4"
🌞 Direct sunlight for at least 4-6 hours. Best if more light is provided. If there are signs of etiolation, it means that it is not getting enough light.
💧 Water once every 2-4 weeks during the spring and summer months. The frequency depends on if you keep it indoors or outdoors. Cut back water in the fall and winter months to at most every 2 months.
🐶 Yes and no. Though it is considered to be non-toxic, it may cause allergic reactions, stomach discomfort, irritation, and vomiting if injested. The spines and spurs can cause irritation.