1.he is going to plant some flowers.

2.i think he need to look after it.

3.yes,i think he enjoys,because he do it.

4. тут надо написать нравится ли тебе садоводство или нет?Если нет ,то почему?Ответ может быть таким:

-Yes ,i like gardening because it is very interesting.

-No,because i don't enjoy it.