Piante grasse cactus spine

Tag: cactus

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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The distribution of cacti and succulents in the world: maps with the states where they grow

Have you always wondered what part of the world your cactus or succulent plant comes from? From the Americas or maybe from Asia? From Africa or Europe? The topic of succulent plant distribution is vast and very intricate. However, to begin to simplify, we can say that all cacti are native to the Americas, while succulent plants in general (i.e. non-cactaceous succulents) come from different parts of the world.

In this article and in the two large maps attached, we see how cacti and non-cacti succulents are distributed around the world. We see in particular from which geographical areas the succulents originally evolved. (…)

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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 much light do cactus need to grow well? The importance of sun and air and a summary table

Light is fundamental for every living being, starting with plants. This is obvious, but we cannot ignore it if we want to grow cacti and succulent plants in general. Plants, moreover, that often need many hours of light per day; in some cases direct or non-filtered light, in others not straight but equally intense daylight. In fact, there are succulent plants that, if placed in full sun, slow down growth, burn and even die. On the contrary, many succulent plants and many cacti, if they do not receive the right amount of direct light, will have stunted growth, with weak thorns and elongated stems.

In this article, we see what we need to know about the right exposure of cacti and succulent plants in general. Also, at the end of this article, you find a table summarizing the type of exposure needed by the main families of succulents. (…)

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Substrate, loam, soil mix: which is the best soil for cactus and succulent plants?

I may look like a mordant, but I want to clear the field of misunderstandings and false myths: the right soil for cacti does not exist. There are many types of soil (or composts, substrates, mixtures, the question does not change) and there are genera that prefer certain substances and others that require more. Established this and removed one of the first Faq (Frequently Asked Questions) by cacti enthusiasts to the first arms – “Which is the best soil for my cactus?” – it can be said on the contrary that on the one hand there are the characteristics that a good soil for cactus must necessarily have; on the other hand the needs of the single plants. The question was simple and the related answer was given by italian cacti expert Giuseppe Lodi, who, after observing “the butts of roots of certain imports” and having noticed how these were encrusted with clay loam, suggested a base soil absolutely natural and versatile: “You can start from a mixture of common clay loam (field or garden), coarse sand and leaf soil, in equal parts. Of these three components none of them can be enough, alone” (Giuseppe Lodi, “Le mie piante grasse” – Edagricole).

Except perhaps for the difficult availability of the loam of leaves (be careful to go for the woods and get bags of decomposed foliage: there are fines for collections of this kind), the recipe provided by the Italian pioneer in the cultivation of cacti and succulents was more than sensible, as well as experienced. Considering the difficulty of finding the loam of leaves (Lodi suggested leaves of beech or chestnut), that moreover must be well decomposed (and it may contain fungi and bacteria dangerous for the plants), this element can be replaced by good quality peat, sieved fine, without lumps and filaments. Too bad that over the years we have forgotten Lodi advice to focus everything on what for many is still the standard substrate of peat, lapillus and pumice in equal parts, standard enough to fit any kind and species of succulent.

In the following article now we see which is the best substrate for growing cacti and succulent plants based on my experience over the years with proofs and experiments on various mixtures. (…)

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