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10 Best Fertilizer For Garlic 2025 in the United States

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#1

Winner

FoxFarm - Big Bloom Plant Food, Liquid Fertilizer Concentrate for Flowers, Fruits, and Vegetables, All Purpose Plant Fertilizer for Indoor & Outdoor Potted Plants, NPK 0-0.5-0.7 (Pint)

Rating
10.0
Chosen by1,387
NPK Ratio
Organic vs. Synthetic

Most important from
11156 reviews

NPK Ratio
Its low NPK ratio is perfect for encouraging root development, flower production, and overall plant health without risking nutrient burn.
Organic vs. Synthetic
The natural ingredients like bat guano and earthworm castings enrich the soil and nurture beneficial microorganisms, leading to healthier, more robust plants.

FoxFarm Big Bloom is an organic liquid fertilizer with a very low NPK ratio (0-0.5-0.7), providing minimal nitrogen, phosphorus, and potassium compared to typical fertilizers. This slow-release formula is rich in natural micronutrients from ingredients like earthworm castings and bat guano, which help improve root health and enhance the flavor and aroma of plants.

Since garlic benefits from a balanced nutrient supply—especially early nitrogen for leaf growth and potassium for bulb development—Big Bloom's low NPK might not fully meet garlic’s nutritional needs on its own. However, its organic nature and micronutrient content can support garlic’s overall health when used alongside a nitrogen-focused fertilizer.

The liquid form is easy to mix and apply, making feeding straightforward for both indoor and outdoor plants. The product is organic and gentle with broad soil pH compatibility, but for best garlic results, soil pH should be monitored separately. If you want a natural, gentle fertilizer to boost plant vitality and flavor, Big Bloom is a good choice, ideally combined with other fertilizers that provide higher nitrogen levels to fully support garlic growth.

Rating
10.0
Chosen by1,387
NPK Ratio
Organic vs. Synthetic

Most important from
11156 reviews

NPK Ratio
Its low NPK ratio is perfect for encouraging root development, flower production, and overall plant health without risking nutrient burn.
Organic vs. Synthetic
The natural ingredients like bat guano and earthworm castings enrich the soil and nurture beneficial microorganisms, leading to healthier, more robust plants.
#2

FoxFarm Fertilizer Soil Trio Liquid Nutrient: Tiger Bloom, Grow Big, Big Bloom Bottles - (Pack of 3-1 Pint)

The FoxFarm Fertilizer Soil Trio is a set of three liquid fertilizers designed to work together to support plant growth in different stages. For garlic, which benefits from good nitrogen for leafy growth, phosphorus for strong roots and bulbs, and a balanced nutrient supply, this trio offers a thoughtful combination. Grow Big promotes strong vegetative growth, which is important early on. Tiger Bloom adds phosphorus and some nitrogen, helping garlic develop robust bulbs and flowers. Big Bloom provides organic nutrients and is gentle enough to use regularly with watering.

These fertilizers are organic, which suits gardeners looking for natural options and makes them safer for soil life and the environment. The liquid form allows quick absorption, but since it's fast-release, it might require more frequent applications compared to slow-release fertilizers. The liquid nature means you have to measure carefully and apply regularly, which might be less convenient than granular options.

This trio serves as a solid choice for home gardeners growing garlic who want organic, well-rounded nutrition and are willing to invest a bit of extra care in application.

#3

Miracle-Gro Pour & Feed Plant Food, Fertilizer Instantly Feeds Live Plants, For Outdoor & Indoor Plants in Containers, 32 oz.

Rating
9.9
Slow-Release vs. Fast-Release

Most important from
5216 reviews

Slow-Release vs. Fast-Release
Provides almost immediate growth to plants, perfect for window boxes and planters.

Miracle-Gro Pour & Feed Plant Food is a convenient, ready-to-use liquid fertilizer designed for both indoor and outdoor container plants. With its no-mixing-required formula, it simplifies the fertilizing process by allowing direct application to the soil, making it user-friendly for those who prefer a hassle-free gardening experience.

Its immediate feeding capability means plants receive nutrients quickly, which can be beneficial for fast-growing plants. The recommended feeding frequency is every 1-2 weeks, which helps maintain consistent nutrient levels in the soil.

Miracle-Gro Pour & Feed is a convenient option for general container plants.

Rating
9.9
Slow-Release vs. Fast-Release

Most important from
5216 reviews

Slow-Release vs. Fast-Release
Provides almost immediate growth to plants, perfect for window boxes and planters.

Buying Guide for the Best Fertilizer For Garlic

Choosing the right fertilizer for your garlic is crucial for ensuring a healthy and bountiful harvest. Garlic is a heavy feeder, meaning it requires a good amount of nutrients to grow well. When selecting a fertilizer, you need to consider the specific needs of garlic plants, the soil condition, and the growth stage of the garlic. Here are some key specifications to help you make the best choice for your garlic crop.
NPK RatioThe NPK ratio stands for Nitrogen (N), Phosphorus (P), and Potassium (K), which are the three primary nutrients in fertilizers. Nitrogen promotes leafy growth, phosphorus supports root development and flowering, and potassium enhances overall plant health and disease resistance. For garlic, a balanced NPK ratio like 10-10-10 or one slightly higher in nitrogen, such as 12-6-6, is often recommended. If your soil is already rich in nitrogen, you might opt for a lower nitrogen ratio. The right NPK ratio ensures that your garlic gets the necessary nutrients at different growth stages.
Organic vs. SyntheticOrganic fertilizers are derived from natural sources like compost, manure, or bone meal, while synthetic fertilizers are chemically manufactured. Organic fertilizers improve soil structure and microbial activity over time, which is beneficial for long-term soil health. Synthetic fertilizers provide nutrients more quickly and can be more precisely formulated. If you prefer a more sustainable approach and are willing to wait for gradual nutrient release, organic fertilizers are a good choice. For quicker results and more control over nutrient levels, synthetic fertilizers might be more suitable.
Slow-Release vs. Fast-ReleaseSlow-release fertilizers gradually release nutrients over time, providing a steady supply to the garlic plants. Fast-release fertilizers deliver nutrients quickly, which can be beneficial if your plants show signs of nutrient deficiency. Slow-release fertilizers are ideal for long-term feeding and reducing the risk of nutrient burn, while fast-release fertilizers are useful for giving your garlic a quick boost, especially during critical growth stages. Consider your garlic's growth stage and immediate nutrient needs when choosing between these options.
MicronutrientsIn addition to the primary nutrients (NPK), garlic also benefits from micronutrients like calcium, magnesium, sulfur, and trace elements such as iron, zinc, and manganese. These micronutrients play vital roles in various plant functions, including enzyme activity and chlorophyll production. A fertilizer that includes micronutrients can help prevent deficiencies and promote overall plant health. If your soil test indicates a lack of specific micronutrients, look for a fertilizer that addresses those deficiencies.
Soil pH CompatibilityGarlic prefers slightly acidic to neutral soil with a pH range of 6.0 to 7.0. Some fertilizers can alter the soil pH, so it's important to choose one that is compatible with your soil's current pH level. If your soil is too acidic or too alkaline, you may need to adjust the pH before applying fertilizer. Soil testing can help you determine the pH and choose a fertilizer that will maintain or adjust the pH to the optimal range for garlic.

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