Severed

Offering is the only way to get Severed. The weather notes ask you to offer a fruit in front of your garden, and doing so gives a higher Severed fruit chance, so this is one of the few mutations where the player does something deliberate to trigger it.

The x40 is 70th of 192, in a four-way tie with Blizzard (Yeti Night), Subzero and Corrosive, with Gourmet and Supernatural at x37 just below. Severed is also half of a combination: the wiki lists Sliced plus Severed as the recipe for Slashbound, a x95 mutation, so a Severed fruit that also catches Sliced from Jandel Katana is worth more than double its own multiplier once fused. Its neighbor Subzero at x40 is weather-based too, coming from Route Runner or Frozen Ice King.