20 Best Double Dark Fertilizer [2024]

Are you looking for the best double dark fertilizer? Based on expert reviews, we ranked them. We've listed our top-ranked picks, including the top-selling double dark fertilizer.

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# Preview Product
1 16-0-0 Double Dark Granular Lawn Fertilizer (with 6% Iron) Covers 15,000 Square Feet - Includes... 16-0-0 Double Dark Granular Lawn Fertilizer (with 6% Iron) Covers 15,000 Square Feet - Includes...
2 Double F Farms Premium Organic 100% Natural Straw for Animal Bedding, Garden Mulch, Compost &... Double F Farms Premium Organic 100% Natural Straw for Animal Bedding, Garden Mulch, Compost &...
3 24-0-6 Flagship Granular Lawn Fertilizer with 3% Iron, Bio-Nite, 45 lb Bag Covers 15,000 sq ft, 6%... 24-0-6 Flagship Granular Lawn Fertilizer with 3% Iron, Bio-Nite, 45 lb Bag Covers 15,000 sq ft,...
4 The Andersons Professional PGF Complete 16-4-8 Fertilizer with Humic DG 10,000 sq.ft. The Andersons Professional PGF Complete 16-4-8 Fertilizer with Humic DG 10,000 sq.ft.
5 Premium Double Sifted Clean Hardwood Ash (Natural Fertilizer, Aquaponics, Change Soil Ph Levels,... Premium Double Sifted Clean Hardwood Ash (Natural Fertilizer, Aquaponics, Change Soil Ph Levels,...
6 Chelated Liquid Iron +Plus Concentrate Blend, Liquid Iron for Lawns, Plants, Shrubs, and Trees... Chelated Liquid Iron +Plus Concentrate Blend, Liquid Iron for Lawns, Plants, Shrubs, and Trees...
7 Liqui-Dirt Nano Powder All-Purpose Organic Complete Plant Food for Indoor or Outdoor Use (Makes over... Liqui-Dirt Nano Powder All-Purpose Organic Complete Plant Food for Indoor or Outdoor Use (Makes...
8 Purely Organic Tree & Shrub Fertilizer Plant Food Spikes (Box of 6 Spikes - 1.5 Lbs) Purely Organic Tree & Shrub Fertilizer Plant Food Spikes (Box of 6 Spikes - 1.5 Lbs)
9 AeroGarden Liquid Nutrients (1 Liter) AeroGarden Liquid Nutrients (1 Liter)
10 7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000... 7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers...
11 BOUGAIN 50lb Bag, Bougainvillea Fertilizer BOUGAIN 50lb Bag, Bougainvillea Fertilizer
12 Knockout ' Double Rose, 1 Gallon, Bubblegum Pink Knockout ' Double Rose, 1 Gallon, Bubblegum Pink
13 Espoma 839291COMBO n/aa GM25 Organic 3-2-3 Chicken Manure, 25 lb-2 Pack, Brown/A Espoma 839291COMBO n/aa GM25 Organic 3-2-3 Chicken Manure, 25 lb-2 Pack, Brown/A
14 Turf Titan Thatch Buster - Made in USA Liquid Lawn Aerator & Detacher, Soil Conditioner & Liquid... Turf Titan Thatch Buster - Made in USA Liquid Lawn Aerator & Detacher, Soil Conditioner & Liquid...
15 Scotts Turf Builder Summer Lawn Food, 9.42 lbs. Scotts Turf Builder Summer Lawn Food, 9.42 lbs.
16 The Andersons Green Shocker 7-1-2 Fertilizer with Humic DG 16 lb Bag The Andersons Green Shocker 7-1-2 Fertilizer with Humic DG 16 lb Bag
17 Dr. Earth 708P Organic 9 Fruit Tree Fertilizer In Poly Bag, 4-Pound Dr. Earth 708P Organic 9 Fruit Tree Fertilizer In Poly Bag, 4-Pound
18 Bud Doublin Micros - All Natural Bud Fertilizer with Humic and Fulvic Acid (1 Quart) - Organic... Bud Doublin Micros - All Natural Bud Fertilizer with Humic and Fulvic Acid (1 Quart) - Organic...
19 J R Peters Jacks Classic No.4 10-30-20 Blossom Booster Fertilizer - 51064 J R Peters Jacks Classic No.4 10-30-20 Blossom Booster Fertilizer - 51064
20 Ironite 100519460 1-0-1 Mineral Supplement/Fertilizer, 15 lb (Packaging May Vary) Ironite 100519460 1-0-1 Mineral Supplement/Fertilizer, 15 lb (Packaging May Vary)
Bestseller No. 1
Bestseller No. 2
Double F Farms Premium Organic 100% Natural Straw for Animal Bedding, Garden Mulch, Compost &...
  • Premium Organic 100% All Natural Wheat Straw
  • Ideal for out-door pet bedding, chicken coop, small animals, etc
  • Ideal for garden mulch. Adds additional bio mass and helps reduce weeds.
  • Perfect for Feral Cat Bedding
  • Perfect for Mushroom cultivation
Bestseller No. 3
24-0-6 Flagship Granular Lawn Fertilizer with 3% Iron, Bio-Nite, 45 lb Bag Covers 15,000 sq ft, 6%...
  • 24% SLOW RELEASE NITROGEN
  • 6% POTASSIUM
  • 3% IRON
  • DEEP DARK BLUE-GREEN COLOR
