The 10 Best Bloom Boosters

Updated March 24, 2018 by Ezra Glenn

10 Best Bloom Boosters
Best High-End
Best Mid-Range
Best Inexpensive
We spent 44 hours on research, videography, and editing, to review the top choices for this wiki. Whether you're cultivating flowering or fruiting plants, any one of these bloom boosters will give them the added nutrients they need to realize their full potential year after year. Packed with essential minerals, they are formulated to increase harvest size, encourage healthy root development, and even sweeten fruits. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best bloom booster on Amazon.

10. General Hydroponics Liquid Kool

General Hydroponics Liquid Kool keeps your flowering plants robust, healthy, and producing beautiful blossoms year after year. In addition to increasing flower size, it helps to sweeten fruits, so it's a great choice for edible gardens as well.
  • boosts production of essential oils
  • helps kick off new production cycles
  • overdosing will burn roots
Brand General Hydroponics
Model GL56732537
Weight 2.7 pounds
Rating 4.1 / 5.0

9. Miracle-Gro Flower Food

Coming from one of the best known names in home gardening, Miracle-Gro Flower Food is designed to be absorbed through both roots and leaves. Its formula breaks down quickly, so plants start absorbing nutrients almost immediately after feeding.
  • good for use every 7 to 14 days
  • won't burn when used as directed
  • may leave excess chemicals in soil
Brand Miracle-Gro
Model 146002
Weight 4.1 pounds
Rating 3.5 / 5.0

8. Advanced Nutrients Big Bud

A jar of Advanced Nutrients Big Bud liquid fertilizer will help you produce huge, beautiful flowers and tasty edibles. It generates excellent density, allowing you to get a higher yield from smaller gardens without having to expand.
  • enhances terpenoid production
  • works for hydroponics and soil
  • runoff can impact groundwater
Brand Advanced Nutrients
Model 5050-14
Weight 2.5 pounds
Rating 3.5 / 5.0

7. Jack's Classic No. 4

Though it claims to be good for indoor plants as well, JR Peters Jack's Classic No. 4 is best suited for your outdoor garden. If you aren't very experienced with manipulating blossoms, this is a good choice, as it rarely burns roots or leaves.
  • includes a measuring spoon
  • slow-release formula works over time
  • not all users see an improvement
Brand JR Peters
Model 51064
Weight 4.6 pounds
Rating 4.3 / 5.0

6. Herculean Harvest

Available in bulk quantities, Nectar For The Gods Herculean Harvest is not only a great choice for floral enhancement, but also a great deal. It can be used on any kind of blossoming or fruiting plant and will increase their access to the nutrients in your soil.
  • made of liquefied bone meal
  • improves calcium absorption
  • clumps up when exposed to heat
Brand Nectar for the Gods
Model 746240
Weight 2.1 pounds
Rating 3.9 / 5.0

5. Fox Farm FX14049 Trio

The 1-2-3 punch of Fox Farm FX14049 Trio helps your plants throughout their entire growth cycle. It includes one formula that's specially designed to increase vegetative growth, one for use during flowering to increase production, and an all-purpose fertilizer.
  • helps heal damaged root systems
  • for mature or late-season plants
  • not intended for hydroponic use
Brand Fox Farm
Model FX14049
Weight 8.2 pounds
Rating 4.2 / 5.0

4. Advanced Nutrients Bud Candy

Advanced Nutrients Bud Candy not only helps increase your flower population, but it also bolsters blossom size and infuses them with brighter colors, stronger aromas, and more essential oils. When used as directed, it should improve your plants' immune systems as well.
  • available in a variety of sizes
  • contains water soluble magnesium
  • helps boost resin production
Brand Advanced Nutrients
Model 2320-15
Weight 9.7 pounds
Rating 4.8 / 5.0

3. Growth Science Nutrients Rock Solid

Growth Science Nutrients Rock Solid is designed to help you maximize yields. It contains many additives that have been scientifically proven to help plants in their flowering phase, so you can rest assured you won't be missing any vital nutrients or minerals.
  • effects are noticeable within days
  • enhances co2 uptake
  • manufactured in california
Brand Growth Science Nutrient
Model pending
Weight 2.4 pounds
Rating 4.5 / 5.0

2. Dr. Earth 101 Flower Girl

Dr. Earth 101 Flower Girl is 100% organic and contains no GMOs. It's safe for both people and pets, so you can spread it liberally, even in areas where your children play, and one 12 lb. bag should be enough to feed a large garden for several months.
  • enriched with alaskan fish bone meal
  • assists with drought tolerance
  • safe to store outdoors
Brand Dr. Earth
Model 101
Weight 12.2 pounds
Rating 4.7 / 5.0

1. Element Flower Fuel

Element Flower Fuel is an extremely potent blend of over 40 ingredients that's sure to help you grow massive, vibrant flowers and increase the size of your harvest. It's a great choice whether you're using a hydroponic or aeroponic system, or growing in plain-old soil.
  • fully water soluble
  • includes a double-sided dosing scoop
  • for professionals and novices alike
Brand Element
Model pending
Weight 15.5 ounces
Rating 5.0 / 5.0

Growing Your Best Garden Ever

Gardening can be both a challenging and rewarding activity, with the sensation of the latter often predicated by the level of challenge faced. From growing the simplest bed of wildflowers in the spring to cultivating a perfect rose bush over the course of many years, the process of raising a garden can be as involved as you would like. The satisfaction you reap from looking out over your robust, colorful garden can do wonders for your mental and emotional health; multiple studies have conclusively linked regular gardening with an overall happier disposition and positive attitude.

