Top 10 Best silica for plants in 2026

Last Updated - 6/6/2026

🏆Best Choice

Simple Lawn Solutions

Advanced 16-4-8 Balanced NPK - Lawn Food Quality Liquid Fertilizer - Spring & Summer Concentrated Spray - Any Grass Type - Simple Lawn Solutions (32 Ounce)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Complete NPK Lawn Food: 16-4-8 is the perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish.
•Contains High Quality Feed Grade Ingredients: Nourish your lawn with pure liquid Nutrients in a ready to use sprayer
•Easy To Use: Designed to be easily applied. This complete Nitrogen, Phosphate and Potash formula gives your grass greening & growth while providing nutrients for lush lawns
•All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
•Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family owned business with 25 years of former experience in the commercial professional turf industry.
•Blended with 16% Nitrogen. Nitrogen is a major component of chlorophyll where plants get their green coloring. Nitrogen encourages vigorous growth for the development of a dense attractive lawn.
•Blended with 4% Phosphorus. Phosphorus encourages root development, and enhances vigorous plant development in early stages.
•Blended with 8% Potassium. Potassium enhances plant tolerance to extreme temperatures and drought, while also playing an essential role in the transfer of nutrients and regulation of water and nutrients.
•Contains Seaweed and Fish. Seaweed & Fish Emulsion provides rich, organic matter to soil for a more effective Lawn Food and optimum nutrient uptake.
•16-4-8 Lawn Food is best to be used to maintain and feed your lawn, if you want to enhance the green of your lawn, if you are trying to boost vertical and lateral growth, and/or if your lawn is deficient in Macronutrients like Nitrogen, Phosphorus and Potassium.

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$23.77

$29.99

-21%

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Simple Lawn Solutions

Ultimate 3-18-18 NPK- Lawn Food Quality Liquid Fertilizer- Easy to Use Concentrated Spray- Any Grass Type- Summer & Fall Nutrients- Simple Lawn Solutions - Turf Hardiness & Root Vigor (32 Ounce)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•High Phosphorus, High Potassium Lawn Food: If your lawn is showing symptoms of a Phosphorus and Potassium deficiency or if you want to maintain lawn health then this is the correct fertilizer for you!
•Made With High Quality Feed Grade Ingredients: Nourish your lawn to its top potential with quality liquid lawn Nutrients.
•Easy To Use: Designed to be easily applied. This high Phosphorus & Potassium Lawn Food gives your lawn the nutrients it needs for strong root development, vigor, and strength.
•Can Be Used on All Grass Types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Palmetto & Bluegrass Lawns.
•Easy to Use: Our 3-18-18 Lawn Fertilizer Food comes with a ready-to-use hose end sprayer that applies the perfect ratio of product for lawn applications. Covers up to 3,200 square feet, when using the attached sprayer.
•Great Starter Fertilizer: High Phosphorus and Potassium Lawn Food provides essential Phosphorus to promote plant development, and is highly recommended when establishing a lawn.
•Contains 3% Nitrogen. Low Nitrogen Formula. Nitrogen can encourage growth for the development of a dense, attractive lawn.
•Contains 18% Phosphorus. Phosphorus encourages root development, and is essential for turf establishment. Phosphorus effects on turf are usually more subtle and, while not as readily visible, are still very important.
•Contains 18% Potassium. Potassium can enhance the plant’s endurance to stress if a deficiency is present. The application of Potassium will generally not show a visible response.
•Produced In The USA: 3-18-18 is Manufactured in the United States of America, by a Family Owned Business with over 25 Years of Former Experience in the Commercial Professional Turf and Agriculture Industry.

