In addition, it is more dependant on modern supply chains. Modern farms are already pretty dependant to get their yields.
We should think long and hard if we want a long term power outage to cause food shortages.
Wait...
https://www.scientificamerican.com/article/plants-versus-pho...
Chewing on bark will work, if you have enough bark, but it’s significantly more effective to use a fungus as an intermediary.