Mammillaria bombycina · Succulent
Mealybugs: Isolate the plant and treat with a systemic insecticide or dab spots with alcohol-soaked cotton.
Root rot: Ensure well-draining compost and allow the soil to dry out completely between waterings.
Vine weevil: Check roots when potting and use a systemic insecticide if infestation is suspected.
Scale insects: Scrape off visible scales and apply an appropriate horticultural oil or insecticide.
Sunburn: Acclimatise gradually to bright light and avoid sudden exposure to intense midday sun.