Grim

Grim is one of the darker-themed mutations in Grow a Garden, and this database row is deliberately sparse: it has no confirmed multiplier, trigger condition or description recorded, so the honest read is that its exact sell bonus is not yet pinned down here. That alone tells you it sits among the rarer, event- or pet-linked effects rather than the common weather mutations that everyone rolls daily.

What you can say with confidence is structural. Grim-style mutations in this game follow the same value math as the rest: whatever multiplier it carries is added into the same pooled bonus as environmental mutations like Wet, Chilled or Shocked, then layered over a growth variant such as Golden or Rainbow. That stacking behavior is what makes any named mutation worth the effort, even one whose number is unlisted.

Until the multiplier is verified in-game, treat Grim as a collector and theming pickup rather than a known sheckle workhorse. If you encounter the visual on a crop, hold that harvest rather than selling blind, because a high-tier dark mutation stacked on a valuable fruit can be far more rewarding than its empty stat row suggests.