If you don't live in a tropical climate you may need artificial grow lights in order to grow seedlings and plants during the colder months of the year. The reason being seedlings and plants rely on sun for their enlargement and then they want it for about 10 to 12 hours each day. Grow lights for indoor plants buildings at the colder environment zones on the planet it is far from very easy obtain that very much lighting.
So if you want to have a nice garden with young plants each spring, you will have to provide your seedlings and plants with the correct environment during the colder months. The good thing is with the developments in products nowadays we find quite affordable vegetation raising Led plant lights of various versions available in the market for writing the correct habitat.