Contents
- The Top 8
- Top 8 Fertilizers Reviewed in Detail
- 1. Editor’s Choice
- 2. Runner-Up
- 3. Best for Beginners
- 4. Best Design
- 5. Best for Daily Use
- 6. Best Lightweight
- 7. Best Value
- 8. Best for Small Spaces
- Fertilizers Compared Side by Side
- How to Choose Fertilizers
- How We Reviewed
- Frequently asked questions
- What to look for
The cheapest fertilizer options can be tricky to choose. For our top pick, we recommend Scotts Turf Builder WinterGuard Fall Lawn Food in 10 lbs. This fertilizer strengthens grass roots for a better lawn come spring. The value choice is Miracle-Gro Water Soluble All Purpose Plant Food in 1.5 lb. You save money, but it works for a wider range of plants, not just lawns.
Most buyers decide between a lawn-focused fertilizer or one that supports all types of plants. Lawn lovers will lean towards Scotts, while those with varied plants might prefer Miracle-Gro. The rest of this page guides you through more options and details to help you decide.
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The Top 8
Top 8 Fertilizers Reviewed in Detail
Here are some excellent choices for affordable fertilizers to enhance your garden or lawn.
1. Editor’s Choice
Scotts Turf Builder WinterGuard Fall Lawn Food, 10 lbs.
- FALL LAWN FERTILIZER: Scotts Turf Builder WinterGuard Fall Lawn Food is a fertilizer that builds strong, deep grass roots for a better lawn next spring
- SUMMER LAWN RECOVERY: Our fertilizer provides nutrients lawns need to help recover from summer heat, drought, and regular activity while preparing roots to take on harsh winter conditions
- APPLY IN FALL TO PREPARE YOUR LAWN FOR WINTER: Apply this grass fertilizer to a wet or dry lawn in the fall
- USE ON ANY GRASS TYPE: This lawn care product is a lawn food for grass that can be used on any grass type
- SMALL LAWN COVERAGE: One 10 lb. bag of Scotts Turf Builder WinterGuard Fall Lawn Food covers 4,000 sq. ft.
Scotts Turf Builder WinterGuard Fall Lawn Food is our top choice for the cheapest fertilizer. This 10 lb bag focuses on building strong grass roots, making it effective for fall applications. It helps lawns recover from summer’s stress and prepares grass for winter. Compared to other options, this product excels in promoting lawn health and strength. Its specific formulation suits those who prioritize grass care over other plants.
In contrast, Miracle-Gro Water Soluble All Purpose Plant Food offers versatility at a lower cost. While it’s great for many plants, it lacks the specialized formula for lawns that Scotts provides. Miracle-Gro feeds a variety of plants, which can be beneficial for gardeners with mixed gardens. This makes it a solid choice for general use.
A key tradeoff for buyers is between lawn-focused fertilizers like Scotts and those suitable for multiple types of plants like Miracle-Gro. Lawns need specific nutrients, while mixed gardens might benefit more from a general fertilizer. This choice impacts overall plant health and growth.
Pros
- Builds strong grass roots for better lawn health
- Effective for fall lawn care
- Helps lawns recover from summer stress
Cons
- Designed specifically for lawns, not for other plants
- May not provide immediate greening like some liquid options
Best for: Lawn care enthusiasts. Not ideal for: Gardeners with mixed plant types.
Scotts Turf Builder WinterGuard Fall Lawn Food is a solid choice for effective lawn care.
2. Runner-Up
Miracle-Gro Water Soluble All Purpose Plant Food, 1.5 lb.
- FEEDS ALL PLANTS: Miracle-Gro Water Soluble All Purpose Plant Food is a plant fertilizer that feeds all outdoor, in-ground and indoor plants, including roses, flowers, houseplants, vegetables, and trees
- PROMOTES GROWTH: Use this all-purpose plant food outdoors and indoors to grow bigger, more beautiful plants (vs unfed plants); starts working instantly to promote quick, beautiful results
- NPK: 24-8-16 outdoor and indoor plant food contains Nitrogen (N), Phosphorus (P) and Potassium (K) which are key nutrients plants need to thrive
- APPLICATION: To use as plant food indoors, mix 1/2 tsp per gallon of water in a watering can; to feed outdoor plants, mix 1-1/2 tbsp per 1-1/2 gallon of water in any watering can or use with the Miracle-Gro Garden Feeder
- COVERAGE: One 1.5 lb. container of Miracle-Gro Water Soluble All Purpose Plant Food can be used as an outdoor and indoor plant food for houseplants, vegetables, flowers, trees, roses and more; feeds approximately 600 sq. ft. of garden area
Miracle-Gro Water Soluble All Purpose Plant Food is our runner-up pick for the cheapest fertilizer. This 1.5 lb bag feeds a wide variety of plants. It works well for indoor and outdoor plants, including flowers and vegetables. The liquid formula makes it easy to apply, delivering nutrients quickly. Compared to other options, it provides versatility, making it suitable for mixed gardens.
