**Light** Thrives best in bright light; will love your brightest windowsill (try South-facing if in doubt!). **Water** Allow all the soil to dry out between watering; if the leaves curl it may have too much sun and too little water; if it starts to grow mushy or rot at the roots, likely too much water and too little sun. **Humidity** Low humidity is perfect for cacti; a hose down to clean now and again is fine as long as the plant dries and doesn't sit damp. **Soil** Needs a well-draining pot and potting mix; look for specific 'cacti and succulent' soils with plenty of sand and other well-draining materials. Only repot if absolutely necessary: use the next size pot up, repot in the spring, and no more frequently than every three years. **Food** Feed every two months in the growing season, and every three in autumn and winter. Use 'cactus' labelled feed. **Temperature** Likes temperatures of 20-32°C; don't let it drop below 10°C in winter. **Pet-safe** No, this plant is toxic to pets an