Stack what you can confirm—do not chase a made-up multiplier
The Roblox game description says crops can roll multiple mutations at once. It specifically names Gold, Rainbow, and Prismatic totems and invites players to hunt a legendary triple. That confirms the stacking goal, but not a complete rate or value formula.
Before spending cash or leaving a valuable crop exposed, check the live crop card, totem screen, or value change you can see in your server. Save the observed weight, customer bid, growth time, and any multiplier shown on screen. You can compare those observations in the Crop Lab without treating a community guess as official data.