Piante grasse cactus spine

Tag: light

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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Strengthening the thorns of cacti: a small experiment with some Ferocactus sowings

Based on the experiences of some growers, plants of the genus Ferocactus seem to appreciate the addition of calcareous material in the substrate. Above all, the thorns would benefit from it, which would be significantly strengthened compared to those of specimens grown in more “traditional” soils, for example the classic pumice, lapillus, peat mix in equal parts. Based on this consideration, I wanted to make an experiment with some of my sowings of Ferocactus acanthodes (seeds obtained from a dried fruit taken from an adult plant during a trip to Arizona) and Ferocactus latispinus. The acanthodes were born in 2013, while the latispinus are from 2010. Except for the seedling soil, which was based on peat, pumice and gravel, these plants grew up in the traditional compost with 30% fine peat and the rest pumice and lapillus in equal parts. I generally use this mix when I want to help seedlings develop more quickly, and then pass them into what I consider my “standard potting soil” made of sandy clay, pumice, gravel and 10% peat.

In the following article we see exactly what my experiment consists of, what type of soil I decided to use and above all we see the results with the photos taken two years after the test. (…)

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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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