Soil Amendments & Conditioners

While pest and disease control, fertilizing, and proper planting techniques are key parts to your landscape and garden success, the quality of your soil can greatly impact the health of your plants more than any other factor. Doing some garden soil preparation can save you a lot of time and bring you more healthy plants. 

25-48 of 86
5 out of 5 stars (2)
$19.31
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A granular soil amendment that corrects yellowing of plants and grasses to green fast.
2.5 out of 5 stars (2)
$21.36
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A unique formula that helps correct soil alkalinity and establishes an acid soil condition.
5 out of 5 stars (2)
$44.15
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Multiple sizes available
A all-natural potting soil that will assist plants pursuing nutrients from the ground with microbes and other organic matter.
5 out of 5 stars (1)
$80.50
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A high-porosity growing medium for water-sensitive crops.
5 out of 5 stars (2)
$45.12
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Multiple sizes available
A granular soil amendment that corrects yellowing of plants and grasses to green fast.
3 out of 5 stars (2)
$25.80
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Multiple sizes available
A mineral supplement that will quickly turn plants from yellow to green, and is great for use in lawns, trees, flowers, shrubs, and vegetables.
5 out of 5 stars (1)
$38.49
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Multiple sizes available
Soil Moist stores water for plants and releases water as needed. Saves up to 50% in watering!
4.5 out of 5 stars (18)
$17.76
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Multiple sizes available
A natural and organic plant source of humic acid to enrich the soil indoor plants to outdoor lawn and gardens.
$22.01
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A soil amendment that lowers the pH of the soil and have it become more acidic for Azaleas, Gardenias, Rhododendron and Hydrangeas.
4.5 out of 5 stars (2)
$53.88
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A coconut coir fiber potting mix made from coconut husks that resists compaction, absorbs evenly for aeration and drainage. Allows for less watering!
2 out of 5 stars (1)
$36.50
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An organic and pH-balanced soil media designed to promote optimal seed germination and enhance root development.
$27.37
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A plant supplement that turns plants from yellow to green and promotes a darker green color on lawns, ornamental trees and shrubs.
$89.04
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A professional soil amendment formula that may aid in the uptake of micro-nutrients for soil and foliar applications.
5 out of 5 stars (1)
$20.73
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An organic soil conditioner that promotes root growth and helps loosen clay soils for gardens, lawns and shrubs.
5 out of 5 stars (2)
$111.28
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Multiple sizes available
This acidifies the soil to lower the pH for a acid soil condition for Azaleas, Rhododendrons and Gardenias.
$19.74
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An organic potting mix made for cactus but may also be used for palm and citrus plants.
5 out of 5 stars (1)
$59.94
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A natural mineral substance which can be used as an agricultural fertilizer and soil amendment product.
$204.57
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A commercial moisture management tool designed to manage localized dry spot in soils.
5 out of 5 stars (1)
$25.49
Free Shipping!
Multiple sizes available
Soil Moist stores water for plants and releases water as needed. Saves up to 50% in watering!
$19.88
Free Shipping!
An organic blend of ingredients that promotes root growth and improve moisture retention of all seedlings and cuttings.
5 out of 5 stars (2)
$708.21
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Multiple sizes available
A water soluble chelated micro-nutrients fertilizer that is compatible with fertilizers and pesticides for vegetable crops to golf courses.
$17.62
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An all-natural and organic soil mix for orchids and other epiphytic plants.
4.5 out of 5 stars (18)
$26.45
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Multiple sizes available
A natural and organic plant source of humic acid to enrich the soil indoor plants to outdoor lawn and gardens.
$37.98
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Advanced microbial soil tablets for agriculture, horticulture, and hydroponics.

Soil Amendments

Soil amendments, also called soil conditioners, are materials added to your soil that aim to improve aspects of your soil, like water retention, permeability, drainage, aeration, and structure. Your soil should be able to support the roots of your plants while providing the optimal environment for growth. Soil amendments are thoroughly mixed into the soil, not laid on top like mulch. 

Types of Soil Amendments & Conditioners

The end results you’re looking for will determine which type of soil amendment you choose. Organic soil amendments include sphagnum peat, wood chips, grass clippings, straw, compost, manure, biosolids, sawdust, and wood ash. Inorganic soil amendments are manmade or mined, and include vermiculite, perlite, pea gravel, and sand. Organic products have the added benefit of containing nutrients and serve as a food source for beneficial fungi, bacteria, and earthworms, and are the best soil amendments for vegetable gardens. 

Using Soil Amendments 

Before choosing something to add to improve your soil, you should first assess your soil’s condition and research before adding anything to your soil. Soil testing can help you determine what you soil needs in order to better support plant growth. You can order soil tests, which will tell you the current pH, levels of nutrients (phosphorus, potassium, calcium, magnesium, zinc, manganese), and any fertilizer recommendations. These tests can make it clearer on the amendments you might need for your soil. 

 

Along with a soil test, you need to diagnose your soil as heavy (clay-based) or light (sand-based) because certain combinations of soils and amendments can make your soil worse. For example, difficult clay soils need to be porous, permeability, aeration, and drainage and you could use peat, wood chips, tree bark, or straw; adding sand to clay can make it even more compacted, similar to concrete. Sandy soils need to be able to hold water and nutrients and benefit from decomposed organic materials.

See also: Lawn & Garden Pest Control

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