A healthy lawn starts with proper nutrition, and organic fertilizers offer a natural way to feed your grass. Unlike chemical options, organic fertilizers improve soil health while nourishing your lawn. We’ve researched the best organic lawn fertilizers to help your grass grow thick and green without harsh chemicals.
Organic fertilizers work slowly, releasing nutrients over time as microorganisms break them down. This gradual release prevents the quick growth spurts and burnout that synthetic fertilizers can cause. Many organic options also contain beneficial microbes that improve soil structure and help your lawn better resist drought and disease.
Links in this article are affiliate links, and we will earn a commission if you buy after clicking on them.
Best Organic Lawn Fertilizers
We’ve carefully reviewed the top organic lawn fertilizers to help you grow a lush, green lawn without harsh chemicals. Our picks are safe for pets, children, and the environment while still delivering excellent results for your grass.
Scotts Natural Lawn Food
- THE ORIGINAL: Plant-tone is the original organic all-purpose plant food. Plant-tone’s natural…
- FOR USE ON: Use Plant-tone organic fertilizer for flowers (annuals, perennials, and roses),…
- CONTAINS: Plant-tone is a rich blend of the finest natural & organic ingredients enhanced with our…
- WHEN / HOW TO USE: Best to use Plant-tone fertilizer spring and fall on trees and shrubs. For roses,…
We highly recommend this eco-friendly fertilizer for pet owners and parents who want a safer, natural way to grow thick, green grass.
Pros
- Safe for kids and pets with no waiting period after application
- Can be used in any season up to four times yearly
- Shows visible results within 1-3 weeks
Cons
- More expensive than chemical fertilizers
- Doesn’t control or prevent weeds
- May attract pets who try to eat it
This OMRI listed natural lawn food provides a simple solution for homeowners seeking an organic approach to lawn care. The 29.1 lb bag covers up to 4,000 square feet, making it perfect for small to medium yards. Unlike harsh chemical alternatives, you can walk on your lawn immediately after applying, with no unpleasant odors to worry about.
Application is straightforward using a standard Scotts drop or rotary spreader. Just apply header strips first, then cover the rest of your lawn in the longest direction. The 11:2:2 formula feeds your grass naturally, helping it grow thicker and greener within just a few weeks.
We appreciate that this fertilizer works for all grass types and can be applied year-round. For best results, use it regularly as part of a complete lawn care routine. While it won’t tackle weeds like some chemical options, it provides essential nutrients without exposing your family or pets to potentially harmful substances.
Espoma Organic Lawn Food
This natural lawn food provides long-lasting nutrients for a healthier, greener lawn without harmful chemicals.
Pros
- Safe for pets and environment
- Works on all grass types
- Won’t burn lawns even in heat
Cons
- Only provides nitrogen (9-0-0)
- Takes longer to see results than chemical options
- More expensive than synthetic fertilizers
The Espoma Organic Lawn Food offers a 9-0-0 formula that delivers nitrogen to your grass in a gentle, sustainable way. We love that it’s enhanced with Bio-tone microbes that help break down nutrients in the soil. This 28-pound bag covers up to 5,000 square feet, making it a good value for most home lawns.
Unlike harsh chemical fertilizers that can damage your lawn if applied incorrectly, this organic option won’t burn your grass or leach harmful substances into groundwater. You can apply it during any season, even during hot weather. The granular formula spreads easily with a standard broadcast or drop spreader.
Many users report thicker, greener lawns after regular application. The slow-release formula feeds your lawn over time rather than all at once. This product works well for all grass types, including fescue, bluegrass, rye, St. Augustine, and zoysia. Since it’s made in the USA and certified for organic gardening, we think it’s perfect for eco-conscious homeowners who want a beautiful lawn without chemicals.
Purely Organic Lawn Food
This family-friendly lawn fertilizer offers a natural solution for green grass without harsh chemicals or unpleasant smells.
Pros
- Made from plant-based ingredients like distillers grains and soy
- Won’t burn your lawn even when applied generously
- Safe for kids and pets with no re-entry restrictions
Cons
- Results may take longer than synthetic fertilizers
- Might need more frequent application for best results
- Limited nutrient profile (10-0-2) compared to some alternatives
We love that this Purely Organic lawn food creates lush, green turf without using dangerous chemicals. The 15-pound bag covers about 3,000 square feet, making it perfect for most residential yards. Its 10-0-2 formula contains no phosphorus, meeting regulations in many towns that restrict phosphate use.
Many homeowners worry about keeping kids and pets off the lawn after fertilizing. That’s not a concern with this product! The natural ingredients mean family members can enjoy the yard immediately after application without safety risks.
The granular formula spreads easily with a standard spreader. We appreciate that there’s no manure or biosolids in the mix, meaning you won’t have to endure unpleasant smells that often come with organic lawn products. While it may work a bit slower than chemical alternatives, the trade-off for a safer, environmentally friendly lawn solution seems well worth it to us.
