User blog comment:Eric.HP/Big idea : Sun shine and Moon shine?/@comment-26247852-20151126143002/@comment-27260621-20151126201935

exactly ... in this case:

1) you use sun flowers or sun bean instead of sun shroom

or if you want to use sun shroom, you need to:

2) have a combination of moonflower and sun shroom

The advantage of (2) is that you have both currencies, which lets you to have more plants options to use as each plant uses a certain currency. The bad thing is that you need 2 seed packets.

More plants option = more seed slots used (seems pretty fair)