Piante grasse cactus spine

Tag: spider mite

Reptiles, rodents, insects: how many encounters while growing succulents! Here are the ones to avoid

Even a young bat, entangled, poor him, among the deadly hooked thorns of an Ancistrocactus and died in that unwelcome embrace during the night, without my being able to notice it or do anything to free it. In many years of cultivation this has also happened to me as you will see in the photo in the article. Those who grow cacti, especially if they have a greenhouse (although singular encounters can also be had when growing them in a garden, on a terrace or on a balcony) know well that not only insects, but also many reptiles or small mammals usually slip through one plant and another. Lizards, spiders, ants, snails, mantises, small birds and mice (not so much the small ones, the so-called field mice, but the real rats, which devour any plant, thorns or no thorns) abound especially if you grow in countryside, where it is not uncommon to come across some harmless water snakes. They are abundant, in particular, if you prefer spartan cultivation, with reduced use of chemical products. Most of these “guests” do not cause any harm to the plants; still others are useful in the fight against parasites: think of ladybugs or of that little red spider visible to the naked eye that goes for a walk on the stems of cacti and which at first glance causes a stroke, but is actually a useful predator of the very harmful red spider, invisible to the naked eye (unlike the damage it causes to plants).

In this article here is an overview of the encounters with animals or insects that I have had in years of cultivation, both on a small balcony and in the current large greenhouse in the countryside. Above all, here is some useful information to understand which animals or insects are “friends” and which animals or insects are “enemy” and how to keep them at bay. (…)

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Spots on the stem and rot, here’s what you can do to save sick succulents and cacti

Circumscribed dark spots, yellowish spots, dryness, discoloration of the stems, reddening, small cuts: over time, signs of various kinds and of varying size may appear on the stem of our cacti. In some cases there is nothing to worry about, because they are small wounds caused for example by the thorns of a nearby plant, or because they are simply the signs resulting from the aging of the plant. In other cases, however, it is necessary to intervene immediately, because that spot is perhaps due to some fungal pathology destined to expand until it seriously disfigures or kills the plant. But how to distinguish a harmless thorn prick scar, for example, from dangerous rot? How to understand if that discoloration of the stem is caused by the sudden exposure of the plant to direct sun or by a lack of nutrients, or by the beginning of a fungal attack? And how to intervene to contain the damage or save the plant when the damage has already been confirmed?

This is what we will see in this article, with the help of a series of photographs that portray different situations and different pathologies. Some photos were taken by readers of Il fiore tra le spine and portray their plants: I thank these readers for agreeing to share their photos with me, thus collaborating in the creation of the following article. (…)

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Two useful products for keeping succulents healthy: Neem oil and copper oxychloride

Many cactus and succulent enthusiasts are convinced that the cultivation of these plants necessarily involves the use of chemical products against diseases and parasites. Others consider the use of these products simply as a component of cultivation to be used in certain cases; still others are not too subtle and at the cost of having healthy plants are willing to destroy their lungs, massacre bees and poison the environment. Talking to them is as useful as trying to convince an agoraphobic to take a walk in a desert. But these people, after all, grow for collection and not for love of Nature or a sincere passion for plants. This article, the result of my personal experience and therefore not to be considered as a “lesson” in an absolute sense, may be useful to everyone else. The experience has led me to drastically reduce the use of so-called “phytopharmaceuticals” or “phytosanitary products” (which do not include fertilizers), especially toxic and synthetic ones. I have undertaken this path for some years now for reasons of health protection (mine first and foremost) and the surrounding environment, considering that many pesticides have, among the various side effects, that of killing bees. The issue relating to the death of bees may seem of little importance to the uninformed, but in reality it has enormous importance on a global level from an environmental point of view.

Let’s see in this article how it is possible to reduce the use of pesticides and fungicides, limit ourselves to products with low environmental impact such as Neem oil and copper oxychloride and still have strong and healthy cacti and succulents. (…)

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Spartan cultivation in full sun, and the results can be seen: healthy plants and robust thorns

Temperatures are still above the seasonal averages, but summer has faded and autumn is on its way. Like every year, at the end of September I started preparing my greenhouse for the cold months. Nothing major, just some cleaning work, moving plants from outside to inside, a check on the heating system and two coats of copper oxychloride on plants a preventive measure. The plants themselves will do the rest, dehydrating following the suspension of watering from mid-September (from now on I will water just a few leafy succulents and, sporadically, Copiapoa and Eriosyce until the end of October) and starting to produce their natural “antifreeze” within the plant tissue of stems.

This is a good time to check the state of health of the plants and, in my case, to “draw some sums” on the results of the Spartan cultivation to which I subjected several specimens, as I explain in the following article. (…)

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