Pilosocereus azureus

Advice

• It should be planted in a well-drained substrate.
• Use liquid fertiliser when watering during the spring and summer seasons.

Signs of weakness

Although these cacti do not have many serious pest or disease problems, there are some common conditions to watch out for. Most often you will notice a mealybug problem, which can affect almost every part of the plant, from the roots to the ribs. To treat them, inspect the entire plant and use a brush or high-pressure water hose to remove as many of the insects as you can from the plant. Then treat with an insecticide until all traces of infection are gone.