Nitrogen Fertilizers For Seedlings
Nitrogen fertilizers are essential for promoting healthy growth in seedlings. The products displayed on this page contain varying concentrations of nitrogen to support proper plant development.
These fertilizers typically consist of ammonium nitrate, urea, or ammonium sulfate as the primary nitrogen sources. They can be applied directly to the soil or diluted in water for easy absorption by the seedlings.
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Down To Earth Organic Starter Mix 1 lb
$13.99 Buy Now– Brand: Down To Earth All Natural Fertilizers
– Product Dimensions: 4.25 x 2.12 x 5.5 inches; 1.04 Pounds
– Item model number: 17836
– Date First Available: July 9, 2015
– Form: Solution Grade
– Ingredients: Alfalfa Meal, Fish Bone Meal, Langbeinite, Oyster Shell, Basalt, Feather Meal, and Humic Acids from Leonardite
– OMRI Listed for organic production
– Mild fertilizer with 3-3-3 NPK ratio
– Provides essential secondary plant nutrients
– Suitable for delicate young starts and new seedlings -
FoxFarm FX15001 Veggie Cultivation Nation, 1 lb
$12.94 Buy Now– Cultivation Nation Soluble fertilizers
– 2-part growing system
– VEGGIE for plant size and structure
– FLOWER for fruit and bud development
– Highly concentrated and cost effective
– Can be used as stand-alone fertilizers
– Part of Cultivation Nation 2-Part Soluble Feeding Program
– Immediately available nutrients
– Formulated for vegetative growth cycle and fruiting/flowering stages -
Greenway Biotech Organic Crustacean Meal Fertilizer 4-0-0 (5 lbs)
$29.99 Buy Now– Item Weight: 5 Pounds
– Manufacturer: Greenway Biotech, Inc.
– ASIN: B08HB5L1VX
– Country of Origin: USA
– Composition: Nitrogen-40%, Calcium-12%, Magnesium-1.33%
– Features: Contains calcium, nitrogen, and essential minerals, high level of chitin, time release quality, all in one fertilizer -
Lesco 18-24-12 Starter Fertilizer NOS: Covers 12,000 sqft
$87.94 Buy Now– Brand: Lesco
– Fertilizer Type: Starter Fertilizer with NOS
– Nutrient Blend: Nitrogen (N), Phosphorus (P), Potassium (K)
– Coverage: 50 pounds covers approximately 12,000 sq ft
– Exclusive DCD-infused stabilized nitrogen technology
– Country of Origin: USA
– Manufacturer: Lesco
– Item Weight: 50 Pounds
– ASIN: B0CTQZF163
– Date First Available: February 1, 2024
– Non-returnable
– Recommended alternative: LawnSynergy 15-20-10 -
Bonsai Fertilizer Pellets | 18-6-8 Slow Release | 5.2 oz
$10.38 Buy Now– Price: $23.97
– Size: 5.2 ounces
– Nutrient blend: 18-6-8 slow release pellets
– Suitable for all bonsai tree varieties
– Made in the USA for high quality and safety standards
– Promotes better water management for healthy growth
– Great gift idea for bonsai enthusiasts
– Customer satisfaction guaranteed with excellent customer service
– 18-6-8 slow release fertilizer pellets suitable for all varieties of bonsai trees
– 6 month timed release for minimal upkeep
– Durable packaging with resealable bag
– Made and packaged in the USA for quality assurance
– Money back guarantee for peace of mind -
FOOP Garden Pack: Organic Fish Manure Plant Food & Spray
$39.99 Buy Now– General-purpose organic plant food
– Broad spectrum of organic nutrients
– Made from high-quality organic ingredients
– Promotes larger, healthier plants
– Approved for organic use by OMRI
– Made in the USA -
Sale!
