Oooh, nice rewards we get from the event, and I really like the heart tree. Do we need to buy an outfit to take part in the event?
No, but I'm not sure how you get the "S" seeds needed. The girl has only been giving me a new "B" seed, which grows a small tree with blue apples.
You also get rose bush trees from her too. I will ask a friend for help.
The B seed that the girl gives is for the little apple tree, if you do a flower version of it with B+ it will have red roses, give the girl 2 of the red roses trees, and in return she will give you the ring/bracelet and 6 S seeds(make sure you have space available), for the scarf and mittens you need to give the girl 4 of each S+ flower, S++ flower and any of S or S+ or S++ fruit (heart with ribbon)