Down to Earth Bio-Turf Organic Lawn Food
This natural lawn fertilizer deserves a spot in every organic gardener’s shed with its impressive nutrient mix that promotes deep root growth and lush green lawns.
Pros
- Completely organic formula safe for kids, pets, and the environment
- Encourages strong root development that reduces watering needs
- Versatile enough for both lawns and heavy-feeding vegetables
Cons
- More expensive than synthetic fertilizer options
- Results may take longer to appear than chemical alternatives
- Small 4-pound box requires multiple purchases for larger areas
The Bio-Turf formula features an 8-3-5 NPK ratio that’s perfect for giving lawns that boost of nitrogen they crave while providing potassium to help fight drought and temperature stress. We love that it’s OMRI listed for organic production, making it a smart choice for families concerned about chemical exposure in their yards.
Many users report noticeably greener, thicker lawns after regular application. The granular form makes it easy to spread with a standard broadcast spreader. The all-natural ingredients (including feather meal, blood meal, bone meal, and langbeinite) break down gradually, feeding your lawn over time rather than providing a quick burst that fades fast.
This fertilizer pulls double duty in the garden too. Hungry vegetables like tomatoes, corn, and leafy greens thrive with Bio-Turf’s nutrient mix. While the 4-pound box isn’t the most economical option for large properties, the quality of ingredients and versatility make it worth considering for those committed to organic lawn care methods.
Back to the Roots Organic Lawn Food
This ready-to-spray organic liquid lawn food offers a natural way to nourish your lawn without harsh chemicals.
Pros
- Safe for pets and children with all-natural ingredients
- Easy application with ready-to-spray bottle
- Covers a generous 2,000 square feet
Cons
- Some users report an unpleasant smell
- Mixed results on effectiveness
- Higher price point than chemical alternatives
We love how Back to the Roots brings organic care to lawn maintenance with their liquid lawn food. The ready-to-spray bottle makes application super simple – just attach to your hose and spray. No mixing or complicated measurements needed!
The formula contains a unique blend of natural ingredients like soy protein, fish solubles, and kelp. It also includes 1% iron, which helps give your grass that deep green color everyone wants. We appreciate that it works on all lawn types and is completely safe for families with pets and kids.
Coverage is impressive at 2,000 square feet per bottle. The company also runs a #GROWONEGIVEONE program – share a photo of your garden, and they’ll donate a Kids Grow Kit to a classroom. While some users mention the smell can be strong, many report seeing positive results within a couple of weeks. For those committed to organic lawn care, this product offers a convenient solution without harmful chemicals.
Milorganite Organic Fertilizer
This eco-friendly fertilizer offers an excellent balance of safety and effectiveness for anyone wanting a greener lawn without harsh chemicals.
Pros
- Safe for families with kids and pets
- Made from recycled materials for environmental benefits
- Contains iron for deep green color
Cons
- Slight initial odor after application
- More expensive than synthetic options
- Results take time to fully appear
We love how Milorganite takes a different approach to lawn care. Instead of using harsh chemicals, this granular fertilizer uses recycled organic nutrients that slowly release into your soil. The 36-pound bag covers about 2,500 square feet, making it perfect for average-sized lawns.
What makes this product stand out is its family-friendly formula. You don’t need to keep kids or pets off the lawn after applying it. The granules don’t require immediate watering either, which saves time and hassle during application.
The iron content helps deliver that deep green color we all want without causing excessive growth spurts. Many users see results within days, but the real magic happens over time as it improves soil health. While it costs a bit more than chemical fertilizers, the peace of mind and environmental benefits make it worth every penny for organic lawn care.
Jonathan Green Organic Lawn Food
This organic lawn fertilizer offers a safe, long-lasting solution for homeowners who want lush green grass without harsh chemicals.
Pros
- Feeds lawns continuously for 8-10 weeks
- Safe for children and pets with immediate lawn access after application
- Contains iron for deeper green color
Cons
- Higher price point than synthetic alternatives
- Requires more patience to see results
- Limited nutrient profile (mainly nitrogen)
We love that this Jonathan Green organic fertilizer provides steady nutrition for up to 10 weeks. The 10-0-1 formula delivers nitrogen for green growth while avoiding phosphorus overload that many lawns don’t need.
The granules spread easily using any standard spreader. A 17-pound bag covers up to 5,000 square feet, making it suitable for most average-sized lawns. The homogenous granules help ensure even coverage when applied properly.
Safety stands out as a major advantage with this product. Unlike synthetic fertilizers that can burn lawns and require keeping kids and pets away, this organic option lets the whole family enjoy the yard immediately after application. No unpleasant manure smell either! Best results come when applied during late spring through early fall, giving your lawn natural nutrition when it needs it most.
Last update on 2025-04-28 / Affiliate links / Somes Images and Data from Amazon Product Advertising API