Onion

Unlocks once you've harvested 60 Cabbage, 70 Leek, 70 Carrot and 10 Corn in all; unlocking it is then free.

A seed costs 7 spare parts and grows for 4m 30s (3m 36s on fertilized soil), needing water 3 times on the way: it stops growing until it's watered. It gives 6 harvests, growing back from scratch after each one.

Each harvest is one Onion and 6 spare parts: 36 from one seed, 29 more than it cost, over 27m of growing. In a Biofuel Converter each one is worth 5 biofuel.

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