9 bestOrganic Lawn Fertilizerof August 2025
112M consumers helped this year.
6% off
1
Humic Acid Organic Lawn Fertlizer - Fulvic Humic Mineral Blend for Trees, Shrubs, Ornamentals, Vegetables & Crops - Enhancer & Garden Soil Conditioner by FoliarTech, 4L
FoliarTech
9.8
42% off
2
Gaia Green Organic 4-4-4 All Purpose Fertilizer 2kg
Gaia Green
9.6
15% off
3
Miracle-Gro Organics Pure Hen Manure Plant Food 3-1-2, 5kg
Miracle-Gro
9.3
4
Miracle-Gro Organics Pure Hen Manure Plant Food 3-1-2, 2kg
Miracle-Gro
9.0
7% off
5
Young Urban Farmers Gaia Green All Purpose Fertilizer 4-4-4 20kg
Young Urban Farmers
8.7
6
Green Envy Liquid Lawn Food / Fertilizer Concentrate for Any Grass Type (1 Gallon), Turf Care & Healthy Grass
GS Plant Foods
8.4
7
Lawnderlust Super Concentrate (up to 2,000 LITRES) Organic Seaweed Fertilizer Plant Food for Lawn & Garden
Lawnderlust
8.1
8
Jonathan Green & Sons, 11540 Green Up 12-18-8, Seeding & Sodding Lawn Fertilizer, 1500 sq. ft.
Jonathan Green
7.8
9
Young Urban Farmers 800g All Purpose 3-6-4 Organic Granular Fertilizer
Young Urban Farmers
7.5
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A Guide to Selecting the Best Organic Lawn Fertilizer
Choosing the right organic lawn fertilizer can make a big difference in the health and appearance of your lawn. Organic fertilizers are made from natural materials and are generally safer for the environment, pets, and children. When shopping for an organic lawn fertilizer, it's important to understand the key features and how they relate to your lawn's specific needs. By learning about these features, you can make a more informed decision and select a product that will help your lawn thrive naturally.
N-P-K Ratio
The N-P-K ratio stands for Nitrogen (N), Phosphorus (P), and Potassium (K), which are the three main nutrients in fertilizers. This ratio tells you how much of each nutrient is present. Nitrogen helps with leaf growth, phosphorus supports root development, and potassium aids overall health and disease resistance. Ratios can vary, such as 10-0-2 or 4-4-4. Higher nitrogen is good for lush, green lawns, while balanced ratios are better for new lawns or those needing overall support. To pick the right one, consider your lawn’s current condition: if it looks pale or thin, more nitrogen may help; if you’re starting a new lawn, a balanced ratio is best.
Source of Ingredients
Organic fertilizers can be made from a variety of natural sources like composted manure, bone meal, seaweed, or plant-based materials. The source affects how quickly nutrients are released and how safe the product is for pets and children. Some sources, like manure, may have a stronger smell, while others, like plant-based fertilizers, are milder. If you have pets or kids playing on the lawn, you might prefer plant-based or odorless options. If you want a quick boost, look for sources that break down faster, but for long-term feeding, slow-release materials are better.
Release Speed
Release speed refers to how quickly the nutrients become available to your lawn. Some organic fertilizers act quickly, giving your grass a fast boost, while others release nutrients slowly over time. Fast-release fertilizers are good if you need immediate results, such as before a big event. Slow-release options are better for steady, long-term growth and require less frequent application. Think about your goals: if you want ongoing, low-maintenance care, slow-release is ideal; if you need a quick fix, choose a faster-acting product.
Application Method
Organic lawn fertilizers come in different forms, such as granules, pellets, or liquids. Granules and pellets are easy to spread and are good for most lawns, while liquids can be sprayed for quicker absorption. The method you choose depends on your equipment and preference. If you have a spreader, granules or pellets are convenient. If you prefer to use a hose-end sprayer, liquid might be easier. Consider what tools you have and how much time you want to spend applying the fertilizer.
Safety and Certification
Look for fertilizers that are certified organic by reputable organizations. Certification ensures the product meets certain standards and doesn’t contain harmful chemicals. This is especially important if you have children or pets who play on the lawn. If safety is a top concern, always check for organic certification and read the label for any warnings or restrictions.
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