Bishop's cap, Astrophytum myriostigma - Care of the cactus


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Of the Astrophytum myriostigma is one of the popular cacti, because he is quite undemanding and he has no spikes. His blooming joy contributes to its popularity. Although the single flower usually lasts only a few days, but the Astrophytum myriostigma enjoys the cactus lovers continuously from May to October with its flowers. By the way: This cactus got its German name 'Bischofsm├╝tze', because in its young growth stage its form and the arrangement of the individual ribs are very similar to a bishop's cap.
General
The cactus Bischofsm├╝tze Astrophytum myriostigma appears round and spherical in its youthful form. After about two years, however, he changes his appearance. It grows cylindrically in height and can then be up to 25 cm high and up to 12 cm wide. This thornless cactus has a green base color. Instead of spines, it is overgrown with very small, silvery shades of wool, which give it a white-gray-silvery shimmer. Unmistakable make the Astrophytum myriostigma his sharp-edged ribs. Normal are 5 ribs. However, it sometimes happens that he trains 4 to 8 ribs. Its flowers appear in the main growing season in a bright yellow, with a reddish color in the middle of the flower.
Origin and species
The home of the Cactus Bishop's Hat, Astrophytum myriostigma, are the dry and hot zones of Mexico. There are five species of the genus Astrophytum, asterias, capricorne, caputmedusae, myriostigma and ornatum.
maintenance
The cactus Bischofsm├╝tze makes no great demands on the nursing skills of the cactus lover. Its main growing season ranges from spring to autumn. During this time he tolerates normal room temperatures in a sunny spot. From late autumn to the end of winter he needs a rest period at temperatures of 7 - 10┬░ C. He will thank the rest period enjoyed in the main growing season with many large yellow-red and funnel-shaped flowers.
Location
This cactus genus needs above all direct sunlight for healthy growth. A place in the full sun of a south window is very well suited. And in summer, the cactus feels very well in the field, on a sheltered from sunshine pitch without any shade.
to water
Like all cacti, the bishop's cap should be watered regularly in the growing season. However, the root ball should always have time between waterings to be able to dry off. During the rest period, only enough water is poured as is absolutely necessary to prevent the root ball from completely drying out. Rainwater or decalcified water are particularly well tolerated. To prevent root rot caused by waterlogging, excess water should be released. Tip: The Bischofsm├╝tze thrives particularly well if it is sprayed from the top every 14 days.
substratum
The best thrive of the Astrophytum myriostigma in a mixture that you can make yourself. A part of sharp sand (or perlite) and two parts of soil based on compost (or peat-based) are the best basis for the prosperity of the bishop's cap. Of course, also substrate for cactus plants can be purchased commercially.
proliferation
An increase of this cactus species is possible only in the spring and only from seeds. There are Astrophytum seeds in the trade. As a rule, the rearing succeeds well when seed soil is mixed with about 25 percent fine sand or quartz sand. The earth should not be too rough in any case. The sand-soil mixture is moistened with a nebulizer. Then hang up the seeds. Cacti are light germs, so seeds should not be covered with soil. Heat from 16┬░ to 25┬░ C is important now. To ensure high humidity, the seed bowl should be covered with a glass or clear foil. Tip: Every two to three days, air the dish for about 2 hours to prevent rot.
Fertilize
During the main growth phase fertilization with a liquid fertilizer is sufficient every four weeks. If a peat-based substrate is used, it should be lightly fertilized every 14 days.
repotting
This cactus does not need a bigger pot every year. A root control in early spring is advisable. If the soil is already well rooted, the cactus should be transferred to a next larger pot. If the bale is not deeply rooted yet, simply shake off as much of the old soil as possible. Then the plant is provided with fresh substrate put back in the old pot. Only the Astrophyta asteeria and caputmedusae have a so-called root of beet. All other species, such as the bishop's cap, are flat-rooters and therefore require shallower planters.
Related Art
The bishop's cap Astrophytum myriostigma nudum has 5 ribs and is smooth and green.The small silvery-gray woolly sticks of the genus Astrophytum myriostigma are not present here. Its flowers are about 5 cm tall and bright yellow with red center.
pests

  • For all cactuses especially the weevils are dangerous. They are now resistant to almost all chemical agents. Their larvae damage the roots of the cactus, which will inevitably lead to the death of the cactus. So check the soil for larvae every time you repot.
  • Spider mites occur when the room air is too dry. This is especially true for cacti in a greenhouse. Here it can be helpful if the room temperature is regulated to about 21┬░ C. The humidity should be increased significantly.
  • Since most pests are introduced when buying plants, each cactus should be immediately repotted after purchase and examined for any infestation of pests.
frequently asked Questions
  • Why is it that my once-beautiful cactus becomes very soft? - This cactus was cast too often and is now rotting. If the whole cactus has already softened, no rescue is possible. If the rotting is still in its initial stages, stop casting immediately. Start again after a few weeks, but only water a little.
  • My cactus has strange outgrowths. They are similar to a small cauliflower. What could that be? - This is probably one of the rare viral diseases. Rigidly cut or scratch out the affected areas.
Worth knowing about the Bischofsm├╝tze shortly
Characteristics
  • Height: 2.5 - 30 cm
  • Width: 7.5 - 15 cm
  • Temperature: 16-21┬░ C
  • full sunshine location
  • cactus
  • Origin: Mexico
species
  • Astrphytum asterias: grows slowly to a flattened ball of 2.5-5 cm in height and 7.5 cm in width. The eight flat ribs bear white scales on the edge.
  • Astrophytum capricorne: up to 25 cm high and 13 cm wide. The eight flat ribs bear white scales occupied at the edge. The eight ribs have curved black, brown or reddish spines.
  • Astrophytum myriostigma: softens to a height of up to 20 cm and 15 cm wide, forms five to six ribbed segments and is often covered with white scales.
  • Astrophytum ornatum: a species up to 30 cm high and 15 cm wide, is gray with a darker outline and banded white scales. From the ribs grow strong spines, which are initially yellow and later turn black. The first flowering takes place in this species after about 10 years.
maintenance
Astrophytum feels most comfortable in a room temperature of 16-21┬░ C and in full sun. In the winter is not poured at all (see also wintering of cacti), otherwise always sparingly, as soon as the earth dries up. When the roots in the planter crowd, is repotted.

Video Board: Slicing Open Bishops Cap (Astrophytum myriostigma).

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