"The Medicinal Herb Grower" volume 1 by Richo Cech 
This book covers principles and practices of natural gardening techniques for growing medicinal herbs organically. Using personal experiences and stories that are at once amusing and instructive, the author covers principles such as observation in nature, windows of opportunity, creating plant habitat, benefits of diversity, rules of green thumb, soil, seeds, water, sun, trees, humans, and the forest community. The second half of the book covers background (going all the way back to the Neolithic!), growth cycles of plants, preparing the ground, the greenhouse and the shadehouse, compost, potting soils (extensive!), planting seeds (also extensive!), making cuttings, and caring for plants. There are 2 addendums. Addendum 1 covers production, processing, and curing of medicinal herb seed. Addendum 2 covers harvest and processing of medicinal herbs. The book is detailed and informative yet engaging and entertaining.
176 pages, soft cover 

Making Plant Medicine is about making herbal medicine. This is a modern medicine making book and formulary with its roots in original herbalism designed for every medicinal herb gardener to cultivate the full potential of the plant-human relationship. Richo Cech tells very good stories based on his experience as a global wanderer, herbalist and medicine maker. In the context of his lifelong love of gardening, he has procduced this long-awaited book that is original, amusing and absolutely useful.

Part 1: Medicine Making
* drying and processing herbs
* making tinctures the easy way
* the mathematics of tincturing and solubility factors
* basic formulas for fresh and dry tinctures, including dosages
* vinegar extracts, glycerites, herbal succi and syrups teas, dectoxtions, herbal oils, salves and creams poultices, compresses and soaks

Part 2: A Gardener's Formulary
This section covers well over 100 herbs that are readily cultivated in North America. The listings include: conservation status, parts used, specific formulas, practical uses, dosages, contraindications and an overview of alternate species.

Since the beginning, the garden has been a haven of good values, both physical and spiritual. The act of gardening provides a balm for every wound. May your medicine be of the garden, and may it be of benefit to all.

Work of fiction, but gives an interesting point of view ~ from a fellow who "should have known better" and how his family and community survive for 1 year after total US grid collapse.

Warning: it's a slow start, as with any good book you'll find yourself enveloped in the story.. Its a tear jerker towards the end.
Warning 2: You'll want more ammo after this

Other Prep Books in my collection:

This book isn't for everyone...
It is a work of fiction geared towards a full fledged economy collapse and how a group of friends stockpile and combine resources..

Again ~ this book is NOT for everyone but for those of us who stockpile in case the world goes sideways, or those darn Zombies attack....

Patriots: A Novel of Survival in the Coming Collapse
James Wesley Rawles
How to Survive the End of the World as We Know It: Tactics, Techniques, and Technologies for Uncertain Times
James Wesley Rawles
Sold by:, LLC I think  It's AWESOME!

The Self-sufficient Life and How to Live It
John Seymour

When All Hell Breaks Loose: Stuff You Need To Survive When Disaster Strikes Cody Lundin, et al
Sold by:, LLC

SAS Survival Handbook, Revised Edition: For Any Climate, in Any Situation John 'lofty' Wiseman
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Just in Case Kathy Harrison
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The New Organic Grower: A Master's Manual of Tools and Techniques for the Home and Market Gardener (A gardener's supply book)

The Self-sufficient Life and How to Live It

Microgreens: A Guide To Growing Nutrient-Packed Greens Eric Franks, Jasmine Richardson

The Sprouting Book: How to Grow and Use Sprouts to Maximize Your Health and Vitality (Avery Health Guides) Ann Wigmore

Encyclopedia of Herbal Medicine: The Definitive Home Reference Guide to 550 Key Herbs with all their Uses as Remedies for Common Ailments Andrew Chevallier

The Herbal Medicine-Maker's Handbook: A Home Manual

Grafting Fruit Trees: Storey Country Wisdom Bulletin A-35

Uncommon Fruits for Every Garden Lee Reich, Vicki Herzfeld Arlein

Gaia's Garden, Second Edition: A Guide To Home-Scale Permaculture

The Green Pharmacy Herbal Handbook: Your Everyday Reference to the Best Herbs for Healing

Micro Eco-Farming: Prospering from Backyard to Small Acreage in Partnership with the Earth

Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long
The Winter Harvest Handbook: Year Round Vegetable Production Using Deep Organic Techniques and Unheated Greenhouses
Eliot Coleman

Build Your Own underground Root Cellar Phyllis Hobson

You Can Farm: The Entrepreneur's Guide to Start & Succeed in a Farming Enterprise

Making Your Small Farm Profitable: Apply 25 Guiding Principles/Develop New Crops & New Markets/Maximize Net Profits Per Acre Ron Macher, Howard W. Kerr

Successful Small-Scale Farming: An Organic Approach (Down-To-Earth Book)

Five Acres and Independence: A Handbook for Small Farm Management

Possum Living: How to Live Well Without a Job and with (Almost) No Money
Dolly Freed, David Gates
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This is... interesting

Good might be going too far, but it is interesting.