Best 8 32 16 Fertilizer For Tomatoes: 7 Options Compared

#1 · Best Overall

1. Miracle-Gro Water Soluble Tomato Food

• Weight: 3 lb
• Form: Liquid

Best for: Large outdoor vegetable gardens.

Why it ranks #1: Its stated 18-18-21 ratio and tomato-and-vegetable formulation make its nutrients explicit; the directions call for feeding every 1–2 weeks.

Approximately 1,200 square feet of stated coverage from a three-pound box makes Miracle-Gro Water Soluble Tomato Plant Food suited to larger outdoor beds. The water-soluble formula works with a watering can or Miracle-Gro Garden Feeder, giving gardeners two listed ways to distribute feed across tomatoes and vegetables.

Mix the product with water and apply every one to two weeks; the recurring schedule gives outdoor gardeners a defined way to feed through the growing season. Compatibility with either a watering can or the Miracle-Gro Garden Feeder lets the application method match the equipment already used. The listing specifies approximately 1,200 square feet per box, which helps frame its garden-scale use. Its 18-18-21 NPK ratio is identified in the supplied description.

Skip it if you want a granular feed lasting up to three months; Miracle-Gro Shake 'N Feed Tomato, Fruit & Vegetable lists that duration.

Outdoor vegetable gardeners with broad beds and watering equipment can use its stated coverage and flexible application options to plan feeding. It is a less convenient fit if you want a dry product or prefer not to mix and reapply frequently.

Listed on Amazon as: Miracle-Gro Water Soluble Tomato Plant Food, 3 lb.

#2 · Concentrated Liquid

2. Farmer's Secret Tomato Booster

• Weight: 8 oz
• Form: Liquid

Best for: Weekly tomato concentrate.

Why it ranks #2: This tomato-specific liquid lists a 3:8:7 ratio, is fortified with humic acid, iron, and calcium, and is diluted for weekly feeding.

A two-teaspoon dose makes one gallon of feed, giving Farmer’s Secret Tomato Booster a concentrated weekly routine for gardeners tending tomatoes through their full life cycle. Its formula is specified for all tomato varieties, while humic acid, iron, and calcium distinguish the nutrient blend from a basic NPK-only listing.

Dilute two teaspoons in one gallon of water, then apply weekly throughout the plant’s life cycle; that repeatable measure gives the gardener a clear feeding workflow. The liquid can be applied to foliage or soil, so the application method can suit the garden routine. Its extra-concentrated formula is stated to produce many gallons from one bottle, useful when storing a small container between batches. The product is tomato-specific, rather than listed for a wider set of crops.

Skip it if you want granules with feed lasting up to three months; Burpee Organic Tomato & Vegetable Granular Plant Food lists that interval.

Tomato growers who want a concentrated liquid and can keep up with weekly dilution will find a clearly specified routine here. It is a narrower fit for gardeners seeking infrequent granular feeding or a formula listed for several crop types.

Listed on Amazon as: Farmer's Secret Tomato Booster Fertilizer – Super Concentrated – 3:8:7 Ratio Fortified with Humic Acid, Iron and Calcium – Grow More Tomatoes (8oz)

#3 · Organic Granules

3. Dynamite Mater Magic

• Weight: 10.88 oz
• Form: Granules

Best for: Organic granular tomato planting.

Why it ranks #3: Its OMRI-listed organic granules state an 8-5-5 ratio with extra calcium, making the nutrient profile and granular form clear.

A shaker lid and directions for mixing granules into the soil make Dynamite Mater Magic a practical choice for gardeners preparing tomato seedlings. Its OMRI-listed organic formula has an 8-5-5 ratio and added calcium, connecting its defined nutrient profile with a soil-first planting workflow for tomatoes and other crops.

For each 8-to-12-inch tomato seedling, the supplied directions call for four capfuls mixed into the top three inches of soil before planting; that ties application to a specific planting stage. The product is granular, so it is handled as a soil amendment rather than diluted as a liquid. Its listed uses extend to vegetables, herbs, and fruit, while the 8-5-5 ratio and extra calcium identify the formula’s stated nutrient components.

Skip it if you want a simple water-mixed feed for established plants; Espoma Organic Tomato! lists a half-cap-per-quart drench.

This suits organic gardeners preparing tomato seedlings who are comfortable incorporating granules into the soil. Its planting directions are specific to seedling size and staged application, so it is not the simplest match for someone seeking only a ready-to-mix liquid routine.

Listed on Amazon as: Dynamite Mater Magic – Organic Tomato Fertilizer for Bigger, Juicier Tomatoes and Vegetables, OMRI Listed, Nitrogen and Calcium-Rich Plant Food – .675 Pound Container with Shaker Lid

#4 · Organic Liquid

4. Espoma Organic Tomato!

• Weight: 8 oz
• Form: Powder

Best for: Organic vegetable soil drench.

Why it ranks #4: This organic liquid is made for tomatoes and vegetables, with directions to dilute half a cap per quart and apply every 2–4 weeks.

A half-cap dose per quart makes Espoma Organic Tomato! easy to measure for a soil drench, with instructions covering tomatoes and other vegetables. Its organic-gardening positioning and two-to-four-week feeding interval suit growers who want a recurring diluted application rather than a granular product mixed into soil.

