If you are thinking of starting to grow bonsai you should choose species that are easy to grow, fortunately there are some more resistant and not too expensive species. When we start in this hobby normally our first experience ends in failure, we do not know very well why it happens if we have given our tree the best care and much affection.
The first mistake is to have them indoors, they are trees and as such need sunlight and fresh air, inside our homes the light is not usually adequate and heating ends up killing them in a short time. They have to be outside, in a garden, terrace, or on the window sill. If we ever put them inside to exhibit them as much will be for one or two days.
The second mistake comes when choosing the genus and the species, we do not stop to think if our orientation is adequate, if we have enough knowledge or we can have access to them to get that bonsai that we like to survive.
Bonsai easy to grow
Olive tree: the olive tree is pretty and quite resistant. Holds the cold; but watch out for very strong frost. They must always be cultivated abroad.
Elm: elm trees are very hard too, the best when it comes to getting started.
Ficus: the ficus is another easy species. You can have them indoors all year round, even if it is not recommended.
Buxus: any of the species of the genus is easy to care for and maintain, harlandii is very striking because of its bark although it is somewhat less resistant to cold than common, buxus sempervirens, is found in hedges and garden nurseries.
Carpinus: it resists perfectly low temperatures, -5ºC without leaves and -3ºC when it begins to sprout. The colorful leaves in autumn and the small size of these make it very indicated in bonsai.
Punica granatu: it resists the cold perfectly and a little care that we give it gives us flowers and fruits of an intense red color.