Value

Grape:

Time: 5 Minutes
Cost: 5 Gold
Payout: 50 Gold
Profit: 45 Gold
Per hour profit: 540 Gold (Planting every 5 minutes)
Profit with Reduction: 1,080 Gold (Planting every 2.5 minutes)


Flax:

Time: 30 Minutes
Cost: 25 Gold
Payout: 100 Gold
Profit: 75 Gold
Per hour profit: 150 Gold (Planting every half hour)
Profit with Reduction: 300 Gold (Planting every 15 minutes)


Carrot:

Time: 1 Hour
Cost: 50 Gold
Payout: 150 Gold
Profit: 100 Gold
Per hour profit: 100 Gold
Profit with Reduction: 200 Gold

Wheat:

Time: 24 Hours
Cost: 100 Gold
Payout: 550 Gold
Profit: 450 Gold
Per hour profit: 18.75 Gold
Profit with Reduction: 37.50 Gold


Tomato:

Time: 8 Hours
Cost: 150 Gold
Payout: 400 Gold
Profit: 250 Gold
Per hour profit: 31.25 Gold
Profit with Reduction: 62.50 Gold


Cabbage:

Time: 12 Hours
Cost: 200 Gold
Payout: 500 Gold
Profit: 300 Gold
Per hour profit: 25 Gold
Profit with Reduction: 50 Gold


Cotton:

Time: 14 Hours
Cost: 250 Gold
Payout: 600 Gold
Profit: 350 Gold
Per hour profit: 25 Gold
Profit with Reduction: 50 Gold

Cocoa:

Time: 16 Hours
Cost: 300 Gold
Payout: 700 Gold
Profit: 400 Gold
Per hour profit: 25 Gold
Profit with Reduction: 50 Gold


Corn:

Time: 2 Hours
Cost: 40 Gold
Payout: 175 Gold
Profit: 135 Gold
Per hour profit: 67.50 Gold
Profit with Reduction:  135 Gold

Oat:

Time: 3 Hours
Cost: 75 Gold
Payout: 225 Gold
Profit: 150 Gold
Per hour profit: 50 Gold
Profit with Reduction: 100 Gold

Chili Pepper:

Time: 18 Hours
Cost: 350 Gold
Payout: 800 Gold
Profit: 250 Gold
Per hour profit: 13.89 Gold
Profit with Reduction: 27.78 Gold

Potato:

Time: 4 Hours
Cost: 400 Gold
Payout: 600 Gold
Profit: 200 Gold
Per hour profit: 50 Gold
Profit with Reduction: 100 Gold

 
Strawberry:

Time: 36 Hours
Cost: 500 Gold
Payout: 1,000 Gold
Profit: 500 Gold
Per hour profit: 13.89 Gold
Profit with Reduction: 27.78 Gold

While the grape is the clear front runner, I don't think any of us are so addictive as to sit there for an hour and plant every 2.5 minutes. But hey, at least now you know.