Comfrey
Book: Volume 2
Cultivation of Comfrey
Medicinal and Food Uses for People and Livestock
448 pages, 8.5" x 11", Paperback
Published 2022
Table of Contents, Part F (long version)
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PART F: CULTIVATION AND PRODUCTIVITY OF COMFREY
Chapter 34: Care of Comfrey Plant: Overview and How to Propagate...page 353
General Cultivation of Prickly Comfrey
Collecting Pods and Seeds
Drying Comfrey Pods and Seeds
Number Dry Seeds Per Gram
Storing Seeds
Propagation by Seeds
Starting Seeds Indoors or in Greenhouse / Cold Frame
Direct Sowing Seeds in Fall
Direct Sowing Seeds in Spring
Cold, Moist Stratification
Propagation by Stem Cuttings
Propagation by Root Cuttings
Overview
Rapid Increase Area of Land Planted
Plant Hormones and Comfrey Root Cuttings
Methods of Digging Root Cuttings
Definitions and Overview
Garden Method of Digging Roots
Farm Method of Digging Roots
Size of Root Cuttings (Offsets)
Care and Storing of Root Cuttings
Chapter 35: Planting, Soil, Fertilization, Water, Disease...page 374
Location of Planting
Timing of Digging and Planting
Best Time to Dig Up Comfrey Roots
Best to Plant in Spring or Early Fall
Latest Planting is Early Fall
Dig Roots Starting Third Year
Temperature
Frost Resistance of Leaves
Cold Hardiness of Entire Plant
Heat Sensitivity of Comfrey
Photoperiod (Day Length)
Soil Type and Soil Depth for Root Growth
Soil Depth Needed by Comfrey
How to Plant Comfrey Roots
Overview
Spacing Between Roots, and Number Per Acre
Depth of Planting Roots; Vertical/Horizontal
Fertilization of Comfrey Plant
Manure
Fishmeal or Dried Blood Fertilizers
Urine as Fertilizer
Lime Fertilization
Chemical Fertilizers
Mineral Fertilization
Rock Powders and Seaweed
Timing of Fertilization
Water
How Much Water Needed (Right Amount vs Too Much)
Very Drought Tolerant
Weeds
Mechanical and Chemical Control of Weeds
Fertilization Helps Comfrey Outgrow Weeds
Pests and Disease
Rust (Fungus)
Other Fungus Disease
Pyrethrum Eelworm (Nematode)
Bacterial Disease
Insect Damage
Virus Disease
Unwanted Deer, Rabbits & Groundhogs Eat Comfrey
Gopher Problems
Chapter 36: Productivity and Farm Economics of Comfrey...page 410
Rate of Growth
First, Second, Third and Fourth Years
Production Per Plant or Small Area (Yield)
Pounds Fresh Comfrey Leaves Per Plant or Small Area
Pounds Dried Comfrey Leaves & Roots Per Part of Acre
Production Per Acre (Yield)
Tons or Pounds of Fresh Comfrey Leaves Per Acre
Tons or Pounds of Dried Comfrey Leaves Per Acre
Tons or Pounds of Fresh Comfrey Roots Per Acre
Tons or Pounds of Dried Comfrey Roots Per Acre
Comparing Comfrey to Other Crops
Comfrey versus Alfalfa: Yield and Land Use
Comfrey versus Amaranth
Comfrey versus Timothy Yield
Comfrey and Farm Economics
International Comfrey Production and Marketing
Usefulness Varies with Number of Tons Per Acre
Usefulness Varies with Type of Environment
Best Farm Comfrey is Solid Stem & Magenta Flowers
Intercropping (Growing Comfrey with Other Crops)
Pasture and Comfrey
Age of Comfrey Plot and Yield
Older Comfrey Plots and How to Restore Them
Chapter 37: Harvesting Comfrey Leaves...page 430
(For Drying Comfrey leaves, see ‘Comfrey as Hay’, Chapter 21)
Overview of Harvesting Leaves
Tools Used for Harvesting Comfrey Leaves
Timing and Frequency of Harvests
Timing According to First Cut of Season
Timing According to Height
Timing According to Month
First Cut for Comfrey Planted that Spring
First Cut for Established Comfrey Plants
Cutting in June or July
Last Cut in September or October
Cutting Prebloom versus Full Bloom
Number of Cuts Per Year (or Days Between Cuts)
Chapter 38: How to Get Rid of Unwanted Comfrey...page 436
Invasiveness of Comfrey
S. Asperum, S. Officinale, S. Tuberosum
Symphytum x Uplandicum Invasiveness
Plow Field in Winter, Then Grow Grass
Let Pigs Dig Up and Eat Comfrey Roots
Let Chickens or Other Poultry Kill the Comfrey
Kill by Sheet Mulching or Covering with Plastic
Dig, Dig, Dig
Use Salt to Kill Comfrey Roots
Rot Roots with Too Much Water
Use Herbicides to Get Rid of Comfrey
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