  • COVERS 15,000 SQUARE FEET
Bestseller No. 4
The Andersons Professional PGF Complete 16-4-8 Fertilizer with Humic DG 10,000 sq.ft.
  • Super fine particles which give you TWICE the number of particles per square foot. More particles, better and more even distribution.
  • Lower nitrogen strength allows you to apply more particles per square foot.
  • Slow release and feeds for up to 8 weeks.
  • Humic DG (humic and fulvic acid) which helps enrich your soil and allows plants to process nutrients better.
  • Not Sold in California
Bestseller No. 5
Premium Double Sifted Clean Hardwood Ash (Natural Fertilizer, Aquaponics, Change Soil Ph Levels,...
  • Highest Grade Premium Hardwood Ash double sifted like coarse flour
  • Chicken Dust Bath - Perfect Texture
  • Natural Fertilizer, Compost Boost, Organic Soil Sweetener
  • Ceramic Ash Glaze, Aquaponics Ph adjustment, Melt Ice, and countless other uses
  • Raise pH and increase Ca, Mg, P, or Mo in soil
Bestseller No. 6
Chelated Liquid Iron +Plus Concentrate Blend, Liquid Iron for Lawns, Plants, Shrubs, and Trees...
  • ✔️ When plants are deficient in Iron, growth can become stunted or yellowing takes place eventually taking it’s toll on the plants or turf. Our...
  • ✔️ Use Our Liquid Iron on Trees, Shrubs, and Bushes by applying around the outside of the grow line according to Instructions. Decrease plant and...
  • ✔️ Iron deficient leaves will be green veined with a streaked yellow color in the plant tissues between the veins. Foliage may also develop brown...
  • ✔️ MADE IN USA We are a Family Owned business with a long history of experience in the farming and turf industry. Covington products are used...
Bestseller No. 7
Liqui-Dirt Nano Powder All-Purpose Organic Complete Plant Food for Indoor or Outdoor Use (Makes over...
  • BENEFITS: Makes 6400 applications for house plants. (Makes 50 gallons, Each gallon makes 128 applications) Its like a full ecosystem in a bottle that...
  • WHAT IS IT? Fully Digested Elemental, Nutrient Supplement System for all plants. All vitamins and minerals with the microbial index are essential to a...
  • HOW ITS MADE: Through our Zymology process we break down the 18 ingredients into thousands of separate fully digested and readily absorbable elements....
  • WHATS IN IT: 18 Balanced Super Nutrients For Plants Including Poultry Litter, Rabbit Manure, Bat Guano, Cricket Fras, Humic Shale, Worm Castings,...
  • HOW LONG DOES IT LAST: This product does not expire, in any dilution or concentrated form. Our powder is made to react immediately in the water you...
SaleBestseller No. 8
Purely Organic Tree & Shrub Fertilizer Plant Food Spikes (Box of 6 Spikes - 1.5 Lbs)
  • Fast acting, long lasting, robust nutrition feeds trees, evergreens and shrubs
  • 5 Inch TruSpikes are packed with fertilizer. They're easy to hammer in (no cap required) and will not break, crush or shatter
  • Rich Molasses Formula. OMRI Listed for Organic Use.
  • Simple to use. For best results, feed once per season -- early spring, and late fall -- for continuous fertilization
  • Nutrient Rich 7-0-2 Formula with natural ingredients contains 7% Nitrogen for plant growth and color; and 2% Potassium for strong roots. Fertilizer...
Bestseller No. 9
AeroGarden Liquid Nutrients (1 Liter)
  • Liquid plant food contains a pH buffering system great for houseplants and all hydroponic gardening applications for consistent, fast growth
  • Indoor gardening with an AeroGarden growing system provides water and food reminders to help plants thrive
  • Plant fertilizer is instantly available to plants and improves the release of critical micronutrients
  • This Indoor plant food is great paired with our Easy Feed Plant Food Nutrient Dispensers (sold separately) that provide precise measurements in...
  • 1 Liter food for plants has a long shelf life and provides more than 100 AeroGarden feedings
Bestseller No. 10
7-0-20 Summer Lawn and Turf Stress Granular Fertilizer Blend (with Bio-Nite 45lb Bag - Covers 15,000...
  • Covers 15,000 Square Feet
  • 7% Slow Release Nitrogen
  • 3% Iron
  • 20% Potash
