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Fertilizers

Fertilizer: At the heart of all organic growing

At the heart of all organic growing is the art and science of fertilizing organically. Healthy soil nurtures healthy plants which generally grow better, taste better, store longer and consequently, should have increased resistance to the stresses caused by heat, cold, drought, pests, diseases, rapid growth, etc. Fertile soil is not only the first step for increasing yields and quality but also for natural pest control and season extending.

How To Get Started

The best way to evaluate your own situation is to start with a soil test. We offer a Soil Analysis Report, appropriate for both commercial and homescale growers. It includes all the lab readings you'll need to begin building your soil organically. Your field or garden is a dynamic ecosystem. The relationship between plants and living soil changes seasonally, monthly and daily. For this reason, most successful organic commercial growers regularly monitor their soil using lab tests and field monitoring tools (eg. nitrate test strips, field meters, etc., see Monitoring Tools). It is also important for homescale growers to get occasional lab tests, which can be supplemented with soil tests. See more on soil testing.

Long–Term Soil Building

A successful fertilizing program addresses the soil's long-term needs by adjusting deficient nutrients with organic fertilizers and soil amendments. We offer the largest selection of organic fertilizers in the U.S. Use your soil test and/or the general guidelines given ahead to determine which fertilizers will be of most value to you. An equally important aspect of soil building is adding a "green manure" cover crop to your crop rotation in order to build organic matter, nitrogen and biological life in your soil. See more on composting and cover crops.

Which Fertilizer?

Organic Fertilizer Solution Chart

Find the solution for your soil in our Fertilizer Solution Chart. You will be able to quickly identify products appropriate for your circumstances. Virtually every soil will benefit from regular additions of organic matter and humus. We feel that compost (in combination with a good cover crop program) is the best material to handle this important task. By compost we mean a material completely broken down aerobically and based upon animal manures and plant residues rather than woodchips. Raw manures are not a substitute for compost. Raw manure breaks down in the soil, tying up water, nitrogen, and other vital resources in the process. It often introduces weed seeds and pathogens, loses nutrients as it breaks down, and must be applied at 4 to 5 times the rate of compost. Raw manures definitely should not be used right before harvesting a crop.

Organic Gardening Resource Center - Your Source Since 1976!
Organic Gardening

Read our Blog Customers and Peaceful Valley staff share their fertilizing knowledge at groworganic.com/organic-gardening

Fertilizer 101:

  • Nitrogen is what plants need for vigorous vegetative growth. If your crop needs additional Nitrogen see Bloodmeal, Cottonseed Meal, PVFS Liquid Fish, Fish Meal, Pelleted Fertilizers, Feather Meal, and others.
  • Phosphorus is what plants need to flower, fruit, and for root development. To supply Phosphorus, Soft Rock Phosphate is the best value. Bone Meal can also be used.
  • Potassium is what plants need, among other things, to establish vigor and resistance through sugar formation. To supply Potassium use Sulfate of Potash or Greensand.
  • Calcium builds sturdy cell walls in plants. Many soils need Calcium fertilization. In low pH soils, use Oystershell Lime or Mined Limestone which corrects not only calcium imbalances but also pH. In neutral or high pH soils, Gypsum is the material of choice, it also provides sulfur. Calcium builds sturdy cell walls in plants.
  • Trace minerals are as essential to plants as vitamins are to people. Almost every field we test is low in Trace Minerals. We get excellent response from soil applications of Compost, Algit Kelp Meal or multiple trace minerals (Azomite or Nutra Min). In extreme cases specific trace mineral supplements may be needed.
PVFS Compost Tea Brewer
PVFS Compost Tea Brewer

E140

$74.99
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Azomite - Micronized (2 lb)
Azomite - Micronized (2 lb)

F039

$4.99 As low as: $3.99
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Humic Acids, Granular (5 Lb Box)

F024

$7.49 As low as: $6.74
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Cottonseed Meal (6 Lb Box)
Cottonseed Meal (6 Lb Box)

F023

$9.99 As low as: $8.99
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Vegan Mix 3-2-2 (6 Lb Box)
Vegan Mix 3-2-2 (6 Lb Box)

F009

$8.99 As low as: $8.09
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Acid Mix 4-3-6 (6 Lb Box)
Acid Mix 4-3-6 (6 Lb Box)