While Scotts Turf Builder is focused on lawns, Miracle-Gro shines with its all-purpose capabilities. It can promote growth in many plant types, making it a favorite for gardeners with diverse needs. This product encourages lush, vibrant plants, helping you achieve a colorful garden.
However, the main limitation is that it may not deliver as targeted results for specific plants. If you focus heavily on one type of plant, a specialized fertilizer might yield better outcomes. This can affect how well certain plants grow when using a general fertilizer.
Pros
- Suitable for a variety of indoor and outdoor plants
- Easy to apply with a quick-acting formula
- Promotes healthy plant growth
Cons
- Not specialized for lawns or specific plant types
- Liquid form may require more frequent applications
Best for: Gardeners with diverse plant types. Not ideal for: Those focusing solely on lawns.
Miracle-Gro Water Soluble All Purpose Plant Food is versatile for many plants.
3. Best for Beginners
Scotts Turf Builder WinterGuard Fall Lawn Food, 32.3 lbs.
- FALL LAWN FERTILIZER: Scotts Turf Builder WinterGuard Fall Lawn Food is a fertilizer that builds strong, deep grass roots for a better lawn next spring
- SUMMER LAWN RECOVERY: Our fertilizer provides the plant food nutrients lawns need to help recover from summer heat, drought, and regular activity while preparing roots to take on harsh winter conditions
- APPLY IN FALL TO PREPARE YOUR LAWN FOR WINTER: Apply this grass fertilizer to a wet or dry lawn in the fall
- USE ON ANY GRASS TYPE: This lawn care product is a lawn food for grass that can be used on any grass type
- SMALL LAWN COVERAGE: One 32.3 lb. bag of Scotts Turf Builder WinterGuard Fall Lawn Food covers 12,000 sq. ft.
Scotts Turf Builder WinterGuard Fall Lawn Food in 32.3 lbs is a larger version of our top pick. It is designed to build strong grass roots, making it effective for fall lawn care. The larger size is ideal for those with bigger lawns or for multiple applications. Compared to the 10 lb version, it offers better value for larger areas. This makes it a strong choice for budget-conscious homeowners.
This fertilizer provides essential nutrients that help lawns recover from summer heat and prepares them for winter. It focuses on enhancing root strength, which is important for a healthy lawn come spring. Compared to Miracle-Gro options, this product is strictly for grass, which is a positive for dedicated lawn care.
However, this product may not be the best fit for those with mixed gardens or other types of plants. Its lack of versatility means it is less suitable for gardeners wanting to feed a variety of plants. If you have only flowers or vegetable beds, you might find better results with a more generalized product.
Pros
- Large size suitable for extensive lawns
- Strengthens grass roots for better growth
- Helps lawn recover from summer stress
Cons
- Not suitable for non-lawn plants
- May lead to over-fertilization if misapplied
Best for: Homeowners with large lawns. Not ideal for: Gardeners with varied plant types.
Scotts Turf Builder WinterGuard Fall Lawn Food in 32.3 lbs is great for larger lawns.
4. Best Design
Miracle-Gro Indoor Plant Food for All Plants, 8 fl. oz. (2-Pack)
- INDOOR HOUSEPLANT FOOD: Miracle-Gro Indoor Plant Food All Plants contains nutrients for healthier, stronger plants (vs unfed when used as directed)
- NUTRIENTS FOR HEALTHY HOUSEPLANTS: This liquid plant food for indoor plants feeds instantly to help grow healthy houseplants
- FOR INDOOR POTTED PLANTS: Use house plant food with all indoor container plants, including houseplants, flowers, vegetables, herbs, and more
- DIRECTION FOR USE: This Miracle Gro plant food can be applied directly to the soil then watered or mixed in 1 quart of water to feed plants while watering; reapply every 2 weeks
- FEED YOUR INDOOR GARDEN: This bundle comes with two 8 fl. oz. bottles of plant food for houseplants; for more spectacular results, use with Miracle-Gro Indoor Potting Mix for All Plants
Miracle-Gro Indoor Plant Food for All Plants in 8 fl. oz. is designed specifically for indoor houseplants. It provides essential nutrients that help grow strong and healthy plants. This liquid formula is easy to use, making it a go-to for indoor gardeners. It allows quick absorption, which is a key feature for growing houseplants successfully. Compared to other options, this product is tailored for indoor use and supports healthy growth.
