SPECIMEN NO. #25
🟢 PET SAFE
Family: Cactaceae
Mammillaria hahniana
Common Name: Old Lady Cactus
ASPCA Pet Toxicity Determination
Toxic to Dogs?
NO (Safe)
Toxic to Cats?
NO (Safe)
Clinical Symptoms:
Chemically non-toxic, mechanical irritation from spines.
Quantitative Care Thresholds
Light Level Profile
Direct Sun
Minimum Light Requirement
5000 Lux
Maximum Light Tolerance
15000 Lux
Watering Frequency
Every 21 Days
Temperature Envelope
10°C – 35°C
Ideal Ambient Humidity
20% RH
Taxonomic & Field Verification
GBIF Usage Key
7280027
Native Biogeographical Range
BR; Global; Mexico Northeast; Mexico Southwest; TW