Mystical Junimo
Planter
There could be new berries from the bushes in Summer and Winter because there is none.
I forgot :PSummer has a week where there are more shells that wash up on the shore, instead of bushes. All shells stick around for an entire week, so as long as you check every saterday, you can get maximum benefit.
OkayHaving berry bushes in winter goes against the theme. Plants aren't really supposed to grow at this time. Most of the forage you get in winter involves digging things up.