Everything I grow is without synthetic fertilisers. Though not easy to scale up.

Is it made of oil? Thought it was gas to produce the hydrogen, so it’s only used because it’s currently cheaper.

As renewable production ramps up and we get more time with free/very cheap energy, that might change the economics behind hydrogen production. So at least from a technical perspective it should be a fairly easy one to move off fossil fuels once we have more alternative energy sources.