When you are aiming for a fuller, greener lawn that poses less of a weed issue, you can find that organic lawn fertilizer can help.
All these products are manufactured using all-natural ingredients, and besides, they don’t contain harmful chemicals. Our list takes the best that are healthier than chemical fertilizers.
Each organic grass fertilizer here offers all the best for your grass, though selecting the right one that comes with the correct NPK formula can be hard for the first couple of purchases.
Our guides go through how the best organic lawn fertilizer work, and which will offer the best organic lawn care from the top of the best out of our best organic lawn fertilizer reviews.
Why You Need a Good Organic Fertilizer For Lawn
It is good to understand why organic fertilizers can be better for your lawn. Here are a few things to know.
It adds nutrients to the soil and naturally enhances the exchange of nutrients.
Billions of microorganisms in your garden soil are a part of the fertilizing process as they create more nutrients while consuming organic fertilizer.
When you have healthy soil, it can sustain higher moisture levels and attracts larger numbers of earthworms which are natures best lawn care products.
Earthworms are natures best and most efficient way of aerating and draining lawns naturally; additionally, their waste is full of nutrients that which are highly beneficial to plants.
Another benefit is that organic fertilizer is slow release as it breaks down slower than synthetic. Also, they will remain in the soil far longer even when it rains, or you give you lawn a good watering. (Find the Best Liquid Lawn Fertilizer)
Lastly, organic fertilizers are pet and child-safe, so there’s no need to worry about spilling an organic fertilizer as much as a man-made one. You can make your lawn lush and green with little effort.
Top Organic Fertilizer For Lawn Reviews
1. Worm Castings Organic Fertilizer, Wiggle Worm Soil Builder
This one from Unco Industries is one of the most special fertilizers you can buy as it is made from nutritious worm castings. Not only is it one of the best organic lawn fertilizers, but it is also ideal for use on houseplants, vegetables, and flowers.
The manufacturing process enables the works to make this a highly fertile fertilizer filled with nutrients to enable plants to grow strong roots and have rapid growth.
You will find this a great fertilizer, and it works very easily to provide your lawn with all it needs for long-term nutrition and also providing long-term efficiency of the root system.
A little of this fertilizer goes a long way, and 15-pounds offers much more for your grass than many other synthetic chemical fertilizers can.
- Very effective
- Only requires a small amount
- All-natural ingredients
- Money-back guarantee
- May not offer all the benefits of fresh castings
- Need to spread and then water
With a guide price of just over $21, you get one of the best organic fertilizer lawn care products for grass you can get. The lawn food is non-toxic and safe to be around children and pets. One of the downsides being you need to spread the organic lawn care yourself.
2. Safer Brand 9334 Lawn Restore Fertilizer
You quickly find this Safer Brand organic lawn fertilizer is odorless and uses very high-quality ingredients. Every one of the 25-pound bags of lawn food offers a plethora of plant-based ingredients.
The lawn fertilizer offers an NPK ratio of 10-0-6, which is ideal to obtain a dark green, lush lawn. The fertilizer goes right to the grass roots to help them grow strong and thrive in drought or dry conditions, and fend off burning.
The lawn fertilizer is fast to act, and you can see results in four to 5 days.
You can spread the simple lawn care formula anywhere in your garden as it is safe for kids and pets.
- Works in drought conditions and cooler regions
- Doesn’t smell
- Contains no harsh chemicals
- Strengthens lawns from their roots
- More expensive than other options
- Hard to spread
With a guide price of just under $30, this organic lawn fertilizer is more than other options, yet it does provide a large area of coverage. One bag will also cover up to 5,000 square feet of your lawn so that you may have sufficient for repeat use from one bag for optimum lawn health.
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3. Milorganite 62036-MW Organic Milorganite Fertilizer
Milorganite has been used to fertilize golf courses, lawns, and gardens for more than 85 years. Here is an all-purpose organic nitrogen fertilizer you can use as a seed carrier for your lawns, shrubs, trees, flowers, and vegetables. (Learn When to Apply Milorganite)
It contains hardly any salts and won’t burn plants particularly in high temperatures and drought conditions.
There is no need to water your lawn to water it in, as this lawn fertilizer will get moisture next time it rains, or you water your lawn on your regular lawn care schedule.
