I start early, any seed i can find plant them as quickly as possible. And later start to plan harvest cycles, and calculate how much food is needed. For early game its mostly canned / found food just to survive. When essential survival things done. Like small base of operations, camp fire, etc done. Ill go hunting and scouting as much time gives me to do before 7th day horde. Also reserve little time to prepare defenses for the horde of course. (In dont make underground bases, my own game difficulty choice)
Blocks.xml contains the values for these. Values are in game minutes. So default 60 minute day, has 40 min light, and 20 minute night time.
So trees and crops will grow only during those 40min period. So adjust accordingly for your own game preference.
This handles crops:
<block id="119" name="cropsGrowingMaster">
<property name="PlantGrowing.GrowthRate" value="1200.0"/> <!-- Default 63 setting 1 is erratic. Recommend 2+ for testing or use -->
This handles trees:
<block id="129" name="treeMasterGrowing">
<property name="PlantGrowing.GrowthRate" value="2400"/>
There is still some mystery on those timings, and haven't played long enough to test them well enough. There seems to be some kind of randomized part where daily growth is changed, than being constant rate.
Only bad thing is that when you find fields in towns, they seem to be in stage 2 growth already. So they grow much faster, and gives quite infinite food source. If these fields could be little bit more limited. It would increase difficulty on survival part nicely.