Brain Cactus·Perry's Outdoor Plants
Mammillaria elongata
Brain Cactus
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Species Name
Genus
Family
Adoption Date
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Collection
Gallery
Care Guide
Care Requirements
LightBright, direct sunlight is ideal; can tolerate some light shade.
WateringAllow soil to dry completely between watering. Water sparingly, especially in winter.
SoilWell-draining cactus or succulent mix is essential.
FertilizerFeed lightly with a diluted cactus fertilizer during the growing season (spring and summer).
HumidityPrefers low humidity; avoid overly humid environments.
TemperatureOptimal range is 18–24°C (65–75°F); can tolerate short periods down to 5°C (41°F) if kept dry.
Growth & Life Cycle
HabitClumping, cylindric stems with tubercles; forms dense clusters.
Mature SizeUp to 15 cm tall and 30 cm across when clustered.
Growth RateSlow to moderate growth rate.
BloomingSmall, white to yellowish flowers appear in a ring near the stem apex in spring.
DormancyDormant in winter; greatly reduce watering during this period.
Propagation
MethodsOffsets (pups), Seed
DifficultyEasy; offsets are readily produced.
Best SeasonSpring or summer for both offsets and seeds.
Maintenance & Notes
PruningRemove dead or damaged stems as needed; separate offsets to control spread.
RepottingEvery 2–3 years, preferably in spring; use fresh, sterile cactus soil.
Pests & DiseasesSusceptible to mealybugs, spider mites, and root rot if overwatered.
ToxicityNon-toxic to humans and pets.