Piante grasse cactus spine

Tag: ferocactus

Succulent plants, a small guide for those approaching this world: the simplest species to grow

The world of succulent plants is extremely vast. It follows that the cultivation needs of individual succulents can vary considerably from family to family and from genus to genus. With a concrete example, a cactus (plant belonging to the Cactaceae family) has extremely different cultivation needs compared to an Adenium obesum (succulent plant belonging to the Apocynaceae family). Likewise, large differences in cultivation can occur within the same family or between different genera of a single family. Here too is an example: an Ariocarpus (genus belonging to the Cactaceae) requires a cultivation regime, understood as substrate, watering, etc. very different from an Echinopsis (genus always belonging to the Cactaceae).

Without dwelling too much on the broad field of plant classification (here, if you want, you will find an article dedicated to this topic) and taking it for granted that the term “succulent plants” refers both to cacti and to many other succulent botanical families whose specimens have a different appearance from any other cactus, we are addressing a very “heartfelt” topic among novice growers. Even the grower who boasts a good knowledge of a given family, however, may find the following article useful, which recommends succulent plants (belonging to various botanical families) that are less demanding, more robust and simple to grow and therefore more suitable for those who are only now approaching the world of succulents. (…)

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Be careful of winter blooms: rot can start from here. Here are the species at risk

Unfortunately it is a less rare phenomenon than one might think. The flower itself, the maximum expression of the plant, its instrument for reproducing and safeguarding the species, can transform itself into its executioner. With cacti, plants that require seasonal rest corresponding to the winter months, the flower can sometimes be fatal. It obviously only happens with those species that flower in mid-winter, therefore a small minority compared to all cacti. But it is often precisely from there, from that flower that blooms in November, December or January, that the rot is triggered and which, if neglected or not seen, can lead the specimen to death. This is what happened to two of my Ferocactus latispinus in recent days. Or rather, in the past few weeks, except that the damage has become apparent recently. And now it was too late to intervene and save the plants.

In this article we look into this phenomenon and see what can be done to prevent it or, at least, be able to intervene before the rot passes from the flower to the plant. (…)

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Johnstonianus, the most beautiful and sought after species of the entire Ferocactus genus

Living tangles of incredibly intricate spines, “globes” wrapped in beautiful, deep yellow spines. This is how Ferocactus johnstonianus could be defined, perhaps hastily but at the same time realistically. We are talking about one of the most appreciated and sought after species among enthusiasts of the Ferocactus genus throughout the world. These are relatively uncommon and poorly propagated plants, not easily available on the market. They also do not grow quickly, and perhaps these are some of the factors that contribute to fueling the charm of johnstonianus. In these days of repotting I have had the opportunity to focus on some specimens of this species that I received a few years ago from my friend Francesco Soldi, a highly experienced italian grower especially with regards to the Ferocactus genus, although today he is concentrating on the Echinocactus genus and in particular on the horizonthalonius species. Well, the plants I got from him a few years ago initially grew very slowly – mostly my fault, because I put off repotting for a long time and used an excessively poor substrate – but in the last two years, also thanks to a slightly richer substrate, have recovered and today they are well characterized and proportioned and are starting to show their full potential.

In this article here is an in-depth look at this splendid species. (…)

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The thorns of cacti: what they are for and why these plants have abandoned their leaves

Just as we find a wide variability of shapes and colors in the leaves of botanical species in general, which can be flat, fleshy, needle-shaped, ovate, heart-shaped, lanceolate, etc., we find the same variety in the thorns of cacti. Over the millennia, evolution has led to a remarkable range of shapes and colors, with spines that can have a papery or elastic and very fine consistency or, again, appear rigid, squat and short, long and broad, flat or tapered, sharp, hooked, black, gray, white, red, yellow. In general we can say that cacti are the only plants to have thorns, since in other specimens of the botanical world it is not entirely correct to speak of real thorns. Let’s think of the common roses: what we call thorns are actually excrescences that are produced along the stems, alternating with the leaves, which cacti do not have. So what exactly are thorns and how did cacti come to evolve with these “weapons” along the stem? What is the function of the spines in cacti? Why are some pointed while others are hooked? And why are there also cacti that have no thorns at all?

We will answer all these questions in the following article. (…)

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How a cactus changes depending on the type of cultivation: the difference made by soil and exposure

When they say that a picture is better than words. In this case, there are three photos, but the concept doesn’t change, and the difference between a cactus grown in a “natural” (or “wild”) way and one with a “garden-style”, based on basic notions and beliefs is quite evident. The plants I’m writing about are Ferocactus latispinus obtained from a 2012 sowing of mine. From that same planting, I’ve got at least forty plants. Over the years, I have given away some of them, but most are still with me and are growing beautifully. It’s important to point out that these are plants born from seeds contained in a single fruit (gift of a dear friend), sown the same day and grown over the years in the same conditions, i.e. in my greenhouse, in standard soil (pumice, lapilli and peat in equal parts), watered and fertilized with the same frequency. This is to say that the starting conditions, including the genetics and the grower’s hand, are the same. And yet, as you can see from the photo above, where the three plants (three at random of the twenty-five or so that I have kept for myself) are side by side, they show remarkable differences, at least to the discerning eye and the grower with a minimum of experience.

So let’s see, in this article, how and why different cultivation regimens, assumed as a whole and not just limited to the soil, affect so much the final result and really make the difference between a cactus grown and cultivated in any garden or generic nursery and a cactus grown by an enthusiast or an expert. (…)

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