Here is the “survival garden” that was featured on Doomsday Castle’s episode “Be Fruitful and Multiply”.
The son, Michael, visits the actual Secret Garden of Survival and takes a tour on Rick Austin’s property to see how he can build his own survival garden at the Doomsday Castle.
Then Rick shows up at the castle with trees and plants for the beginning of the Castle garden, and Rick, Michael and Dawn-Marie work together to plant using Rick’s system.
If you want to learn more about growing more food than you can eat, without chemicals, here are links to Rick’s books:
Secret Garden Of Survival : How to Grow a Camouflaged Food Forest
: https://www.amazon.com/gp/product/1481839772/ref=as_li_tl?ie=UTF8&tag=survjane-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=1481839772&linkId=110150bb230398bf9b7d335dbcac5eba
Secret Greenhouse of Survival : How to Build the Ultimate Homestead & Prepper Greenhouse
Secret Livestock of Survival : How to Raise the 10 Best Choices for Retreat and Homestead Livestock
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