Gardening

Old ground


Question: old land


I have to plant jasmine plants on my terrace I wanted to know if I can use the soil that I already have in some pots, allowing that it is a soil that has been there for 10 years without ever having been treated, mixing it with new soil I can use it?

Answer: old ground


Dear Salvatore,
the main reason why the use of old soil is avoided, is that which, usually having been used in pots, is often now lacking mineral salts, and also its structure is often scarce, so it is not a good soil to cultivate plants. A soil that has never been used to cultivate anything, but has remained in a container for ten years, may not exhibit this problem; but in general these soils, especially if placed in pots, are colonized by parasites of all kinds, the most striking of which are the larvae of oziorrinco or of beetle, which would be very harmful to your jasmine. The new and fresh soil, besides being rich in mineral salts, is also disinfected and deprived of any pests before being sold. For this reason I would advise you to use new, high quality soil, also because your jasmine will live in that terrain for all the months to come, and if you are placing them in a large vase, you will hardly be able to repot them tomorrow, replacing everything the exhausted ground. If you have a garden, use the old soil to mix it with the ground of the flower beds, after having sifted it in search of parasites; or put it in the composter, so that it regenerates, incorporating decomposed material.