The best spring crop plan is not always the one with the highest theoretical return. A useful plan fits your watering capacity and still leaves time for mining, fishing and town progress.
Match crop size to watering capacity
A field that consumes the whole morning can reduce total progression even if the crop itself is profitable.
Keep some cash flexible
Reinvest in crops, but avoid tying every coin up in one cycle when tool upgrades or other opportunities may appear.
Protect energy for other goals
Farming should support the rest of the day rather than eliminate it.
Use a crop mix that fits your goals
Balance dependable income with flexibility instead of relying on one large field immediately.