F008

3 Reviews

$8.99 As low as: $8.09
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Corn Weed Blocker 9-1-0 (5 Lb Box)
Corn Weed Blocker 9-1-0 (5 Lb Box)

F007

$10.99 As low as: $9.89
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Neem Seed Meal  (5 Lb Box)
Neem Seed Meal (5 Lb Box)

F005

$14.99 As low as: $13.49
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Fish Bone Meal 3-16-0 (6 Lb)
Fish Bone Meal 3-16-0 (6 Lb)

F020

1 Review

$8.99 As low as: $8.09
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Gaia Green Glacial Rock Dust (50 lb)

F045

(3)

$29.99 As low as: $23.99
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Reotemp Compost Thermometer, 20"
Reotemp Compost Thermometer, 20"

TM605

(1)

$29.99
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Vegan Mix (25 lb Bag)

F062

$26.99 As low as: $21.59
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Sup'R Green Chicken Manure (Composted) (25 lb)
Sup'R Green Chicken Manure (Composted) (25 lb)

F444

5 Reviews

$5.99 As low as: $4.79
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Nutra Min - Sierra Mountain Minerals (30 Lb Bag)
Nutra Min - Sierra Mountain Minerals (30 Lb Bag)

F1796

$59.99 As low as: $47.99
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Fish Bone Meal 3-16-0 (50 Lb)
Fish Bone Meal 3-16-0 (50 Lb)

F312

$44.99 As low as: $35.99
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Calphos Soft Rock Phosphate - Regular Powder (50 lb)
Calphos Soft Rock Phosphate - Regular Powder (50 lb)

F2101

(2)

$18.99 As low as: $14.24
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Activate 80 Micronized Humate (30 Lb)
Activate 80 Micronized Humate (30 Lb)

F531

$89.99 As low as: $71.99
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Vegetable & All Purpose Mix 4-6-2 (25 lb Bag)
Vegetable & All Purpose Mix 4-6-2 (25 lb Bag)

F065

$28.99 As low as: $23.19
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Fish Meal (25 Lb)
Fish Meal (25 Lb)

F1050

$44.99
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Acid Mix (25 lb Bag)

F063

(1)

$26.99 As low as: $21.59
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Organic BioLink Micronutrients (Gallon)
Organic BioLink Micronutrients (Gallon)

F1869

$24.99 As low as: $22.49
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Cottonseed Meal (50 Lb)

F790

$44.99 As low as: $35.99
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Activate 80 Coarse Grade Humate (50 Lb)
Activate 80 Coarse Grade Humate (50 Lb)

F535

$24.99 As low as: $19.99
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Earth Juice Grow 2-1-1 (Quart)
Earth Juice Grow 2-1-1 (Quart)

F3000

(2)

$14.99
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Pelleted Bone Meal 4-14-0 (50 Lb)

F360

$74.99 As low as: $59.99
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Big Red Blood Meal - Pelleted - 13-0-0 (50 Lb)
Big Red Blood Meal - Pelleted - 13-0-0 (50 Lb)

F103

$119.00 As low as: $95.20
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Crab Shell Meal 4-3-0 (40 Lb)
Crab Shell Meal 4-3-0 (40 Lb)

F1963

$36.99 As low as: $29.59
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Feather Meal (6 Lb Box)
Feather Meal (6 Lb Box)

F026

$11.99 As low as: $10.79
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Worm Castings (1 Gal)
Worm Castings (1 Gal)

F903

2 Reviews

$6.99
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Bat Guano Hi N 9-3-1 Powder (25 Lb Bag)
Bat Guano Hi N 9-3-1 Powder (25 Lb Bag)

F029

$55.99 As low as: $44.79
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Pre-Plant Plus 7-5-7 (50 Lb)
Pre-Plant Plus 7-5-7 (50 Lb)

F324

$39.99 As low as: $31.99
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Aqua Power (5 Gallon)
Aqua Power (5 Gallon)

F995

$59.99
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Tiger 90 Soil Sulfur (50 Lbs)
Tiger 90 Soil Sulfur (50 Lbs)

F2210

$27.99 As low as: $22.39
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Cottonseed Meal (25 Lb)
Cottonseed Meal (25 Lb)

F792

$27.99
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Kelp Meal (5 Lb Box)
Kelp Meal (5 Lb Box)

