I probably make a quarter ton of compost a year.I don't import manure,too much work.The rabbits and fowls supply that anyway.The fertiliser helps when I run out of compost.I only use a small amount of slug pellets when plants are small and vulnerable.Both those items store easily in watertight containers,and will be invaluable if SHTF.Right now they are cheap too.If it really was a 'grow food or starve' situation,then that fertiliser and those slug pellets would be like gold.If slugs attack those vital spuds and beans and there are no purchased nematodes or beer traps ( and the latter is a questionably effective method) then you will be in trouble.
OTOH,I don't buy tomato fertiliser. I use Comfrey liquid.I have never bought canes,I cut Hazel from the Common,and when they are past use they go in the wood stove.I save pretty much all the seed I grow too.I make my own seed and potting compost,John Innes style.
I adore gardening,but it has to be cost effective, as I like results.To borrow a mantra from NASA,"Failure is not an option"