  • Safe For All Lawns Year Round
Bestseller No. 11
BOUGAIN 50lb Bag, Bougainvillea Fertilizer
  • Formulated specifically for bougainvillea
  • Dramatically increases blooms
  • 5% Iron content is the key to beautiful bougainvillea
  • Easy to apply granular, no mixing, once-a-month application
  • Created and used by BGI - the largest bougainvillea nursery in the country
Bestseller No. 13
Espoma 839291COMBO n/aa GM25 Organic 3-2-3 Chicken Manure, 25 lb-2 Pack, Brown/A
  • All natural and organic chicken manure
  • Dehydrated and pelletized for easy application
  • Feeds plants slowly and safely and conditions soil with Organic matter
Bestseller No. 14
Turf Titan Thatch Buster - Made in USA Liquid Lawn Aerator & Detacher, Soil Conditioner & Liquid...
  • HASSLE FREE: Enjoy a beautiful lawn without the struggle of aeration raking or an aerator lawn tool. Our lawn solutions are a powerful alternative for...
  • DEEP SOIL CONDITIONER: Our Turf Titan Thatch Buster soil conditioner and liquid soil loosener slackens compacted soil. Thatch Buster enhances root...
  • IMPROVES SOIL HEALTH: Turf Titan Thatch Buster contains a profound mineral and nutrient profile, making it an indispensable formula. It reduces the...
  • EASY TO USE: Our thatch buster was designed to be easy to use. An 8,000-square-foot area can be treated with a bottle of concentrated formula like a...
  • MADE IN THE USA: Turf Titan Thatch Buster is manufactured in the United States. Turf Titan is a family-owned and operated biotech company backed by 30...
SaleBestseller No. 15
Scotts Turf Builder Summer Lawn Food, 9.42 lbs.
  • Green grass with up to 50% less water (When used as directed, greening effects last up to 6 weeks, results will vary due to temperature and turfgrass...
  • 2 in 1 Lawn Food and Water Maximizer
  • Powered by Everydrop technology
  • Safe on all grass types
  • Builds strong; deep roots
Bestseller No. 16
The Andersons Green Shocker 7-1-2 Fertilizer with Humic DG 16 lb Bag
  • All quick-release fertilizer, designed to work rapidly and to deliver a quick green up in as little as 72 hours
  • Includes iron and humic acid
  • Extremely small particle size for event coverage
  • Made with The Andersons patented DG Technology
  • Safe for all turf types
SaleBestseller No. 17
Dr. Earth 708P Organic 9 Fruit Tree Fertilizer In Poly Bag, 4-Pound
  • Stimulates healthy root development
  • For healthier fruit
  • Made with 100% organic and natural ingredients
  • Contains no GMOs, chicken manure or sewage sludge
  • Feeds for several months
Bestseller No. 18
Bud Doublin Micros - All Natural Bud Fertilizer with Humic and Fulvic Acid (1 Quart) - Organic...
  • BUD DOUBLIN: GS Plant Foods Bud Doublin will supply everything the plant needs to be healthy and produce a maximized yield. Our bud fertilizer...
  • PACKED WITH MICRO-NUTRIENTS: Our Micro product contains trace elements, micro-nutrients, humic and fulvic substances. Bud Doublin Micro promotes plant...
  • WORKS SYNERGISTICALLY WITH GROW AND BLOOM: GS Plant Foods Bud Doublin Micros bud and bloom fertilizer is among the highest quality products you can...
  • EASY TO APPLY FOR NATURAL GREAT RESULTS: Use GSPlant Foods Bud Doublin Micros is an easy-to-use organic bloom booster. For seedlings, use 1/2 teaspoon...
  • TRUSTED & RELIABLE: At GS Plant Foods, we understand that you are placing your trust in us to provide you with the highest quality products available....
Bestseller No. 19
J R Peters Jacks Classic No.4 10-30-20 Blossom Booster Fertilizer - 51064
  • Free measuring spoon enclosed for easy and precise application
  • Features the highest safety factor to prevent burning when applied as directed
  • Blended with an enhanced micronutrient package which provides optimal nutrition for strong roots and green foliage
  • Feeds through both roots and leaves
SaleBestseller No. 20
Ironite 100519460 1-0-1 Mineral Supplement/Fertilizer, 15 lb (Packaging May Vary)
  • The nation's leading mineral supplement
  • Greening up America's lawns for over 50 years
  • This product is made in United States

