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Brief tutorial on planting cactus in natural light and heat: the various stages of the procedure

I usually sow between the end of March and the first week of April, always in natural light and heat. This year, given the unusually low minimum temperatures, I had to postpone it until mid-April. In these days I have taken advantage of the raising of the lows and the improvement of the days to sow some seeds that I obtained from my pollination last year and some recently purchased seeds. I sowed cacti exclusively: Copiapoa, Gymnocalycium, Pyrrhocactus, Astrophytum, Lobivia, Escobaria, Frailea, Leuchtenbergia, Ferocactus, Thelocactus and more. The seeds had been cleaned immediately after harvesting and stored properly. I have written several articles on sowing: you can find everything in this section of the site: sowing.

In this article I thought of creating a sort of sowing “tutorial”, photographically documenting all the various steps involved in my method. It’s good to specify it: it’s simply my method and I’ve been following it for years now, but it doesn’t mean that it can be good for everyone or that it can be comfortable for everyone (…).

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Diseases and pests of cactus and succulents: how to recognize them and how to prevent their attacks

As much care as we can give to our cacti and succulent plants, some drawbacks with parasites, pests, infections and fungi can always happen. Unfortunately, it must be considered, particularly if you have many plants. With proper cultivation, however, the problem can be significantly reduced and the number of losses caused by animal parasites and bacteria can be considerably reduced. It may seem obvious, but the first and most effective tool for the fight against pathogens and harmful insects is prevention. Prevention is done through a cultivation regime as natural as possible that respects the cycles and times of plants without forcing their growth. Just in this way cacti and succulents grow healthy and robust to the point of being able to cope with adversities on their own. In the last few years, thanks to natural cultivation and treatments based on pesticides reduced to a minimum, I have no longer observed any attack on my plants by animal parasites. Sometimes I may have some losses due to Fusarium, but they are single specimens, never large scale infestations.

In the following article, we will see in detail what consists of prevention; which are the pests and diseases that can affect cacti and succulents; such as the symptoms of their action on plants, and how to carry out treatment and care in case of problems. (…)

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When and how fertilize cactus and succulent plants to have aboundant blooms

First of all: why should we fertilize our cacti and succulent plants? Let’s say right away that fertilization (or fertilisation, or manuring or mineral nutrition) is necessary for any plant grown in pots, since the amount of soil available is limited and, sooner or later, nutrients will begin to run low. Fertilizer nourishes the plant, enriching the soil of those elements which, through the time, are absorbed by the plant or washed away by the waterings. Succulent plants should be regularly fertilized to ensure that the right quantity of nutrients is always available during the growing season. For cacti and succulents, however, generic fertilizers should not be used. In other words, a fertilizer commonly used for ornamental, leafy or fruit plants is not at all appropriate for a cactus plant. It is necessary to resort to specific fertilizers, specially balanced for the succulents. Otherwise, the risk is to irreparably compromise the growth and the physical appearance of the plant, making it weak and radically different from the specimens of the same species that grow in the wild.

In the following article we will go deeper into the subject, let’s see what elements succulents need, how the suitable fertilizer must be composed and how much to fertilize during the year. (…)

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How often and how much to water cactus (cacti) and succulent plants and which water to use

Watering is still one of the most debated themes among those who approach the cultivation of cacti and succulents in general. How much water do cacti want? When should succulent plants be watered? How often should succulents be watered? These above are just some of the most frequent questions – and I fly over, for obvious reasons, on another question that I have often heard asked: But should cacti be watered…?

Like any living thing, succulent plants need water. How, how much and when water depends on many factors, such as the time of the year, the place where you live (North or South Italy, for example?), temperatures, environmental humidity, the substrates you use, the size of the pots, and more… Before going into the details of watering, let us sure to definitively put aside false convictions legacy of who knows what experiences at the edge of the absurd. For example, let’s get the fact that cacti and succulent plants have to be watered with droppers or watered once in a blue moon.

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How to repot cactus and succulent plants: in which period, how to proceed, which tricks to use

Some growers repot every year, while some others repot when required – i.e. when a plant shows signs of suffering or when the pot has become too small related to the stem. There can be many reasons for repotting (or racking, as someone says alternatively) a cactus or a succulent plant, and every grower has his own rules. As for me, I don’t have “fixed deadlines”: I evaluate plant by plant trying to understand if new soil and more space are needed. I repot my succulents when I see that the vase is now too small, when I believe that the soil has exploited or when I want to grow specific specimens more quickly. While it is true that many plants live quietly in the same container for five or six years (in many cases even longer!), it’s also true that frequent repottings (once a year or every two years) help to speed up the growth of cacti, particularly young plants and genera that over time take on considerable sizes, such as Echinocactus and Ferocactus. I repot, also, when I notice that a plant has blocked for a long time and it doesn’t grow or produce new thorns. It can be the spy that something, at the root level, is going wrong. A plant that doesn’t grow or doesn’t swell despite watering, or, again, a plant that loses its colour (showing, for example, a lack of magnesium that not even fertilization can solve) can be saved by a repotting, with the cleaning of roots and the supply of new soil.

So let’s see in this article in which period it is better to repot cactus and succulent plants, which pots to choose (square, round, terracotta or plastic), how to check the roots and how to proceed in practice. (…)

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Il fiore tra le spine

Due o tre cose che ho imparato su cactus e piante grasse

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