This fertilizer is different from granular types that require mixing and soaking. Instead, it feeds plants directly, which fits the needs of many indoor gardeners. The convenience of not having to mix makes it user-friendly. However, it may not perform as well for outdoor plants or gardens.
A notable limitation is that it’s not suitable for outdoor use. If you care for a garden outside, you will need a different product. This limits its appeal to indoor plant enthusiasts only.
Pros
- Designed for indoor houseplants
- Instant feeding for quick nutrient absorption
- Convenient ready-to-use form
Cons
- Not suitable for outdoor plants
- Limited to indoor use only
Best for: Indoor plant lovers. Not ideal for: Outdoor gardeners.
Miracle-Gro Indoor Plant Food is perfect for nurturing houseplants.
5. Best for Daily Use
Southern Ag All Purpose Granular Fertilizer 10-10-10, 5 LB Size: 5 LB
- Size: 5 LB
- Uniform, homogenous granular formulation .
- CONTAINS: 10% Nitrogen, 10% Phosphorus (P205), 10% Potassium (K20) plus minor elements .
- APPLICATION: Broadcast evenly over area and water in.
- For large quantity discount consideration or to request a mixed multi-pack, please message us.
Southern Ag All Purpose Granular Fertilizer 10-10-10 offers a balanced nutrient profile with equal parts nitrogen, phosphorus, and potassium. This 5 lb option is versatile, working for both gardens and lawns. Its homogeneous granular form ensures even distribution when applied. Compared to other fertilizers, this one is a practical choice for those needing a well-rounded option. It covers a broad spectrum of plant needs effectively.
This fertilizer’s balanced N-P-K ratio allows it to promote steady growth across various plants. It feeds plants evenly without favoring one nutrient over another, making it a solid pick for beginner gardeners. While it suits many plant types, it may not provide the specialized care that some plants require.
A limitation is that it does not focus on the specific needs of lawns or more delicate plants. Gardeners looking for special formulations might find it lacking. This might affect how well individual plants thrive, especially compared to more targeted options.
Pros
- Balanced N-P-K ratio for diverse plants
- Works for both gardens and lawns
- Homogeneous granular form for easy application
Cons
- Not specialized for specific plant needs
- May lead to over-fertilization if used incorrectly
Best for: Beginner gardeners. Not ideal for: Advanced plant care needs.
Southern Ag All Purpose Granular Fertilizer is a versatile choice for new gardeners.
6. Best Lightweight
Miracle-Gro Shake 'N Feed All Purpose Plant Food, 4.5 lb.
- 3 MONTHS OF FEEDING: Miracle-Gro Shake ‘N Feed All Purpose Plant Food feeds plants for up to 3 months, and nourishes above and below the soil
- GROW STRONGER PLANTS: This plant food contains vital micronutrients to grow stronger, vibrant, and more productive plants (vs unfed plants)
- FOR ALL PLANTS: Use this all-purpose plant food outdoor or indoor to feed container plants or plants in outdoor in-ground and raised bed gardens, including flowers, vegetables, and herbs
- APPLICATION: Apply this continuous release garden product evenly onto the soil and work into the top 1-3 inches of soil for in-ground plants, or lightly work into the soil of established container plants; water to start feeding; reapply every 3 months
- NOURISHES ABOVE & BELOW THE SOIL: Indoor and outdoor plant food contains natural ingredients to feed soil microbes that break down the ingredients into nutrients that support root strength and development which increases water efficiency
- COVERAGE: One 4.5 lb. container of Miracle-Gro Shake ‘n Feed All Purpose Plant Food feeds up to 180 sq. ft.
Miracle-Gro Shake ‘N Feed All Purpose Plant Food in 4.5 lb is designed for convenient feeding. It nourishes plants for up to three months, which is a great feature for busy gardeners. This slow-release formula minimizes the need to constantly apply fertilizer. Compared to other products, it offers a longer feeding schedule, ensuring plants have consistent nutrients over time.
This plant food is beneficial for various types of plants, allowing you to use it across your garden. It feeds both above and below the soil, promoting overall plant health. However, it requires proper application to avoid over-fertilization.
A limitation is that it may not provide immediate results as some liquid fertilizers do. Gardeners looking for quick greening may find this slower approach frustrating. This might impact those who want instant effects in their gardens.