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$25.79

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Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 Pound Bag - for Lawns, Flowers, and Gardens

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•You don’t have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
•Milorganite contains virtually no salts, so it won’t burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
•Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and won’t stain concrete, unlike iron salts in some synthetic fertilizers.
•Milorganite’s slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
•Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

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$18.98

$32.99

-42%

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Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 Pound Bag - for Lawns, Flowers, and Gardens

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•You don’t have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
•Milorganite contains virtually no salts, so it won’t burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
•Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and won’t stain concrete, unlike iron salts in some synthetic fertilizers.
•Milorganite’s slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
•Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

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$30.56

$39.99

-24%

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Simple Lawn Solutions

Advanced 16-4-8 Lawn Fertilizer - Liquid Lawn Food Spring & Summer Concentrated Spray - Any Grass Type- Fish and Seaweed Kelp- Balanced NPK - Simple Lawn Solutions (1 Quart)

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•16-4-8 Liquid Lawn Food Fertilizer: The perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish
•This complete Nitrogen, Phosphate, and Potash formula gives your grass greening & growth while providing nutrients for lush lawns. Apply 16-4-8 Liquid Fertilizer using a hose end sprayer, backpack sprayer, pump up sprayer or watering can
•Blended with 16% Nitrogen. Nitrogen is a major component of chlorophyll, where lawns get their green coloring. Nitrogen encourages growth for the development of a dense attractive lawn
•Blended with 4% Phosphorus. Phosphorus encourages root development and enhances lawn establishment in early stages
•Blended with 8% Potassium. Potassium can enhance a lawn’s endurance to temperatures and drought if a deficiency is present
•Contains Seaweed and Fish. Seaweed & Fish Emulsion provides rich nutrients to soil for a more effective Lawn Food and optimum nutrient uptake
•Application Rates for Lawn, Garden and Indoor Plants: Versatile Formula can be used on turf grass, ornamentals, young plants, flower beds, potting soil, young trees, garden and hardy plants
•All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
•Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family-owned business with over 25 years of former experience in the commercial professional turf industry
•Use Alongside Fertilizer Program. 16-4-8 Liquid Fertilizer can be used with your current fertilizer program. Great as a supplement to granular fertilizer programs for a quick plant uptake

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$22.99

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Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 5 Pound Bag - for Lawns, Flowers and Gardens

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•You don’t have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
•Milorganite contains virtually no salts, so it won’t burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
•Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and won’t stain concrete, unlike iron salts in some synthetic fertilizers.
•Milorganite’s slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 390 Sq. Ft.
•Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

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$14.50

$19.92

-27%

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Simple Lawn Solutions

Organic Micronutrient Booster- Complete Plant & Turf Nutrients- Simple Grow Solutions- Garden & Lawn Fertilizer- Grower, Gardener- Liquid Food for Grass, Tomatoes, Flowers, Vegetables (32 Ounce)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Micro Booster is a Concentrated Liquid Micronutrient Blend Designed to Enhance Color and Improve the Overall Vigor of your Turf, Garden or Plants.
•Feed your Lawn, Garden, and Indoor Plants With with a Blend of the Essential Complexed Micronutrients: Iron, Manganese, and Zinc, along with the secondary macronutrients Magnesium and Sulfur.
•Micro Booster can be used on any Grass Type Including St. Augustinegrass, Bahiagrass, Bermudagrass, Centipedegrass, Kentucky Bluegrass, Annual Ryegrass, Perennial Ryegrass, Tall/Fine Fescues, Zoysiagrass, and more.
•Application Rates For Lawn & Garden: Use on Turfgrass, Flowers, Hardy trees, Young plants, Tomatoes, Vegetables, Fruit, Citrus, Flower beds, Bushes, Potting soil and More.
•Perk Up Lawn & Garden: Immediately Available Nutrients Formulated to be Rapidly Absorbed By the Plant to Correct & Prevent Deficiencies.
•Micro Booster 32 ounce covers 3,200 square feet when using a Hose-end Sprayer: Use with a Third Party Sprayer, Backpack Sprayer, Spray Tank or Pump-up Sprayer.
•Produced In The United States: Micro Booster is manufactured in the United States of America, by a family-owned business with 30 years of former experience in the agricultural field!