The Milorganite slow-release organic lawn fertilizer formula delivers close to 3 months of nitrogen, and other nutrients to deliver better root production.
Since grass can use these nutrients longer periods, less fertilizer is lost by leaching into the soil or flowing to groundwater. You will find 85% organic matter to promote beneficial microbial activity. With this, you can enhance your soil’s capacity to grow healthy grass and plants.
Milorganite’s iron delivers a long-lasting green lawn, yet it won’t stain your driveway.
- Easy to use
- Not as much coverage as other options
With a guide price of just under $30, it is a good solution to give your grass or plants extra iron. You may find, even though the bags are larger, you may not get as much total coverage.
4. Purely Organic Lawn Food
Next is Strictly Organic Lawn Food. For years, professional sports venues have been using this brand to keep their grass fields green and lush.
You can have the same in your yard. Rather than food waste rotting in landfills, Strictly Organic takes these and blends them into a highly-effective and inexpensive organic fertilizer.
The fertilizer works y nourishing your lawn from the inside to deliver more nutrients for your lawn.
Unlike synthetic fertilizers, you can use as much as you like as it helps promote dense, healthy growth so that you will find less intrusion by weeds.
One 25 pound bag can cover up to 5,000 square feet. The application is quick and easy.
- Sustainable product
- Highly efficient and non-phosphorous
- No odors
- Pet and child friendly
- Not as cost-efficient as it appears
- May not offer results you expect
With a guide price of just over $22, the fertilizer is cost-effective, although you may need to spread more than the recommendations to obtain the desired results.
5. The Andersons 7-1-2 Innova Premium Organic Fertilizer
This organic Andersons fertilizer is purely plant-derived and comprises no biosolids, compost waste, manure, or animal parts. It is just a soybean-based solution that offers all the vitamins and nutrients your grass requires such as nitrogen, potassium, and phosphorus.
Andersons Innova organic fertilizer comprises high concentrations of amino acids and extended sources of nitrogen which is a slow-release to promote good soil food for beneficial microbes.
The 6:1 carbon-nitrogen ratio provides a great equilibrium for such microbes and fertile grass soil.
A nice thing about this product is it’s safe and reliable to apply and used around pets and children.
It comprises low-dust, homogeneous granules you can apply with conventional spreading methods.
This 40-pound bag of product goes a long way, and you can use a dose of Innova at 3.5-11 pounds per 1,000 square feet.
Using 20 pounds per 1,000 square feet to allow for successful growth for new lawns.
- Safe to use around kids and pets
- Contains no blood meal or animal parts
- Suitable for all grass and climates
- Delivers a slow-release formula
- Needs a spreader to apply
With a guide price of just over $70, it is expensive, yet if you want to use one of the best and money isn’t an issue, the plant-based fertilizer
Organic Fertilizer for Lawn Buying Guide
It is good to understand the types of organic fertilizers you can find. Some may be purely plant-based, or others can come with many other organic materials.
You can also find ones that are byproducts of a natural process such as worm casings. You can also find many are granular while others are liquid such as Dr Earth Super Natural Lawn fertilizer (some use animal products such as bone meal and feather meal).
One of the biggest concerns for many gardeners who wish to go organic is the fertilizers that use animal parts. Much of this is to maintain safe use around children and pets while trying to get a healthy lawn and not affecting their soil.
- Bird & Animal Manures: Good source of nutrients and full of microorganisms.
- Blood Meal: Slow-release nitrogen and trace minerals. Apply before planting and use carefully. (Learn What is Blood Meal)
- Fish Meal/ Emulsion: Great source of nitrogen, phosphorus, potassium, and trace elements.
- Shellfish Meal: Good source of calcium, nitrogen, phosphorus, and micronutrients.
When doing these reviews to find the best organic fertilizer for grass, it was clear which would be the favorite of the bunch.
The Worm Castings Organic Fertilizer, Wiggle Worm Soil Builder rose to the top for a few reasons, and first because it was the best of all the lawn fertilizers on test, and safe for pets and kids.
Worm castings are the best of organic lawn fertilizers you can get for your soil, and they are safe. Nature always has a way of delivering products that are better than man-made organic or synthetic.
Besides this, you can’t use too much, and all you need to do to reap the benefit on your lawn or anywhere is spread the fertilizer.
It is the best organic lawn fertilizer we have tested to make sure you have healthy grass and the best soil health.
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