Organic Worm Castings Fertilizer, 4.5 lbs (3 Pack)
Original price was: $35.98.$31.46Current price is: $31.46. Buy Now– Package Dimensions: 15 x 12 x 12 inches; 13.5 Pounds
– Manufacturer: Wiggle Worm
– ASIN: B0CV81B2YW
– Country of Origin: USA
– Pure worm castings, not vermicompost containing uneaten worm bedding
– A little goes a long way, only need a small handful to a half a cup per plant
– Improves soil structure, helps improve soil aeration and root’s ability to retain water
– Suitable for indoor and outdoor use, non-toxic and odor free
– Easy to use, apply to the top of the soil three times a year or add to the hole when transplanting/seeding
– Certified organic, OMRI listed and CDFA certified Organic Input Material
– Created by nature, provides optimal plant growth -
Bloom City Tomato & Veggie Plant Food, Gallon Size
$39.99 Buy Now– Brand: Bloom City
– Package Dimensions: 11.85 x 5.94 x 5.94 inches; 8 Pounds
– Date First Available: April 29, 2022
– Manufacturer: Bloom City
– ASIN: B09Z7B5CH5
– Country of Origin: USA
– Suitable for all plants, including houseplants and hydroponics
– Organic Tomato and Veggie formula for major and micro nutrients
– Safe for use around kids and pets, no harsh chemicals
– Easy application with watering can or hose end sprayer
– Sustainable fertilizers with organic ingredients like wild Atlantic kelp and fish bone meal -
Bloom City Organic Kelp Foliar Spray, 1/2 Pint
$11.99 Buy Now– 100% organic plant foliar spray
– High levels of kelp, magnesium, fulvic acid, and trace micronutrients
– Can be used on houseplants, greenhouse plants, and outdoor plants
– Formulated and made in the USA
– Designed by botanists and plant chemists
– Package dimensions: 6.06 x 1.85 x 1.81 inches; 8 ounces
– Date first available: January 26, 2021
– Manufacturer: Bloom City
– ASIN: B08JHH5P3Y
– Country of Origin: USA -
MARPHYL Organic Liquid Fertilizer for Indoor and Outdoor Plants
$76.90 Buy Now– Brand: MARPHYL
– Product: Organic Liquid Soil Enhancer
– Size: 4L
– Includes: Supplement + Fleur de Sel Salt
– Features: Organic, sustainable, hand-harvested
– Benefits: Boosts plant health, enhances soil quality
– Usage: Ideal for indoor and outdoor plants, vegetables, flowers, trees, lawns, and more
– Application: Water-soluble fertilizer, recommended for use every two weeks -
Organic 2-0-0 Fertilizer Quart
$19.95 Buy Now– Product: Mission Fertilizer Raices Roots 2-0-0 Organic Fertilizer
– Total Nitrogen (N): 2%
– Derived from mined seabird guano
– Available in different sizes: Quart, Gallon, 2.5 Gallon, 5 Gallon, 2.75lb, 7lb, 24lb
– Available in Liquid or Granular form
– Manufacturer: Mission Fertilizer
– ASIN: B07748LWDB
– Designed for explosive root growth during early plant life
– Best results when used with recommended Mission Fertilizers according to feeding schedule -
Organic Bio-Fish Fertilizer Mix 7-7-2, 25 lb
$56.53 Buy Now– Brand: Down To Earth
– Product: Bio Fish Fertilizer
– Weight: 25 pounds
– Formula: 7-7-2
– Listed by the Organic Materials Review Institute (OMRI)
– Suitable for organic production
– Ideal for heavy feeders like corn, cole crops, tomatoes, and vegetable gardens
– Can be used throughout the growing season
– Rich in nitrogen and phosphorus -
Rock Solid Bloom Booster – 0-4-4 (Gallon)
$35.96 Buy Now– Designed to work together seamlessly
– Provides essential macro and micro nutrients
– Promotes flower development and increase yield
– Comprehensive line of products for all stages of growth
– Simple, effective, and high-quality solution
– Manufacturer: Growth Science
– Item model number: GSCRSG
– Dimensions: 6 x 6 x 11.8 inches; 9.5 Pounds
– ASIN: B00YBHAAVM
– Manufacturer: Growth Science
– Price: $35.96
– Date First Available: May 27, 2015 -
Monterey 1gal Seed Starter Concentrate 1-1-1
$39.99 Buy Now– Protects and develops newly seeded plants
– Improves soil nutrition with Nitrogen and Phosphate
– Encourages vigorous root growth
– Flexible use on lawns, gardens, or any seeded environment
– Covers 32,000 square feet
– Instructions for mixing ratios and application methods -
Sale!