Pros
- Long-lasting feeding for up to 3 months
- Slow-release formula for convenience
- Supports both above and below soil health
Cons
- May require careful application to avoid over-fertilization
- Slower results compared to liquid fertilizers
Best for: Busy gardeners needing convenience. Not ideal for: Those wanting quick results.
Miracle-Gro Shake ‘N Feed All Purpose Plant Food offers lasting nutrition for plants.
7. Best Value
Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag
- For more nutritious and tasty vegetables
- Optimum levels of primary plant nutrients
- Contains no GMOs, chicken manure or sewage sludge
- Feeds for several months
- Made with 100% organic and natural ingredients
- Contains pro-biotic, seven champion strains of beneficial soil microbes plus ecto and endo mycorrhizae
- More abundant crops; More nutritious and tasty vegetables
- 100 percent natural and organic; Exceptional results because nutrients are released quickly; Feeds for several months; Consistent premium quality
- Eight select strains of ecto and Endo Mycorrhizae contribute to drought tolerance, enhanced nutrient availability and increased plant performance
- 100-Percent organic formula provides optimum levels of essential plant nutrients; eliminates the need for chemical fertilizers when used as directed
Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer is an organic option made from natural ingredients. This poly bag is designed to enhance the flavor of vegetables and herbs. It contains beneficial microbes, which support healthy soil. Compared to synthetic fertilizers, it promotes long-term plant health and is safer for the environment. This makes it a favorite for organic gardeners.
This product focuses on vegetables and herbs, making it ideal for kitchen gardens. It provides essential nutrients while avoiding harmful chemicals. However, its specific formulation may not work as well for all plant types, particularly for lawns or flowers.
A significant limitation is that it is less versatile than general-purpose fertilizers. Gardeners with a variety of plant types might need additional products. This can lead to added costs and complicate the gardening process.
Pros
- Made from 100% organic ingredients
- Contains microbes for healthy soil
- Enhances flavor of vegetables and herbs
Cons
- Not suitable for lawns or flowers
- Less versatile for mixed gardens
Best for: Organic vegetable and herb gardeners. Not ideal for: Lawn care enthusiasts.
Dr. Earth Organic 5 is an excellent choice for organic gardeners.
8. Best for Small Spaces
Miracle-Gro Pour & Feed Plant Food, 32 fl. oz.
- READY TO USE: This liquid plant fertilizer is a ready-to-use indoor plant food that requires no mixing
- NO MIXING: No mixing with water or watering can needed; simply apply liquid plant food directly to the soil
- FOR POTTED PLANTS: Plant food for houseplants and flowers that instantly feeds all indoor and outdoor container-grown plants
- FEEDING FREQUENCY: Feed indoor and outdoor potted plants with this flower and houseplant food every 10-14 days
- INDOOR AND OUTDOOR USE: Use this plant food outdoors or indoors on all your container plants
Miracle-Gro Pour & Feed Plant Food in 32 fl. oz. is a ready-to-use liquid fertilizer. It requires no mixing, making it easy to use. This product feeds indoor and outdoor plants quickly, providing essential nutrients. Compared to other options, its convenience stands out. It fits well for those who want a straightforward feeding solution without the hassle.
This plant food targets potted plants and flowers, allowing for quick nourishment. Its ease of use makes it a favorite among busy gardeners. However, it may require more frequent applications than granular fertilizers.
A limitation is that it may not deliver as long-lasting effects compared to slower, granular types. Those looking for sustained feeding might prefer products that last longer. This can affect the overall efficiency for dedicated gardeners.
Pros
- Ready-to-use liquid for quick feeding
- No mixing required for convenience
- Targets indoor and outdoor pot plants
Cons
- May require more frequent applications
- Shorter feeding duration than granular options
Best for: Busy gardeners needing quick solutions. Not ideal for: Those wanting long-term feeding.
Miracle-Gro Pour & Feed Plant Food is a convenient option for fast plant care.
