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4 bestOrganic Lawn Fertilizersof July 2025

Name: Humic Acid Organic Lawn Fertlizer - Fulvic Humic Mineral Blend for Trees, Shrubs, Ornamentals, Vegetables & Crops - Enhancer & Garden Soil Conditioner by FoliarTech, 4L
Brand: FoliarTech
Price: 62.99 CAD
Availability: InStock

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Organic Fertilizers

Lawn Fertilizers

A Guide to Selecting the Best Organic Lawn Fertilizers

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 designed to feed your grass while also improving the soil. When shopping for an organic lawn fertilizer, it's important to understand the key features and how they relate to your lawn's needs. By learning about these specifications, you can select a product that will help your lawn thrive in a safe and environmentally friendly way.

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 in the product. Nitrogen helps grass grow green and lush, phosphorus supports strong roots, and potassium boosts overall health and resistance to stress. Ratios can vary, such as 10-0-2 or 4-3-3. If your lawn needs a boost in green growth, look for a higher nitrogen number. For new lawns or when seeding, a bit more phosphorus can help. For established lawns, a balanced or higher potassium formula can be beneficial. Think about your lawn’s current condition and what you want to improve when choosing the right N-P-K ratio.

Source of Ingredients

Organic fertilizers are made from natural sources like composted manure, bone meal, feather meal, or plant-based materials. The source affects how quickly nutrients are released and how they benefit the soil. Animal-based sources often provide a quick nutrient boost, while plant-based or composted materials release nutrients more slowly and improve soil structure. If you want a fast green-up, animal-based sources may be better, but for long-term soil health, plant-based or blended options are ideal. Consider your preference for animal or plant ingredients and your lawn’s immediate versus long-term needs.

Release Rate

The release rate describes how quickly the nutrients become available to your lawn. Slow-release fertilizers feed your grass over a longer period, reducing the risk of burning and requiring fewer applications. Fast-release options provide nutrients quickly but may need to be applied more often. If you want steady growth and less maintenance, choose a slow-release product. If you need a quick fix for a tired-looking lawn, a faster-release option might be better. Match the release rate to how much time you want to spend on lawn care and how quickly you want to see results.

Form (Granular vs. Liquid)

Organic fertilizers come in granular or liquid forms. Granular fertilizers are easy to spread and provide a slow, steady release of nutrients, making them great for regular maintenance. Liquid fertilizers act faster and are good for giving your lawn a quick boost or treating specific problems. If you prefer a set-it-and-forget-it approach, granular is usually best. If you like to spot-treat or want fast results, liquid might be the way to go. Think about your preferred application method and how hands-on you want to be.

Added Soil Amendments

Some organic fertilizers include extra ingredients like beneficial microbes, mycorrhizae, or humic acids. These help improve soil health, boost nutrient uptake, and support a stronger root system. If your soil is poor or you want to build long-term lawn health, look for fertilizers with these added amendments. If your soil is already healthy, a basic fertilizer may be enough. Consider the current state of your soil and whether you want extra benefits beyond just feeding your grass.