Best Flower Feed [Review]

For those of you who are new to feeding flowers, you’ll be wondering how to pick the best flower feed for your gardens out of all the options on the garden centre shelf.

It really helps to understand the labels. You’ll find some numbers on any package of plant food you buy (they’ll look like 20-20-20). These numbers are the food’s ratio of nitrogen, phosphorus and potassium, or N-P-K. They refer to the percentage of each nutrient that makes up the product. So, a food with a 20-20-20 ratio will have 20% each of nitrogen, phosphorus and potassium, by weight. The rest will be composed of a carrier medium, as well as other nutrients in smaller amounts.

In flower feeding, bigger numbers aren’t necessarily better. Since the numbers refer to amounts of nutrients that are immediately available, smaller numbers could indicate that the nutrients are in a slow-release form. Organic plant food, for instance, use forms of nutrients that require microorganisms to break them down slowly.

If you want to dig deep into the world of flower feeding, you can research exactly what ingredients are in each product. Most companies make that information available, so you can read up on different products to determine what micronutrients they’re going to provide your flowers with, as well as what the source of each macronutrient is.

You can pair that with some research on the flowers you’re feeding to learn what nutrients they especially need, and when.

In case you don’t want to dig that deeply, though, we’ve rounded up our picks for the best flower feed to help you make a solid choice. Without further ado, here they are.

Best Overall Flower Feed


Miracle-Gro All Purpose Plant Food

A dependable, easy to use all-purpose plant food designed for all kinds of plants at many different growing stages.

Features & Benefits

  • 24-8-16 formula
  • Water soluble granules
  • 3 pound box
  • 1 diluted gallon covers 10 square feet

Pros

  • All-around fertilizer
  • Many different sizes available

Cons

  • Some users found the cost too high

Editorial Review

A quick-acting, balanced flower feed is a staple in greenhouses and garden sheds everywhere. This is an all-purpose plant food that fills that role admirably. It’s a dependable product that’s simple to use and that does the job it needs to.

We liked that it’s not too specialized. It’s convenient to be able to feed everything with the same feed, at the same intervals, and to expect similar great results from its application. For any gardener who wants better results from all types of flowers, this product can help.

What Others Are Saying

Miracle-Gro has a loyal customer base, most of whom were delighted with this product. They reported quick improvement in plants that were failing, and healthier, more vibrant blooms on plants that were flowering. They found it easy to use and highly effective.

A lot of people have used and reviewed this product, so as you might imagine, negative feedback varies widely. The most common complaints were instances of plants being burned, people feeling like the product didn’t do anything and people feeling like the price was too high for what they received. Many people cautioned that this product is not always cheaper on Amazon.

Best Organic Flowering Nutrients


Miracle-Gro Performance Organics Blooms Plant Nutrition

Miracle-Gro’s organic plant feed features a balanced fertilizer and micronutrients that will help build your soil up and keep your plants blooming.

Features & Benefits

  • 8-8-8 formula
  • Water soluble granules
  • 1 pound box
  • Covers up to 265 square feet

Pros

  • Organic Materials Review Institute (OMRI) listed
  • Measuring scoop enclosed

Cons

  • Strong unpleasant smell

Editorial Review

For increased growth and healthier flowers, you can’t go wrong with this flower food. Its balanced formulation is perfect for many different types of flowers, and the micronutrients in the mix help build soil organically.

This might not a feed you want to use on your indoor plants because the smell is strong, but for us, that’s a trade-off for using organic rather than synthetic fertilizers. Make sure to keep this product in a sealed container in a dry location—it will harden up if it’s just left in the box in your shed.

What Others Are Saying

Reviewers say this product has helped their flowers grow bigger, bloom better and last longer. They noticed a marked difference after they had applied it and loved that their plants stayed healthier when climate and soil conditions were less than optimal.

Odour was a big complaint for users, even for those who liked the product. Some people found that the product clumped together after the package had been opened, making it difficult to measure.

Others mentioned that it doesn’t dissolve readily in water. Reviewers who had this issue diluted it in a bit of warm water first before adding it to the watering can.

Best Rose Feed


Down to Earth Organic Rose & Flower Fertilizer Mix

A natural, organic rose food that promotes healthy blooms and lots of growth. This mix will improve your plants and soil in one.

Features & Benefits

  • 4-8-4 formula
  • Soil additive mix
  • 1 or 5 pound box
  • Organic

Pros

  • Organic Materials Review Institute (OMRI) listed
  • Can be used on edible bulbs
  • Compostable box

Cons

  • Users have had issues with the packaging

Editorial Review

For those who want something natural for their roses, this rose fertilizer mix is a solid choice. For top dressing and soil amendments, it offers an organic option that takes the guesswork out of improving your soil. We loved that it’s also designed to help bulbs perform.

The first ingredient here is fish bone meal, so heads up if you find fish smells deeply unpleasant, or if you’re a vegan or vegetarian who prefers not to use animal products. Also be aware that pets might be attracted to it, and that you might have to stop them from digging.

