Question: how to plant bonsai seeds
I bought some bonsai seeds (although I know they don't exist) but I don't know how to plant them. I bought them from a website and in the instructions they say to put them in the jar they gave me with the disks of soil and then to close it in a plastic bag in the direct light of the sun and consequently in the fridge for a few weeks, but I seems a bit cumbersome procedure ... do you have more useful tips?
Answer: how planting seeds of bonsai
I would say that "bonsai seeds" is a somewhat vague description; from what they advise you on the site where you bought them, they are tree seeds (of which species or variety I can have no idea); in general the seeds of some trees and shrubs, in nature, are contained in fruits of various types, which are eaten and digested by animals, or which fall on the ground in summer, and must wait for spring to sprout. These seeds are then covered with a sort of shell, a totally water-repellent and rigid cuticle, difficult to penetrate, which prevents the seeds from sprouting as soon as they fall to the ground. This happens because, if a plant were to germinate in August, it would find an inhospitable climate, and besides, before it could be large enough to withstand the cold, it would be in full winter. In essence, these are tricks implemented by nature to allow plants to germinate at the most propitious moment for their development.
So if you take some seeds of this kind, and simply put them on the ground, it may happen that they don't germinate at all, or you may have to wait years before the humidity and the climate make germination possible.
If you are a patient person, you can do like nature: that is you can put the seeds in the ground, in a beautiful vase, water, and place the vase outdoors, exposed to the weather; and wait until your seed sprouts until spring.
If instead you are a little more impatient you can put the seeds in a bag with a little wet sand; close the bag tightly, and place the seeds in the fridge for at least 3-4 weeks, to simulate the winter; then you will extract them and sow them in the ground; or (but it depends on the size of the seeds) you can subject them to a process called scarification: it consists in somehow removing the cuticle that covers the seeds, to allow the water to penetrate and make the seed sprout. The quickest and simplest method of scarification consists in passing the seeds lightly with very fine-grained sandpaper. If you have a lot of seeds, and a lot of good will, you can try all the methods: some seeds sow them outdoors, some put them in the fridge, and some you can sand them.