Rare succulents: because they are rare
Which and how many are the rare succulents? The species of succulent plants are numerous to the point that it is impossible to provide a complete classification of rare succulents, often the exclusive preserve of collectors. The most frequent opportunities to see them correspond to specific events. It is worth noting that the rarity of a succulent plant does not uniquely identify the botanical genus, but may concern, for example, dimensions. In fact, a plant can be defined as rare when it is particularly difficult to cultivate or if it is found in nature with difficulty. For example, there are rarities determined by the special conditions of exposure and climate: in short, while different species disappear (assuming, in turn, the title of rare plants) because of the action of man, others have to deal with a capacity reproductive naturally poor, possibly combined with a very slow growth that, as a main consequence, jeopardizes its survival.
The most known specimens
The reference is to species such as the minimum acebaria, the ariocarpus, the euphorbia ambovombensis, the mammillaria pectinifera or the strophytum asterias. On the other hand, they can be considered rare succulents also succulents that, although present in nature, are found in practically inaccessible places, and therefore are difficult to harvest (and consequently to cultivate). It is the case, among others, of Discocatus, which proliferates between the cracks of the rocks, making its collection practically impossible. There are also cases of rarity simply determined by the anomalies of the species: just think of the crests, characterized by spectacular and unrepeatable crest forms, unique and difficult to represent. That said, among the rare succulents it is worth mentioning the aztekium hintonii, belonging to the genus of cacti and coming from Mexico. Without thorns and rather small, it is cultivated with difficulty due to the rather slow growth. In fact, within ten years a similar plant does not reach ten centimeters in height; whoever wants to try to buy it, will spend at least fifty euros. The ariocarpus is also very rare, in its turn belonging to the cactaceae. Originally from Mexico, it is characterized by the same very slow growth; moreover, it is rather delicate, and in most cases it dies suddenly because it is subjected to incorrect crops. It costs about thirty euros, and in five or six years it can reach a maximum of five centimeters in height.
How to cure and maintain a rare succulent plant
Rare fat plants, as you can easily imagine, need constant care and maintenance. To think that succulents do not require irrigation, for example, is a mistake as coarse as it is potentially dangerous. The waterings, therefore, must be diversified according to the period: completely suspended during the winter season, carried out once a month if the temperature goes beyond fifteen degrees. If you have doubts about the timing of water supply, you can never be mistaken if watering is practiced only when the soil on the surface is completely dry. Like many plants, in fact, even the fat ones suffer from an excess of water, and the appearance of water stagnation risks making them rot or die prematurely. If desired, water can be sprayed on the stem and on the leaves, creating a dew effect, using a simple nebulizer. The important thing, on the other hand, is to pay attention to the younger species, which must be wetted only on the ground, and those coated with waxy substances, which require the same treatment: if wet on the leaves, in fact, they risk losing their natural protective layer. Rare succulents placed in greenhouses more easily withstand winter weather conditions if they are left completely dry. All the waterings must be blocked when the thermometer goes below five degrees. On the other hand, it is absolutely essential to check that there are no drafts and drafts, but above all drips coming from above, which could cause deleterious rots.
In short, it can easily be noted that, while common succulent plants generally require limited attention, rare ones, precisely because of the cultivation difficulties that often distinguish them, the particular conditions they need to grow and natural habitats in which they are used to being born require a much higher dose of care.
Rare fat plants: Cultivation in pots or in boxes
As for the cultivation in pots, it will be important to rely on containers whose dimensions allow free root development: large pots, therefore, but not too much, because an excess of earth (and therefore of water) could prove harmful. The best vases should be those in terracotta, which guarantee excellent transpiration and therefore the right oxygenation of the soil; but rare succulents show that they can survive even inside metal containers. An alternative often overlooked but definitely valid is represented, instead, by the boxes, which favor the absorption of nutrients by the roots.