F017

$14.99 As low as: $13.49
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Worm Castings (1 Cu Ft)
Worm Castings (1 Cu Ft)

F902

1 Review

$19.99 As low as: $15.99
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Dolomite (50 Lb)
Dolomite (50 Lb)

F850

$9.99 As low as: $7.99
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Fertibor Boron (50 Lb)
Fertibor Boron (50 Lb)

F210

$54.99 As low as: $43.99
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Oyster Shell Lime (50 Lb)
Oyster Shell Lime (50 Lb)

F1850

(2)

$9.99 As low as: $7.99
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Monterey Manganese Sulfate 31% Powder (50 Lb)
Monterey Manganese Sulfate 31% Powder (50 Lb)

F1676

$49.99 As low as: $39.99
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Greensand (50 Lb)

F1120

$34.99 As low as: $27.99
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Bone Meal Steamed 3-15-0 (6 Lb Box)
Bone Meal Steamed 3-15-0 (6 Lb Box)

F014

2 Reviews

$10.99 As low as: $9.89
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Microp (8 Oz)

ISO310

$17.99 As low as: $16.19
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Foothill Fertilizer Mix 0.5-4.0-4.0 (50 Lb)
Foothill Fertilizer Mix 0.5-4.0-4.0 (50 Lb)

F1100

$36.99 As low as: $29.59
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Oyster Shell Lime (6 Lb Box)

F018

$7.49 As low as: $6.74
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Blood Meal (5 Lb Box)
Blood Meal (5 Lb Box)

F013

$18.99 As low as: $17.09
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Vegetable & All Purpose Mix 4-6-2 (6 Lb Box)
Vegetable & All Purpose Mix 4-6-2 (6 Lb Box)

F010

$9.99 As low as: $8.99
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Blood Meal (50 Lb)
Blood Meal (50 Lb)

F101

(1)

$99.99 As low as: $79.99
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Diamond K Solution Grade Gypsum (50 Lb)

F1153

$8.99 As low as: $7.19
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Organic Soybean Meal 7-2-1 (5 Lb Box)
Organic Soybean Meal 7-2-1 (5 Lb Box)

F019

$11.99 As low as: $10.79
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Zinc Sulfate Powder 50 Lb
Zinc Sulfate Powder 50 Lb

F2565

$49.99 As low as: $39.99
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PVFS Organic Liquid Fish 2-4-0.2 (5 Gallon)
PVFS Organic Liquid Fish 2-4-0.2 (5 Gallon)

F1336

$59.99 As low as: $47.99
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PVFS Organic Liquid Fish 2-4-0.2 (Gallon)
PVFS Organic Liquid Fish 2-4-0.2 (Gallon)

F1335

2 Reviews

$14.99 As low as: $11.99
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PVFS Organic Liquid Kelp (5 Gallon)
PVFS Organic Liquid Kelp (5 Gallon)

F1332

$99.99 As low as: $79.99
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PVFS Organic Liquid Kelp (Gallon)
PVFS Organic Liquid Kelp (Gallon)

F1331

(4)

$19.99 As low as: $15.99
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PVFS Organic Liquid Kelp (Quart)
PVFS Organic Liquid Kelp (Quart)

F1330

2 Reviews

$9.99 As low as: $7.99
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Seabird Guano 12-12-2.5 (55 Lb)

F1924

1 Review

$49.99 As low as: $39.99
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Sulfate of Potash (50 Lb)
Sulfate of Potash (50 Lb)

F2260

$39.99 As low as: $31.99
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Bat Guano Hi N 9-3-1 (2 Lb Box)
Bat Guano Hi N 9-3-1 (2 Lb Box)

F012

$7.99 As low as: $7.19
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Greensand (6 Lb Box)

F016

$9.99 As low as: $8.99
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Rose, Flower & Bulb Mix 4-8-4 (6 Lb Box)
Rose, Flower & Bulb Mix 4-8-4 (6 Lb Box)

F015

2 Reviews

$9.99 As low as: $8.99
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Micro Hume
Micro Hume (2 Lb Jar)

F520

1 Review

$9.99 As low as: $7.99
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Biodynamic Field Spray (2 Oz Pkt)
Biodynamic Field Spray (2 Oz Pkt)

