Sweet Potato

Unlocks once you've harvested 560 Green Tomato, 260 Beetroot, 250 Green Bell Pepper and 90 Cucumber in all; unlocking it is then free.

A seed costs 50 spare parts and grows for 10m 54s (8m 43s on fertilized soil), needing water 7 times on the way: it stops growing until it's watered. It gives 15 harvests, growing back from scratch after each one.

Each harvest is one Sweet Potato and 19 spare parts: 285 from one seed, 235 more than it cost, over 2h 43m of growing. In a Biofuel Converter each one is worth 14 biofuel.

A Reaper chip can improve its grow time, watering, harvests, biofuel or earnings.