Dear Momo,
yes,,for sure ,you can have your own beautiful garden even
you live in a very small house, as long as you have passion and interests,
at first, I and my family start to eat organic vegetables for heath purposes
after that become curious how to plant ourselves organic vegetables for my own ? that's how I end up start to plant vegetables and flowers.
If you want to learn how to plant flowers, I can recommend my friend to you
who can teach gardening,please let me know.