Having trouble finding a great double dark fertilizer?

This problem is well understood by us because we have gone through the entire double dark fertilizer research process ourselves, which is why we have put together a comprehensive list of the best double dark fertilizers available in the market today.

After hours of searching and using all the models on the market, we have found the best double dark fertilizer for 2023. See our ranking below!

How Do You Buy The Best Double Dark Fertilizer?

Do you get stressed out thinking about shopping for a great double dark fertilizer? Do doubts keep creeping into your mind?

We understand, because we’ve already gone through the whole process of researching double dark fertilizer, which is why we have assembled a comprehensive list of the greatest double dark fertilizer available in the current market. We’ve also come up with a list of questions that you probably have yourself.

John Harvards has done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for double dark fertilizer that you consider buying. Your questions might include the following:

  • Is it worth buying an double dark fertilizer?
  • What benefits are there with buying an double dark fertilizer?
  • What factors deserve consideration when shopping for an effective double dark fertilizer?
  • Why is it crucial to invest in any double dark fertilizer, much less the best one?
  • Which double dark fertilizer are good in the current market?
  • Where can you find information like this about double dark fertilizer?

We’re convinced that you likely have far more questions than just these regarding double dark fertilizer, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for double dark fertilizer, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible double dark fertilizer. Make sure that you are only using trustworthy and credible websites and sources.

John Harvards provides an double dark fertilizer buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information.

How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available double dark fertilizer currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of double dark fertilizer has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an double dark fertilizer?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your double dark fertilizer.
  5. Customer Ratings: Number ratings grade double dark fertilizer objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their double dark fertilizer.
  7. Product Quality: You don’t always get what you pay for with an double dark fertilizer, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an double dark fertilizer is should be an indication of how long it will work out for you.

John Harvards always remembers that maintaining double dark fertilizer information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding double dark fertilizer is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly!

FAQ:

Q: Where to buy flagship fertilizer?

A: Shop 24-0-6 Flagship Granular Fertilizer with Iron from Yard Mastery featuring 25% slow release nitrogen, 3% iron and 6% potassium. This 45lb bag covers 15,000 square feet and includes micronutrients: boron, copper, iron, manganese, molybdenum and zinc at amazing prices now!

Q: What fertilizer makes grass dark green?

A: – One 45 lb bag covers 15,000 sq. ft. – Analysis is 16-0-0:: N-P-K, plus 6% iron – Contains Urea for a darker green color – Great for greening up the lawn but won’t flush it with too much growth

Q: What is the best fertilizer for green grass?

A: – Nitrogen (N) promotes rapid growth and lush green color. – Phosphorous (P) helps develop healthy root systems. … – Potassium (K) boosts the overall health of your grass and helps with disease resistance, drought protection and cold tolerance.