What Others Are Saying

This rose feed has made quite a few fans along its journey. People report that it’s simple to use and that they get spectacular results with it. They praised the value of the feed, saying that the price is right, and that a little goes a long way.

One common complaint was the smell of the product. People advised that it’s very strong, and that the odour lasts for a few days. More than a few users mentioned that their box had come open and with some product missing, so be sure to check the package when it arrives.

Best Orchid Drip Feed


Smereka Magic Grow Orchid Drop Feeders

For those who are away a lot, or who feel a bit lost with orchid care, these easy drip feeders could be the answer you’re looking for.

Features & Benefits

  • Liquid plant feeder
  • Formulated for orchids
  • 25 mL drip feeders
  • 5-pack

Pros

  • Each feeder lasts 2 months
  • Easy to use
  • Slow release

Cons

  • Instructions for cutting the end of the feeder are ambiguous

Editorial Review

Drip feeders for orchids can take a lot of the guesswork out of orchid maintenance. These handy feeders last a long time and are perfect for people who tend to forget about feeding or who go away a lot. The slow-release formula makes sure the orchids are getting what they need, when they need it.

There’s some confusion about the rate of flow for these little feeders. Many reviewers noted that they had issues with the liquid emptying too quickly, but the company notes that that’s normal. The feed is designed to last for 60 days in the growing medium.

What Others Are Saying

The majority of reviews of this product are positive, with users saying they saw quick results, new growth and happier-looking orchids. With orchids being a more difficult flower to grow, people loved having a feed option that made their plants easier to maintain.

A few users said that the drip function didn’t work for them and that the product emptied all the fertilizer at once. Similarly, some other users found the feeders empty within a few days. A few people suggested that the instructions for cutting the tip off of the feeder could have been clearer.

Best Feed for Dahlias


Jack’s Classic Blossom Booster

This bloom booster is designed with higher phosphorus levels to help plants put their best flowers forward. Easy to use on plants just setting buds.

Features & Benefits

  • 10-30-20 formula
  • Water soluble granules
  • Resealable container
  • 1.5 pounds

Pros

  • For indoor and outdoor plants
  • Measuring scoop included

Cons

  • Can be too strong for some plants

Editorial Review

Dahlias need a fertilizer that’s easy on the nitrogen and stronger on the potassium and phosphorus, and this product delivers that ratio. This formula can help your dahlia’s bloom season last longer and can ensure that its flowers are as healthy and gorgeous as they can be.

Experienced gardeners recommend doing a soil test before applying a bloom booster to see if your soil needs the extra phosphorus kick. If it does, this feed is a great, easy to use fix. Applied when the buds are beginning to set, the blossom booster can help your dahlia flower at its best.

What Others Are Saying

Growers of all kinds have found success with this feed. They state it’s made a difference on everything from bell peppers to cannabis. Dahlia growers, of course, noted the many compliments their blooms received after they started using this feed. Most folks felt it was a good value, and they appreciated buying from a brand they trusted.

Some users, however, found this feed stressed or burned their plants. Others recommended using at half-strength, and still others found that the product didn’t make a difference in their plants. Cost was sometimes a complaint with this feed, too, with a few people feeling that it wasn’t worth the price tag.

Best Petunia Feed


Jack’s Classic 20-6-22 Petunia FeED

Water soluble and easy to use, this petunia feed contains higher amounts of iron to help plants that struggle with uptake.

Features & Benefits

  • 20-6-22 formula
  • Water soluble granules
  • Resealable tub
  • 4 pounds

Pros

  • Encourages compact growth
  • Higher iron content
  • Good for gardeners with hard water

Cons

  • Not recommended for iron-sensitive plants

Editorial Review

The is the best Jack’s Petunia Feed on offer. This food is designed for plants with higher iron needs, which makes it perfect for petunias. It contains less phosphorus, so it encourages compact growth rather than leggyness; a fantastic feature for those of us who find their petunias getting spindly in the summer heat.

The downside to this is that it’s a bit of a specific product. They don’t recommend this for geraniums or other flowers that are sensitive to iron. If you have petunias and geraniums together, for example, this plant feed will work against your geraniums, so be mindful of what’s in your planters.

What Others Are Saying

This is a hugely popular bloom feed for petunias. Long-time petunia growers who purchase it swear by it, and new customers often report that they tried it on the recommendation of the nursery or greenhouse where they purchased their plants.

Users report that this petunia feed helps their plants thrive in challenging soil conditions and bloom for extended periods. People felt their plants were healthier and better able to withstand bad weather events, in addition to growing lusher and more full. Used regularly or as a pick me up, growers found this product had an immediate positive impact. It’s actually hard to find anyone with bad things to say about this product.


Bottom Line


Jack’s Classic 20-6-22 Petunia FeED

Our top pick for the best flower feed is Jack’s Classic 20-6-22 Petunia FeED. It’s a bit more specialized than some of the other options here, so it’s not for use on every flower. Given how ubiquitous petunias are, though, and given how much people love them, we feel it’s a safe bet that many of our readers will find themselves in need of a quality petunia feed sooner rather than later.

It’s high quality, reliable and extremely popular, and that earned it top marks in our books. 

Feature image: Pixabay

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