Gardening, which according to the Centers for Disease Control and Prevention counts as a moderate-intensity level activity, can also do wonders for your physical health. As little as two and a half hours spent gardening each week can contribute to reduced blood pressure, lower obesity risk, diminished osteoporosis issues, and many other benefits as well.

And then of course there are the many positives associated with raising an edible garden. Growing your own fruits and vegetables takes a good deal of initial effort and regular maintenance to help ensure you achieve a decent harvest, but it can save you a considerable amount of cash in the long run. For the same price as a single trip through the produce aisle, you can raise several plants that will bear plentiful fruit; your costs will be a fraction of retail prices if you grow your foods all the way from seeds. And there's no comparison between the taste of the foods you lovingly raise yourself and the produce found in the grocery store, which is often bland, flavorless, and ripened using ethylene gas.

As much as gardening can help you, of course it's up to you to help your garden. Establishing a healthy, resilient garden means carefully selecting the right soil for your beds or planters or selecting the right plants for the soil of the ground at your property. It means ensuring your plants get sufficient sunlight, it means establishing an idea watering cycle, and it means providing any physical support a plant (such as a tomato or pea plant) might need.

When it comes time for the flowers to bloom or when the harvest looms near, making your garden look its best and produce its largest, tastiest foods, it means using a great bloom booster, too.

Bloom Boosters For Flowering Plants

During a plant's growth cycle, most of the fertilizers that are recommended for ideal foliage -- including robust stems and stalks and large, lush leaves suited for proper photosynthesis -- are rich in nitrogen. A good bloom booster, on the other hand, is packed with phosphorous, the single best nutrient for encouraging a plant to produce large, vibrant flowers. Phosphorous helps with everything from water movement throughout a plant to effective chlorophyll production.

The best time to apply a bloom booster to a flowering plant is right as its flower buds begin to form. Remember, these boosters won't necessarily encourage more flowers to grow, but they will help those blossoms the plant has already begun to produce to grow into large, healthy blooms that look great and last well.

When picking the right bloom booster for your flowering plants, first decide if you want an organic option or if you're alright with a bit of assistance from science. Then consider concentration levels. For some plants, such as those in planters as opposed to those in the ground, certain bloom boosters might be too potent. Don't burn a plant you're trying to help by exposing it to too much phosphorous.

And always remember to stop applying a bloom booster to any perennial plant as the weather starts to turn colder. These plants need to spend a portion of the year in a relatively dormant state, so too much bloom booster can actually be a bad thing in terms of a plant's long term health. For this reason, certain slow release, long lasting bloom boosters may actually be a poor choice. Consider how for long a given booster will feed a plant before choosing it.

Bloom Boosters For Enhanced Food Production

Whether you are growing tomatoes, peppers, watermelons, or many other types of food, a bloom booster can help your food plants grow faster and to produce larger, tastier fruits and vegetables that still cost much less than you would pay at a grocery store.

Before we discuss which bloom boosters to choose for an edible garden, note that special care should be taken for helping root vegetables grow. Many bloom boosters will direct growth toward the leaves and stems of such plants instead of down into the roots you're hoping to harvest and enjoy.

For a leafy plant, such as kale or lettuce, look for a variety richer in nitrogen than phosphorous. Nitrogen will encourage those edible leaves to grow quickly without losing their flavor profile or nutrient content. For fruiting plants, you can begin with a nitrogen rich formula, but you should switch to a phosphorus rich bloom booster once the first buds start to appear.

It's always advisable to use an organic bloom boosting formula with a plant you will be eating, though many non-organic options are considered safe, so weigh the importance of organic food versus budget issues and make your own decision. And with most food plants, you don't need to worry as much about over use of a bloom booster, as almost all food plants die out at the end of their harvest cycle anyway.

Statistics and Editorial Log

Paid Placements

Recent Update Frequency

help support our research

patreon logoezvid wiki logo small

Last updated on March 24, 2018 by Ezra Glenn

Ezra is a writer, photographer, creative producer, designer, and record label-operator from New York City. He's traveled around the world and ended up back where he started, though he's constantly threatening to leave again.

Thanks for reading the fine print. About the Wiki: We don't accept sponsorships, free goods, samples, promotional products, or other benefits from any of the product brands featured on this page, except in cases where those brands are manufactured by the retailer to which we are linking. For our full ranking methodology, please read about us, linked below. The Wiki is a participant in associate programs from Amazon, Walmart, Ebay, Target, and others, and may earn advertising fees when you use our links to these websites. These fees will not increase your purchase price, which will be the same as any direct visitor to the merchant’s website. If you believe that your product should be included in this review, you may contact us, but we cannot guarantee a response, even if you send us flowers.