AncientAmber

Ancient Amber multiplies a crop's base sell value by x50, a respectable mid-tier boost that sits comfortably above the small environmental procs but below the elite hundred-plus mutations. The visual cue is refreshingly simple compared to the flashier swirls and glows of higher-tier effects: an Ancient Amber crop is identified by orange particles drifting off the produce, so confirming it has landed takes only a quick glance.

That clean, restrained tell fits the fossilized-resin theme and makes Ancient Amber easy to verify at harvest time, which matters when you are sorting a full garden and deciding what to sell versus hold. A x50 swing turns a modest crop into a meaningful sale and a premium crop into a strong one.

Because mutations in Grow a Garden multiply rather than overwrite, the smartest play is to let Ancient Amber stack with growth mutations and a high-rarity base so the x50 compounds rather than acting alone. On its own it is a solid, dependable multiplier; layered onto an already-mutated heavy crop it becomes genuinely lucrative. Verdict: not a top-of-the-board chase, but absolutely worth keeping whenever those orange particles appear on a valuable harvest.