In learning all the new and old herb combinations, I have found a slight issue with the DC on the following combinations.
The grave mold, lich grass, grey puffball, and adders tongue combination has the following DC's
one of these is set to DC22
any two of these is set to DC32
any three of these is also set to DC32
all four is set to DC42.
the other recipe for the all four combo is also set to DC42. I believe the alternate herb for the same as the three combo is also set to DC32, and I believe the one herb for the two combo is set at DC 28? I will see if that particular herb is still blooming to see what DC it is at.