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$24.97

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Medina

Medina Liquid Soil Activator - Liquid Fertilizer for Indoor & Outdoor Plants - Promotes Root Growth, Balances Soil Compaction - Ideal Plant Food for Houseplants - Covers up to 4000 Sq. Ft. - 1 Gal

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•SOIL REVITALIZATION AND STRENGTH: Medina Soil Activator, referred to as "Yogurt for the Soil" by gardening experts, invigorates your soil by stimulating beneficial organisms. This liquid fertilizer for indoor plants enhances root systems, making it ideal for rejuvenating tired lawns and gardens.
•OPTIMIZES SOIL HEALTH: Our soil activator not only loosens and balances your soil but also converts nutrients into usable plant food for houseplants. It effectively balances soil micro-flora, pH, and structure, ensuring an optimal environment for plant growth.
•MINIMIZES SALT BUILD-UP: With its unique formulation, Medina Soil Activator reduces salt accumulations in the soil. This liquid plant food creates a more natural and healthy soil environment, allowing your plants to thrive in both indoor and outdoor settings.
•HIGHLY VERSATILE: Designed to work seamlessly with most fertilizers, this soil activator integrates effortlessly into your garden care routine. It is ideal for use as a liquid fertilizer for indoor and houseplants.
•PACKED WITH NUTRIENTS: Fortified with over 40 trace elements, including natural growth hormones from seaweed extract, magnesium, iron, zinc, and essential vitamins, Medina Soil Activator ensures your soil is properly activated and your plants receive the nutrients they need.

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$21.98

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Medina

Medina Plus Soil Activator - Liquid Soil Loosener for Lawns & Gardens - Micronutrient-Rich Soil Conditioner & Softener - Used with House Plant Fertilizer, Liquid Plant Food for Houseplants - 1 End Qt

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•ENHANCED SOIL ACTIVATOR FORMULA: Medina Plus Soil Activator now includes seaweed extract and vital micronutrients. With over 40 trace elements, it’s a premium foliar feed and soil conditioner for plants, trees, shrubs, lawns, and as a compost activator.
•PROMOTES BLOOMING & LEAF GROWTH: Medina Plus Soil Activator revitalizes soil, enhancing blooming and leaf growth. Ideal with house plant fertilizer or liquid plant food for houseplants, it ensures unmatched health and vitality for your plants.
•EASY TRANSPLANTING & ROOT SUPPORT: Reduce transplant shock and enhance root growth with Medina Plus Soil Activator. Dilute 1 ounce per gallon of water as a root stimulator for plants, ensuring strong establishment and reduced stress.
•IDEAL FOR LARGE AREAS & LAWNS: Apply Medina Plus Soil Activator with a hose-end sprayer set to 6 tablespoons per gallon. This soil conditioner covers 1,000 square feet per quart, nourishing deeply without the need for additional watering.
•GARDENS & POTS APPLICATION: Mix 6 tablespoons of Medina Plus in a gallon of water for small areas and flower pots. This liquid fertilizer for indoor plants and soil activator boosts growth when combined with your favorite plant food.

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$9.53

$17.99

-47%

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1ST CHOICE FERTILIZER

Earth-Care Plus 5-6-6 Organic Fast Acting Fertilizer for Plants - Water-Soluble Plant Food for Vegetables, Trees, and Flowers - Boost Growth for Lawns, & Gardens 4lb (1Pack)

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Versatile Organic Fertilizer: Our all-purpose organic fertilizer is perfect for a wide variety of plants, including vegetables like tomatoes, flowers, trees, and house plants. Suitable for gardens.
•Boosts Growth and Resilience with Robust Root Development: Our fertilizer promotes healthy root development and vigorous growth, especially in vegetable gardens and potted plants. This improved root mass enables plants to access nutrients and water more efficiently, improving performance, including increased growth and flowering.
•Water-Soluble Formula with Quick-Release Nitrogen: Easily mix our plant food with water for plants and gardening. The quick-release nitrogen rapidly feeds plants, stimulating vigorous growth and enhancing the overall health and appearance of your garden.
•Effective Weed Control and Soil Enhancement: By strengthening your plants, this fertilizer helps naturally suppress weeds and enhance potting soil for plants, contributing to a more manageable garden.
•Slow-Release Formula for Extended Effectiveness: The slow-release formula gradually disperses nutrients over time, extending its effectiveness up to 6 weeks. This prolonged nutrient release sustains plant health, minimizes maintenance efforts, and promotes convenience and efficiency, perfect for tree watering bags.

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$7.89

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