I want to make a cereal farm but i run out of seeds and that. If someone could help me by telling me how many bots and what hey do it would be very helpful.

First you should clear all the weeds and place fertilizer on the soil to make weeds not appear again

 So you will need:

1. A bot who harvests the crops

2. A bot who collets the crops

3. A bot who makes seeds

4. A bot who plants seeds

(That is what i have but you can have 3 bots with 1 making seeds and planting them but i think that would be worse)

Also you make seeds in a Cereal Seeder (1 cereal = 2 seeds)