VIVOSUN Nutrients Base A & B Bundle, 8oz – All Purpose Liquid Fertilizer
Original price was: $21.99.$18.99Current price is: $18.99. Buy Now– Brand: Vivosun
– Smart grow system for optimal lighting and ventilation
– Concentrated blend of holistic macro and micronutrients
– Rich spectrum of key elements for robust growth
– 100% water-soluble nutrient base kit
– Compatible with all growing media
– Easy to use, only two bottles needed for entire growth cycle -
FloraNova Grow and Bloom Fertilizers, 1 pt. Bottles
$36.69 Buy Now– FloraNova Grow and FloraNova Bloom liquid base fertilizers
– Concentrated and robust formula for vigorous plant growth
– Suitable for use in hydroponics, soilless mixtures, potted plants, or garden-grown plants
– Promotes root, stem, foliage, flowering, and fruit development
– Simplifies feeding with fewer bottles and easy-to-use liquid format -
Sale!
Plant Vitamin Solution & Start with Vitamin B-1, 1-Gallon
Original price was: $192.95.$175.75Current price is: $175.75. Buy Now– SUPERthrive VI30179 Plant Vitamin Solution, 1 Gallon
– Highly concentrated non-toxic vitamin solution
– Invigorates all variety of greenery
– Maximizes potential by building strong root base and reducing transplant shock
– Replenishes soil and encourages natural building blocks in plants
– Ideal for home gardeners and professionals
– Not sold in WI,SD -
Organic 8 oz BioActive Supercharger for All Plants
$19.69 Buy Now– Product: BioActive Supercharger
– Manufacturer: Purple Cow Organics
– ASIN: B0BBNF8G8G
– Country of Origin: USA
– Package Dimensions: 7.01 x 6.34 x 1.81 inches; 7.76 ounces
– Soluble powder that can be used in water or Purple Cow CX-1
– Quick results in feeding plants at the leaf surface and root system
– Contains calcium, humic acid, and trace minerals
– Approved for organic growing systems
– Used by professional farmers and growers for organic and conventional food production -
Fox Farm Liquid Plant Nutrients Pack + Twin Canaries Chart
$67.99 Buy Now– Designed for use in hydroponic and soil applications
– Contains essential macro and micronutrients
– Supports root efficiency and nutrient uptake
– Helps plants achieve enhanced sweetness qualities
– Encourages water movement through soil
– Can be used for both seedlings and mature plants -
VPS Support 4-0-0 (Cal-Mag + Secondary Macros) 1 Gal
$49.50 Buy Now– VPS Support is a Cal-Mag and secondary macro nutrient supplement
– Supports plant photosynthesis and translocation
– Designed to be complete in composition, but not wasteful
– Built to be complementary and focused
– Chelated, fully soluble nutrients with proprietary amino acids
– Increases overall nutrient availability to the plant -
Katyayani NPK 19-19-19 Plant Food Fertilizer (470gm/1lb)
$23.66 Buy Now– Brand: NPK 19 19 19
– Water soluble fertilizer containing all required nutrients for plants
– Nitrogen, Phosphorus, and Potassium content for leaf growth, root growth, and overall plant functions
– Instant uptake of nutrients for quick improvement in crop
– Dosage: 2 grams per liter of water, instructions included
– Suitable for home gardens, potted plants, hydroponic systems, and agricultural purposes -
22-Pc Slow-Release Organic Fertilizer for Easy Plant Feeding
$5.99 Buy Now– Home Gardening Universal Slow-release Tablet Organic Fertilizer
– Balanced Nutrient Proportion of nitrogen, phosphorus, and potassium
– Boosts Plant Growth and Health
– Wide Range of Applications for various plants
– Organic and Eco-friendly, safe for plants, pets, and the environment -
Katyayani NPK 19-19-19 Plant Food Fertilizer + Booster (1lb)
$33.00 Buy Now– NPK 19 19 19 fertilizer
– Water soluble
– Contains all required nutrients for plants
– Essential for vegetative growth and seed/flower formation
– Instant uptake of nutrients by plants
– Dosage: 2 grams per liter of water
– Ideal for home gardens, potted plants, hydroponic systems, and agricultural purposes
– Improves reproductive and vegetative activities in plants -
Sale!
