Compost 60
Fertilizers 12
Mulch 14
| | Soils - Agriculture, Science 328
Fertilizers and Soil Additives - Home and Garden, Shopping 87
 Improve Your Garden SoilImprove Your Garden Soil
 
Covers a wide range of garden soil topics, including soil types, pH, nutrients, testing, composting and fertilizers.
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Do It Yourself.com: Fertilizer, Compost, and SoilDo It Yourself.com: Fertilizer, Compost, and Soil
 Series of projects, articles, and tips on fertilizing, composting, and nutrient management.
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Gardening Information: SoilGardening Information: Soil
 Collection of articles from Oregon State University on various aspects of soil: use of amendments and cover crops, temperature, acidity, moisture, and testing.
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Improving SoilImproving Soil
 Oregon horticulturalist offers information on soil components, pH, testing methods, and nutrients, and means of improving it by using amendments and improving drainage and aeration.
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The Schundler CompanyThe Schundler Company
 Collection of articles and resources about the horticultural uses of perlite and vermiculite.
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Soil Testing is an Excellent Investment for Garden Plants and Commercial Crops, HYG-1132-99Soil Testing is an Excellent Investment for Garden Plants and Commercial Crops, HYG-1132-99
 Ohio State University fact sheet covers the benefits of testing garden soil and provides recommendations for testing frequency, collecting a sample, and submitting to a testing lab.
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Vermiculite.comVermiculite.com
 One-page site giving suggestions on where to purchase vermiculite in the United States, along with some uses and properties of vermiculite.
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