactus fertilizer during spring–summer

Humidity: Low humidity

Ideal Temperature: 18–30°C (65–86°F); keep above 10°C (50°F)

Watering: Allow soil to dry completely before watering again

Pet/Child Safe: Non-toxic — Gymnocalycium species are not listed as poisonous by the ASPCA. Physical injury from spines or minor stomach upset may occur if chewed. Always handle with care.

Soil Type: Gritty, free-draining cactus mix

Propagation: By offsets or grafting

Eventual Height and Spread: 10–15 cm tall; 8–12 cm wide

Growth Rate: Slow

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

Repotting: Every 2–3 years; minimal root disturbance

Pruning: None required

Air Purification: Minimal

Folklore: Often gifted as a “friendship cactus” representing resilience and colour in adversity

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