FoxFarm Cal-Mag Organic Plant Supplement | 1 Quart + Chart
Original price was: $24.99.$22.99Current price is: $22.99. Buy Now– Price: $22.99
– Size: 16 fl oz Bottle
– Cal-Mag Supplement: 1 – 0 – 0, 3% Calcium 0.9% Magnesium
– OMRI Listed and CDFA Registered for Organic Gardening
– Prevents blossom end rot or tip burn
– Twin Canaries Chart included with every order -
054BLOOM Reproductive Growth Nutrient (1-Pint) – Professional System
$9.99 Buy Now– Product Dimensions: 2.5 x 2.5 x 8 inches; 1.32 Pounds
– NPK Ratio: 0-5-4
– Derived from highly purified ingredients including Magnesium and Sulfur
– Suitable for hydroponic applications, soil, and coco coir
– Part of the Natural Hydroponics Professional Nutrient System -
USDA BioPreferred Approved Organic Liquid Fertilizer
$24.99 Buy Now– Item Weight: 3.5 Pounds
– Item model number: NWS-32-LF
– Date First Available: May 1, 2023
– Manufacturer: genric
– ASIN: B0822RH5L3
– Country of Origin: USA
– Nutrient-Rich Formula
– Biopreferred Certification
– Enhances Soil Health
– Versatile Use
– Easy Application
– Eco-Friendly -
DUNGER Organic-Mineral Fertilizer for All Crops: NPKS (Ca+Mg)
$24.99 Buy Now– Organic-Mineral Fertilizer
– NPKS (Ca+Mg) content: 4-5% Nitrogen, 2-4% Phosphorus, 1-2% Potassium, 12-14% Sulfur, 15-18% Calcium, 0.5-1.5% Magnesium
– Contains 8-12% Humic Compounds and 30-35% Organic Matter
– Application advantages include improved root development, increased yields, and better taste of products
– Fertilizer has a long action range and helps compensate for nutrient deficiencies in plants -
Sale!
MicroNutrient Plant Food & Lawn Fertilizer (32oz.) USA Made
Original price was: $49.99.$39.99Current price is: $39.99. Buy Now– Package Dimensions: 7.4 x 5.6 x 3.6 inches; 2 Pounds
– Date First Available: May 12, 2021
– Manufacturer: Covington
– ASIN: B094S4VCKS
– Country of Origin: USA -
Fox Farm Liquid Nutrient Trio- 16 oz. Bottles (Pack of 3)
$34.99 Buy Now– FoxFarm Big Bloom: live culture of vitamins, amino acids, natural growth hormones, enzymes, and beneficial organic microbes
– FoxFarm Grow Big Hydroponic Liquid Plant Food: fast-acting liquid concentrate fertilizer for hydroponic use
– FoxFarm Tiger Bloom: ultra-potent, high phosphorus fertilizer with nitrogen for growth and vigor
– Fox Farm Liquid Nutrients: ideal for mature, late-season flowers and fruit
– Use Grow Big for green growth, Tiger Bloom for flowering, and Big Bloom throughout all growing cycles -
Katyayani NPK 19-19-19 Water Soluble Fertilizer 1kg (2.2lb)
$49.00 Buy Now– NPK ratio: 19-19-19
– Water soluble fertilizer
– Contains all required nutrients for plants
– Instant uptake of nutrients by plants
– Dosage: 2 grams per liter of water
– Ideal for home gardens, potted plants, hydroponic systems, and agricultural purposes
