The bishop's cactus or "bishop's hat" (Astrophytum ornatum) is a slow-growing species of cactus. Its shape is spherical to cylindrical and reaches a height of 30 to 50 cm and a diameter of 15 to 30 cm. It belongs to the Cactaceae family. It comes from Mexico.
Description of the plant
The bishop's cactus (Astrophytum ornatum) is shaped like a star, hence the name Astrophytum. Its stem is dark green in color and bears 5 to 8 thorns. The thorns are borne on white or yellow spots evenly distributed on the stem. Its flowers are funnel-shaped and white-yellow in color. Its flowering period is from June to August.
It is suitable for cactus gardens or compositions with cacti and succulents.
Plant care
Location
It thrives in bright and sunny places. A south-facing position will provide good sunlight.
Temperature
Withstands minimum temperatures down to – 4 °C.
Planting substrate
There are substrates on the market suitable for succulents and cacti. They consist of peat, a part of coarse river sand and sifted leaf soil. This mixture provides good ventilation, excellent drainage and nutrient supply.
Watering
There is a misconception that cacti and succulents require infinitesimal amounts of water. Although they store water in their leaves and stems, they certainly won't thrive with too little water. Water every 10-15 days during the growing season (late spring, summer, early autumn) and much more sparsely in winter.
Tip!
The secret is to always let the soil dry out between waterings.
Lubrication
Lubrication should be done during the growing season and stopped in winter. There are fertilizers on the market especially for cacti and succulents. Use a fertilizer that is high in potassium, as it strengthens cell structures and plant resistance to disease.
Diseases and enemies
Cacti and succulents are infested with enemies and diseases. Their most common enemies are aphids, granules, thrips, blackflies and snails, and they are often infected by fungi.
