Spinach

Unlocks once you've harvested 350 Potato, 180 Tomato, 140 Green Peas and 90 Pinto Beans in all; unlocking it is then free.

A seed costs 14 spare parts and grows for 7m (5m 36s on fertilized soil), needing water 6 times on the way: it stops growing until it's watered. It gives 9 harvests, growing back from scratch after each one.

Each harvest is one Spinach and 10 spare parts: 90 from one seed, 76 more than it cost, over 1h 3m of growing. In a Biofuel Converter each one is worth 8 biofuel.

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