Piante grasse cactus spine

Tag: cactus

Sudden changes in temperature and first colds: with cacti and succulents there is nothing to fear

From the highest peak to the lowest, about thirty degrees Celsius passes. This is the sudden change in temperature to which my succulents (90% cacti) have been exposed in recent weeks, almost all kept in the greenhouse which is still rigorously open 24 hours a day. All the Agaves remain outside the greenhouse, some Aloes, various Opuntia, Tephrocactus, Pediocactus, some Echinopsis and some cacti that I placed in the ground for experimentation. Can such sudden changes in temperature damage plants? Are nighttime lows starting to get too low for cacti and succulents in general?

There are many who wonder and, since I have received several messages in this sense, I have decided to write this short article to answer these questions. (…)

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Marl as a substrate for cacti: is it really so good? How to use it and with which plants does it work

The use of marl as a substrate component for the cacti’s cultivation has been widespread for years, especially in Italy. Thanks to the studies and research conducted by my friend Andrea Cattabriga – grower, researcher and succulent expert at the international level. But what are we talking about, when we discuss marl? Quite simply, a greyish and highly friable rock, to the point of breaking up into flakes until it becomes powder. It’s used to create substrates for the cultivation of many cacti and some succulent plants when combined in some dosages with other materials such as quartzite, pumice, sand, gravel, lapilli, peat, field soil (clay).

In this article we explore the benefits of using marl in cactus cultivation, we see how to make a valid marl-based substrate, and we try to understand, above all, with which kinds of cacti this material can work and with which ones it should be avoided. (…)

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Schlumbergera, the “Christmas cactus”: how to make it bloom in all its abundance

As every year, between the end of November and the first half of December, my Schlumbergera blooms. As always, the blossoms are very abundant, with inflorescences on every “article” of the plants. These are very common, thornless cacti that I consider a classic “houseplant”, but no less interesting, than other genera. Let’s start by saying that Schlumbergera are for all intents and purposes cacti (family Cactaceae). They are epiphytic succulent plants that in nature live leaning on other plants that simply act as a support (epiphytes are therefore not parasitic plants). This genus, also commercially known as “Christmas cactus” because they bloom at this time of year (actually they bloom from November), is very beloved even among non-succulent enthusiasts.

In this article, we’ll learn how to cultivate the “Christmas Cactus”, for obtaining its abundant blooms without any problems. (…)

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Repotting cactus: the classic mix of pumice, lapillus and peat to speed up growth

I generally start repotting from mid-December onwards, to finish within the first few months of the new year. This year, considering the number of plants I sow that need repotting, I started well in advance. Despite the still high temperatures for the period, in fact, the plants are already in stasis and it is possible to proceed without problems. The repotting period is one of the most debated topics, together with the composition of the growing soils: there are those who repot only plants in vegetation, those only in spring, those during the winter and those who repot at any time of the year. Let’s say that there isn’t a fixed rule: over the years, I have repotted practically in all seasons, according to needs, and I have never encountered any problems. The important thing is to stick to that only really useful precaution which is to avoid watering immediately after repotting. It is necessary to give the damaged or cut roots time to heal in dry soil during repotting, so as to avoid the risk that they may trigger rot. The rest is a matter of choices. Personally I prefer to repot and change the soil to the plants during the winter season, or in any case when the cacti and succulents are in vegetative stasis, for example just before spring, so that several weeks elapse between repotting and the first watering. I’ve been following this “rule” for years and have never had a problem. Of course, it may happen that some plants find it difficult to restart after repotting, to the point of being stuck even for a whole year, but this can happen by repotting at any time. Let’s not forget that repotting is in any case a significant “stress” for plants. This is also why I prefer winter, when the cacti are at rest and the effects of repotting are less “traumatic”.

Let’s explore the topic of repotting and substrates for cacti, in particular the “standard” soil based on pumice, lapillus and peat in equal parts, in the following article. (…)

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How to make cactus and succulent plants bloom: what you need to know and what tricks to use

How to get cactus to bloom is one of the most frequently asked questions among succulent plant enthusiasts. Here are the precautions to take to make our cacti flourish.

Colourful, flashy, ephemeral. Cactus blooms are sudden bursts of energy. Often the buds develop in a few days to open within few hours, amazing the newcomers to the cultivation of these plants and, above all, those who are not familiar with succulents. In these last few years, I have noticed that there is a lot of misinformation about cacti, in particular about their blooms. Those who do not cultivate these plants can even be surprised that they can bloom, no more or less than the specimens of all the other plant families, forgetting that the flower is the basis of the reproduction of almost all plants. Others are impressed to learn that even cacti can bloom in abundance and several times during the growing season, thinking perhaps that the flowering of a cactus is an exceptional event, almost unique. Nothing could be more wrong: all the cacti regularly bloom, and if there are relatively stingy species, that can produce few flowers for limited periods during the year, there are also really generous species, able to give blooms several times for entire months (for example Echinopsis, Astrophytum, Strombocactus, Gymnocalycium, Trichocereus).

In the following article we see in detail how to make cacti and succulent plants bloom abundantly. (…)

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