In Grow a Garden (Roblox), mutations will increase the value of your crops by a standard multiplier.
They also alter the appearance of your crops, including color, texture, glow, particles, and more.
Mutations are triggered by weather events, the use of tools, or the planting of special seeds.
Most mutations can be obtained automatically when the crop is growing or fully grown.
In this guide, you’ll learn what the Oil mutation in Grow a Garden (Roblox) is, its multiplier, how to get it, a wiki, and more.
Grow a Garden Oil Mutation Multiplier

The Oil mutation gives crops a 15x multiplier.
Crops can obtain this mutation from the Oil Rain weather event.
The mutation can also be applied by the Junkbot pet.
Oil causes crops to drip black particles.
Further reading
Grow a Garden Aromatic Mutation Multiplier