Fertilizers Compared Side by Side
The comparison table below shows key features of each product. You will see details on size, type, and intended use. Look at the columns to find the cheapest fertilizer that fits your needs.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | Scotts Turf Builder WinterGuard Fall Lawn Food | Editor's Choice | The Scotts Company LLC | $18.59 | Check |
| 2 | Miracle-Gro Water Soluble All Purpose Plant Food | Runner-Up | Miracle-Gro | $6.98 | Check |
| 3 | Scotts Turf Builder WinterGuard Fall Lawn Food | Best for Beginners | The Scotts Company LLC | $44.62 | Check |
| 4 | Miracle-Gro Indoor Plant Food for All Plants | Best Design | The Scotts Company LLC | $11.68 | Check |
| 5 | Southern Ag All Purpose Granular Fertilizer 10-10-10 | Best for Daily Use | Root 98 Warehouse | $17.43 | Check |
| 6 | Miracle-Gro Shake 'N Feed All Purpose Plant Food | Best Lightweight | The Scotts Company LLC | $9.88 | Check |
| 7 | Dr. Earth Organic 5 Tomato | Best Value | Dr. Earth | $9.97 | Check |
| 8 | Miracle-Gro Pour & Feed Plant Food | Best for Small Spaces | The Scotts Company LLC | $6.16 | Check |
| 9 | Miracle-Gro Water Soluble All Purpose Plant Food | — | Miracle-Gro | $13.99 | Check |
| 10 | Osmocote Smart-Release Plant Food Plus Outdoor & Indoor1 | — | The Scotts Company LLC | $30.67 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How to Choose Fertilizers
Type of Fertilizer
Choose between granular and liquid fertilizers. Granular types are slow-release and good for long-lasting effects. Liquid fertilizers offer quick nutrient access but require more frequent applications. For lawns, granular fertilizers work well, while liquid types suit potted plants.
Nutrient Ratios
Fertilizers have three main nutrients: nitrogen, phosphorus, and potassium. These are shown as N-P-K ratios. For lawns, look for higher nitrogen content. For flowering plants, phosphorus is important. A balanced 10-10-10 option suits most plants.
Application Method
Some fertilizers are ready to use, while others need mixing. Liquid fertilizers can be applied directly to soil. Granular types need to be spread evenly and watered in. Choose a method that fits your gardening style.
Size Considerations
Consider how much area you need to cover. Smaller bags work for small gardens or potted plants. Larger bags are economical for big lawns. It’s better to buy a bag that suits your space to avoid waste.
Environmental Impact
Look for fertilizers that are organic or free from harmful chemicals. Organic options often support healthy soil and plant growth. If you are concerned about chemicals, check labels for safety standards.
How We Reviewed
Where our data comes from
We gathered data on various fertilizers from trusted sources like manufacturer websites and gardening forums. This helped us understand popular options and their specifications.
How we built this shortlist
We reviewed over 30 fertilizers based on features, user reviews, and popularity. We focused on those with the best feedback for effectiveness and ease of use.
What we ruled out and why
We excluded products with limited availability or negative user reviews. Any item with unclear directions or inconsistent results was not included in our list.
What we did not do
We did not conduct hands-on testing or lab measurements. All findings are based on desk research without personal use or invented scores.
How often this page is updated
This page is reviewed and updated every three months. We aim to reflect the latest product offerings and user feedback accordingly.
Frequently asked questions
What is the cheapest fertilizer for lawns?
For lawns, Scotts Turf Builder WinterGuard Fall Lawn Food is a great choice. It strengthens roots and prepares grass for winter. This makes it a solid option for budget-conscious buyers.
How often should I apply fertilizer?
Most fertilizers should be applied every 4 to 6 weeks during the growing season. Follow the directions on the package for best results. Different plants may have unique needs.
Can I use the same fertilizer for all plants?
Some fertilizers are suitable for all plants, like Miracle-Gro Water Soluble All Purpose Plant Food. However, it’s best to match fertilizers to specific plants for optimal growth.
What nutrients do plants need?
Plants primarily need nitrogen, phosphorus, and potassium, known as N-P-K. Each nutrient helps with different growth aspects. Nitrogen promotes leaves, phosphorus supports roots, and potassium aids overall health.
Is organic fertilizer better than synthetic?
Organic fertilizer is often better for soil health and the environment. It improves soil structure and nourishes beneficial organisms. Synthetic options may provide quick results but can harm soil over time.
What to look for
Application Timing
Applying fertilizer at the right time is essential. For lawns, the best time is in the fall. This helps grass develop strong roots before winter. For flowers and vegetables, spring and early summer are ideal.
Watering After Application
Most fertilizers need watering in after application. This helps nutrients seep into the soil. For granular types, water immediately after spreading. Liquid types can be applied directly but may also need some watering.
Safety Precautions
Always use gloves when handling fertilizers. Keep them away from children and pets. Read the labels carefully for proper use and safety information. Following instructions ensures safe and effective application.
Storage of Fertilizer
Store fertilizers in a cool, dry place, away from moisture. This prevents clumping and keeps them effective. Check for any expiration dates to make sure they are still good to use.
Choosing the Right Ratio
Understanding N-P-K ratios helps you choose the right fertilizer. For leafy vegetables, a higher nitrogen ratio is better. Flowers benefit from more phosphorus. Always pick a fertilizer that matches your plants’ needs.
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