By God’s grace I was born and raised on a small family farm. During the 1960s and 1970s we were trying to pay off a 340 acre corn and soybean farm in northwestern Iowa and we were flat stinking broke. So we raised nearly all of the food to support our family. This required a large garden (80ft x 120 ft), an even larger truck patch (48 ft x 1,200 ft), a small fruit orchard (12 trees), livestock (caves, sheep, hogs, and 300 laying hens).
With some of the best and most productive farm land in the entire world, with better than 30 inches of precipitation, 165 frost free days, real farm tractors, planters, and cultivation equipment it took us 20 ac to feed six people. That breaks down to a 1/2 acre garden, 1 acre truck [farming] patch, 8 acre pasture, and 10 acres for hay ground and animal feed.
My point for you non-farmers out there, is that you are not going to feed yourself with a Mantis tiller and 1,000 square feet of sandy dirt that requires you to pump endless ground water irrigation just to keep your crops alive. If you committed enough to surviving that you purchase over 20 firearms and 20,000 rounds of ammo (a good start) I am suggesting that you need to consider a similar commitment to growing food.
I do not discount the importance of purchasing and storing up bulk staples, dried grain, canned goods, and freeze dried entrees, I have them as well. But I am telling you straight out that if the economy tanks anything like the 1930s, and I think it will last longer, you are going to run out of grub mighty early.
Now everyone has different skills, resources, and family commitments, but let’s consider some of the basic requirements for growing food:
Yearly precipitation
Up to a point, more is better. You typically need 12 inches to grow grass, 20 inches to grow trees, and 30 inches to grow corn. If you want to raise a really big garden without irrigation you need about 8 inches per month through out the primary growing season (May-June-July-Aug). Except for a few areas defined as microclimates I recommend that you consider living east of the dry line (100th meridian, i.e. Wichita, Kansas). Rainfall beyond 12 inches per month or 48 inches total will only make it harder to control the weeds and bugs. A maximum of 48 inches leaves out Louisiana, Florida, and the Coastal areas of the deep south A good source of local area climate data is City-Data.com.
Frost free growing season.
See these maps at the NOAA web site. Anything less than 120 days severely limits what you can grow. Remember that the folks scratching a living from the Dakotas, Eastern Montana, and most of the Rocky Mountain States are not multi crop farmers, they are either ranchers or specialist who grow crops like hard winter wheat. Any climate with between 165 to 240 days is about perfect. This translates into south of the Dakotas and North of Dallas, Texas. This is enough of a growing season for row crops and all vegetables and allow a little wiggle room for getting every thing planted on time. In the south you will be able to plant every thing directly in the garden, on the northern edge you will be starting many of your plants in a greenhouse. That said, starting plants in a green house gives them an important jump start on weeds and bugs. You should plan on one.
Microclimates
While I suggest that you should consider living in the mid-southern region of the short grass prairie, there are a number of smaller areas that provide the basic conditions for productive farming. I suggest some fine areas such and La Grande Oregon, Rathdrum, Idaho, Montrose, Colorado, where the local rainfall and warmer winters make favorable microclimates. The easiest method of evaluating an area in the arid west is to look for big commercial fruit orchards. If it grows both apples and peaches the temperature extremes will be acceptable and if you can grow fruit without pumping ground water they must get enough rain. The reason that I concentrate so heavily on living in an area with rainfall is that I anticipate that no matter what the trigger event (WMD terror strike, economic crisis, destructive natural event) we will not have enough electrical power or fuels to pump large volumes of ground water for a really long time.
Soil productivity
Black, gray, brown, and even red soil is fine as long it is loam. This means that it has organic particles (composted twigs, leaves, wood, bark, and stems) to help hold the moisture and feed the worms, bugs, and microbes that make soil really productive. Sand and gravel are fine structure but if you don’t have the worms, bugs, and microbes to aerate the soil and fix atmospheric nitrogen for the plants roots you will have to do this mechanically and ultimately you will have to add nitrogen fertilizer. [JWR Adds: It is wise to have the soil tested before making an offer on a retreat property. Soil testing is usually available at colleges and universities that have agriculture programs. You can also contact your local NRCS office or USDA Extension Office, and they can. provide information on soil testing labs in your region.
Equipment
My whole family might be able to plant and cultivate 1/2 acre without equipment. But I don’t plan to find out. For my own use I bought a 25 hp diesel tractor and basic tillage, planting, and cultivating attachments. I also bought an old Ford 8N plus 4 attachments for under $2,000. A small tractor should only burn 20 gallons per year tending a small garden and truck patch. Gas and diesel may still be available during a deep depression, it may even be cheaper, but I have 500 gal of stabilized diesel in a farm tank.
Seeds, Fertilizer, Weed & Pest Control, and Livestock
Most folks have heard about Heirloom seeds. Plant varieties that will reseed themselves true year after year. But just as important, livestock will allow you continued farming success without access to petroleum based fertilizer, weed, and pest control. I use a wheel hoe in the garden and a tractor mounted cultivator in the truck patch to kill weeds, but I would rather use sheep, goats, and poultry to eat the seedling trees and weeds when I can. Livestock manure is the ultimate fertilizer and Poultry, particularly ducks, geese, and guinea hens will help control the bugs and deliver the fertilizer at the same time. Personally, I can not imagine trying to control weeds and bugs without my livestock.
Fences, Shelters, Ponds, and Trees
These are some common land improvements that are best built and planted before the crunch. [With most common soils] an agricultural pond will not efficiently seal and hold water for 2-3 years, fruit trees take 3-5 years to bear fruit heavily, and my Pecan grove will likely take 10 years if the deer and bugs will just leave it alone for a while. Building these improvements is really not difficult unless you try to do it yourself without power tools. I suggest that you build them now so you can borrow or rent tractors with PTO augers, bulldozers, backhoes, cement mixers as needed.
Academic Classes and the Extension Service
Many community colleges and land grant university extension services offer free information and classes to teach you to raise gardens, fruit, and livestock, and how to store your produce using a home canner. I took a great class titled “backyard food raising”. The skills needed to raise and store food are a lot like the skill to shoot a gun or reload ammunition. You can’t just read about it, you learn by doing.
Practice
Growing a garden is not like riding a bike. It is different for each area and the weeds and bugs are scheming right now to eat you out of house and home. I suggest that you start now and learn each new plant, animal, and pest while you can still buy food at the grocery store. While you can grow a lot the first year, my experience is that it will take 3 years practice before you are confident and fully successful
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Some Useful References:
Homesteading, Gene Logsdon, 1973 Rodale Press
Basic Country Skills, Storey, 1999, Storey Publishing
Emergency Preparedness and Survival-Section 3, Jackie Clay, 2003, Backwoods Home Magazine
Organic Orcharding, Gene Logsdon, 1981, Rodale Press
Introduction to Horticulture, Shry, Reiley, 2007, Thompson Delmar Learning
Backyard Fruits and Berries, Miranda Smith, 1994 Quarto Publishing
Animal Science, Ensminger, 1991, Interstate Publishers Inc.