ISO200

$29.99 As low as: $26.99
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Bone Meal Steamed 3-15-0 (50 Lb)
Bone Meal Steamed 3-15-0 (50 Lb)

F155

$58.99 As low as: $47.19
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K-Mag Natural Crystals - KMS Diamond K Brand (50 Lb)
K-Mag Natural Crystals - KMS Diamond K Brand (50 Lb)

F2360

$39.99 As low as: $31.99
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Organic Soybean Meal 7-2-1 (40 Lb Bag)
Organic Soybean Meal 7-2-1 (40 Lb Bag)

F1930

$57.99 As low as: $29.00
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Therm X70 Yucca Extract (Quart)
Therm X70 Yucca Extract (Quart)

PSA000

1 Review

$29.99
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Feather Meal (50 Lb)

F940

$49.99 As low as: $39.99
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Sulfate of Potash Ultrafines - Diamond K Soluble (50 Lb)
Sulfate of Potash Ultrafines - Diamond K Soluble (50 Lb)

F2300

1 Review

$44.99 As low as: $35.99
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Shrimp Shell Meal (50 Lb)

F1960

$49.99 As low as: $39.99
Out of stock Add to Wishlist
Seabird Guano Hi N 12-12-2 (5 Lb Box)
Seabird Guano Hi N 12-12-2 (5 Lb Box)

F1932

$14.99 As low as: $13.49
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Maxicrop Kelp Extract (Lb)
Maxicrop Kelp Extract (Lb)

F1360

7 Reviews

$19.99
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Bio-Fish All Purpose 7-7-2 (5 Lb Box)
Bio-Fish All Purpose 7-7-2 (5 Lb Box)

F025

$9.99 As low as: $8.99
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Nu-Film-17 (Gallon)
Nu-Film-17 (Gallon)

PSA700

(1)

$59.99
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Nu-Film P (Gallon)

PSA710

$49.99
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Fish Meal (50 Lb)
Fish Meal (50 Lb)

F1055

$69.99 As low as: $55.99
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Rose, Flower, & Bulb Mix 4-8-4 (25 lb Bag)

F064

$29.99 As low as: $23.99
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Peaceful Valley Compost (54 Cubic Ft Tote)
Peaceful Valley Compost (54 Cubic Ft Tote)

F621

$149.00 As low as: $119.20
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Sunshine Peat Moss 2.2 Cu Ft
Sunshine Peat Moss 2.2 Cu Ft

PSO101

2 Reviews

$20.99 As low as: $16.79
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MycoMinerals Soil Amendment 4 lb Jar
MycoMinerals Soil Amendment 4 lb Jar

ISA200

$39.99 As low as: $35.99
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Aqua Power 55 gal
Aqua Power 55 gal

F996

$398.00
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VermiBlend (1 Cu Ft)
VermiBlend (1 Cu Ft)

F910

(2)

$14.99 As low as: $11.99
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Peaceful Valley Compost (1 Cubic Ft)
Peaceful Valley Compost (1 Cubic Ft)

F620

(10)

$4.99 As low as: $3.74
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Nutri-Rich 4-3-2 Pellets (50 lb)
Nutri-Rich 4-3-2 Pellets (50 lb)

F442

2 Reviews

$13.99 As low as: $11.19
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Organic PrimeStart Booster Blend
Organic PrimeStart Booster Blend 3.2-4.5-3.5 (3 Lb Bag)

F2000

6 Reviews

$3.99 As low as: $2.49
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Azomite Micronized (44 lb)
Azomite Micronized (44 lb)

F040

1 Review

$24.99 As low as: $19.99
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Tomato & Vegetable Food 4-5-3 (4 lb box)
Tomato & Vegetable Food 4-5-3 (4 lb box)

F305

2 Reviews

$7.99 As low as: $7.19
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Ultra Bloom 0-10-10 (15 lb bag)
Ultra Bloom 0-10-10 (15 lb bag)

F301

$19.99 As low as: $17.99
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Ultra Bloom 0-10-10 (4 lb box)
Ultra Bloom 0-10-10 (4 lb box)

F300

(2)

$7.99 As low as: $7.19
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Roots Organics Formula 707 3cu ft
Roots Organics Formula 707 3cu ft

PSO605

1 Review

$24.99 As low as: $19.99
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