The directions call for half a cap in each quart of water, followed by thoroughly drenching the plant’s soil; this gives container and garden growers a defined liquid-feed workflow. Applying every two to four weeks makes the schedule less frequent than weekly routines. The listing says the plant food supplies essential nutrients for all tomatoes and vegetables, so it can serve mixed edible plantings. Ingredients are referred to on the label rather than specified in the supplied details.

Skip it if you prefer granules worked into soil before planting; Dynamite Mater Magic has seedling-specific soil-mixing directions.

Choose this for an organic-gardening routine across tomatoes and other vegetables, especially when a measured soil drench every few weeks suits your care schedule. It is less suitable if you want a dry, directly applied granular feed.

Listed on Amazon as: Espoma Organic 8 Ounce Concentrated Tomato! Plant Food – Plant Fertilizer for All Types of Tomatoes and Other Vegetables. for Organic Gardening. Pack of 1.

#5

5. Burpee Organic Granular Food

• Weight: 4 lb
• Form: Granules

Best for: Long-interval organic granules.

Why it ranks #5: Its OMRI-listed granules release nutrients immediately and continue feeding for up to three months, though the supplied data gives no NPK ratio.

Burpee’s granules provide nutrients immediately and continue feeding for up to three months, making this an organic option for gardeners who prefer fewer applications. The tomato-and-vegetable product is OMRI listed, and its directions use an even sprinkle around each plant followed by watering.

Sprinkling the granules evenly around the plant base and watering them in creates a straightforward soil-level routine without mixing a liquid batch. The stated feeding period of up to three months can reduce how often gardeners need to repeat that application. Burpee identifies the product for tomatoes and vegetables, while its description also notes calcium and minor nutrients alongside major nutrients. The product is granular, so the application requires access to the soil around each plant.

Skip it if you want a measured liquid dose applied weekly; Farmer’s Secret Tomato Booster specifies dilution and a weekly schedule.

This fits organic tomato and vegetable growers who value a granular application with an extended feeding interval. It requires watering after spreading and room to apply around plant bases, so it may not suit a liquid-only feeding routine.

Listed on Amazon as: Burpee Organic Tomato & Vegetable Granular Plant Food, 4 lb

#6 · Extended Feeding

6. Miracle-Gro Shake 'N Feed

• Weight: 1.3 lb
• Form: Granules

Best for: Container and in-ground granules.

Why it ranks #6: These tomato, fruit, and vegetable granules contain calcium and micronutrients and feed for up to three months, but no NPK ratio is supplied.

Feeding for up to three months makes Miracle-Gro Shake ’N Feed Tomato, Fruit & Vegetable a low-frequency granular option for both containers and in-ground plantings. Its calcium and micronutrients give the formula a specific edible-crop focus, while natural ingredients feed soil microbes according to the listing.

The product is listed for use in ground and in containers, so gardeners can use the same granular format across those planting setups. Its stated feeding duration of up to three months supports a less frequent routine than short-interval liquid feeding. Calcium helps form stronger cell walls, and the listing connects that function with fruit quality and disorders commonly associated with calcium deficiency. Micronutrients are also included to support plant growth and fruit and vegetable production.

Skip it if you want a concentrated liquid applied while watering; Miracle-Gro LiquaFeed Tomato, Fruits and Vegetables is applied with its feeder.

Tomato and edible-plant growers using containers or garden beds can choose this for a granular routine with a listed three-month feeding period. It is a better fit for soil application than for anyone who prefers feeding through a liquid feeder.

Listed on Amazon as: Miracle-Gro Shake 'N Feed Tomato, Fruit & Vegetable Plant Food, 1 lb.

#7

7. Miracle-Gro LiquaFeed

• Weight: 2.6 lb
• Form: Liquid

Best for: Feeder-based liquid feeding.

Why it ranks #7: This concentrated liquid is for fruits and vegetables and feeds every 1–2 weeks, but requires a separately sold LiquaFeed feeder.

Application through a Miracle-Gro LiquaFeed Feeder or Universal Feeder makes this concentrated liquid a straightforward option for outdoor fruit and vegetable plants. The listing includes tomatoes, peppers, strawberries, and blueberries, and gives a one-to-two-week feeding interval for gardeners using the compatible feeder system.

The concentrate is applied with a LiquaFeed Feeder or Universal Feeder, both sold separately, so the product’s workflow depends on having one of those tools. Feeding every one to two weeks gives a recurring schedule for container or in-ground fruit and vegetable plants. The listed crop range reaches beyond tomatoes to peppers, strawberries, and blueberries, which can be useful in mixed edible plantings. The refill format is identified in the supplied product details.

Skip it if you do not own a compatible feeder; Miracle-Gro Water Soluble Tomato Plant Food works with a watering can.

This suits outdoor growers with a compatible LiquaFeed feeder who want to feed tomatoes alongside other listed fruit and vegetable plants. Account for the separately sold feeder and recurring one-to-two-week schedule before choosing this format.

Listed on Amazon as: Miracle-Gro LiquaFeed Tomato, Fruits and Vegetables Plant Food (2-Pack)