Best Fertilizer for Peonies Reviews with When & How to Apply It

If you are thinking about applying the best fertilizer for peonies to grow them indoor or outdoor, the most effective options are low nitrogen bulb and perennial fertilizer. However, soil quality, pH level, plant condition, and the session can be is a big factor. 

Here, in this article, I have tried to review the best fertilizers for growing different peonies varieties and time. Plus provide a complete guide to the fertilizer application process answering when, where, and how. Let’s start…

What is the Best Fertilizer for Peonies?

When you are growing peony applying the correct nutrition is essentials. This flower plants moistly need Phosphorus and nitrogen. However, too much nitrogen will influence unnecessary growth and demote the strength of the stems.  Besides, It will decrease the bloom. For that, it will attract insects and diseases more often.


Tree peonies need a warm, dry summer season for optimal growth and can be grafted onto the roots of herbaceous peonies in late summer or fall.

Horticultural varieties of the Chinese species P. suffruticosa have been developed. A variety of hybrids developed by crossing P. suffruticosa with Chinese yellow P. delayavi has single and double flowers, which are sometimes red.

Better fertilization and care can increase flower production in your garden. Peonies need fertilizers for better growth.

  • For General Gardeners- Slow-release low-nitrogen bulb or perennial flower fertilizers is the better option.
  • When planting Peonies- the hole should be filled will 1:1:1 organic fertilizers ( 1/2 cup) with superphosphate or bone meal (1/2 cup).
  • Routine Fertilization- You nd to choose an NPK fertilizer of 1:2:2 ratio. (i.e: 5-10-10, 10-20-20 so on). You can also use 10-30-20, 5-0-.5, or bloom boosters.
  • Fertilizing Peonies in Containers – for growing them in a pot or bag the balanced, slow-release fertilizers are mostly recommended. You can use a fertilizer of NPK10-10-10.

Today, many gardeners using for the Miracle-Gro for peonies. In this context, we will discuss some fertilizers that will improve your peony pond.

10 Best Fertilizer for Peonies Review

Some of the most sophisticated fertilizers for garden peonies are:

  1. Lilly Miller Fertilizer 5-10-10, Best Fertilizer For Tree Peonies

Best Fertilizer For Tree Peonies

From the first saffron to the mesmerizing gladioli and bright colors of summer anemones, your Peonies need a special combination of fertilizers to produce beautiful colors and abundant flowers. Lilly Miller Bulb & Bloom Food makes it easy to supply food to the bulbs.

Lilly Miller( 4-10-10 )Bulb is a generic peony food with an increased ability to promote high fertility due to the presence of potassium (K), which is an important requirement in the growth phase of peonies. The potassium rolls in this all-purpose peony food are said to flourish early.

The availability of high-quality probiotics in this tree peony fertilizer ensures that it is also beneficial for other soil microbes. It combines with natural ingredients and traditional plant foods to get a unique blend of fertilizers that starts working fast and feeds onions for up to 4 weeks.

Before adding flowering fertilizer to the peony soil, work the soil to make sure the Lilly Miller Bulb fertilizer is well mixed. Working effectively in the soil also ensures the availability of phosphorus in these peony flower foods and ensures that your peonies bloom for a great bloom. Furthermore, the available phosphorus (P) plays an important role in making peonies stronger and more consolidated.

  1. Humboldts Secret Flower Stacker – Nutrient System for Excellent Flowering and Growth

Nutrient System for Excellent Flowering and Growth for Peonies

The main ingredients in this peony fertilizer are Vitamin B1, which ensures that peonies recover quickly after transplanting, as Vitamin B1 promotes rapid root formation. The availability of organic food supplements in this Humboldt has allowed researchers to consider it the best organic fertilizer for peonies.

If you are also looking for a high-quality organic fertilizer for your indoor potted peonies, Humboldts Secret Flower Stacker is always the perfect choice for you as it promotes an effective root mechanism in all pot plants. A high phosphorus content in this peony fertilizer guarantees strong root growth. This fertilizer also provides lush green peony leaves as the nitrogen present is sufficient to produce very lush green foliage.

Flowering drivers are especially important in hydroponics and agriculture. Thousands of growers use the flower stacker as an additional flower to maximize crops with the power of our formula. Humboldt’s Secret Flower Stacker is made from high-quality ingredients to stimulate and ensure flower development while enhancing natural flavor, fragrance, and other desirable properties. Perfect for indoor plant flooring.

The flower stacker is a flowering additive to increase the yield and density of flowers. Our exact formula has been shown to have a significant impact on earnings results of up to 30%. It is an ideal nutritional solution for indoor and outdoor plant soil.

  1. Miracle-Gro Shake ‘N Feeds, General Purpose Food, 8 lbs

Miracle-Gro® Shake ‘n Feed® Multipurpose Plant Feed was specially developed to grow stronger, more vibrant, and productive plants. Full of essential nutrients that help nourish and nourish above and below the ground.

Microbes break down natural ingredients into nutrients that support root strength and development and increase water efficiency. You can use Miracle-Gro® Shake ‘n Feed® Universal Plant Food anywhere – on the ground and in food containers for up to 3 months.

This fertilizer is packed with essential nutrients that help feed and nourish above and below the ground. It also contains essential micronutrients to grow stronger, more vibrant, and more productive plants than unfilled plants.

The manufacturer does not guarantee combustion or system malfunction if used under the instructions. It can be used both on the ground and in containers.

  1. Jobe’s Organics 09686 – Best Slow Release Annual and Perennial Plant Foods

Jobe's Organics 09686 Slow Release Annual and Perennial Plant Foods

This particular product is imported primarily from the United States. Thanks to the good product quality and the balanced distribution of some important nutrients, this fertilizer is one of the most effective fertilizers for peonies.

It helps the plant increase its mass of roots and foliage, which eventually strengthens the base of the plant and helps the plant to keep more water in the reserve. As root growth continues, the plant also begins to absorb nutrients from different parts of the soil and save money when there is a shortage.

The fertilizer is said to improve soil conditions, stimulate growth, and increase disease resistance among species. Jobe slow-release plant food feeds plants throughout the season.

Jobe Organics 09686 annuals are natural and organic. Does not contain harmful chemicals that can burn the plant. Due to the guarantee of natural and ecological safety, OMRI put this on the organic horticulture list.

  1. Advanced Nutrients 5450-16 Voodoo Juice Fertilizer, 10 Liter

Advanced Nutrients 5450-16 Voodoo Juice Fertilizer, 10 Liter

Voodoo Juice is an exclusive and proprietary blend of eight super microbial strains that pump your roots and root zone for faster growth, healthier plants, and more valuable yields. It is an easy to use product, developed by a team of graduate students who developed these great varieties specifically for the plants you grow and the gardens where you grow them.

This highly concentrated liquid formula keeps microbes dormant until they are added to your nutrient tank. There they come alive and stimulate their roots and root areas. At the same time, substances are created that increase flower production and growth. Flower power.

This special fertilizer also ensures the growth of the root in mass and density. It increases the absorption of food and nutrition of the plant, allowing it to grow faster and also produce a large number of flowers.

Bud development is also enhanced with this voodoo fertilizer and gradually increases peonies. This voodoo juice is rich in potassium and phosphorus and one of the most effective fertilizers for peonies.

  1. J R Peters Inc 51024 Classic Fertilizer Jacks No. 1.5 10-30-20 Flower Booster

J R Peters Inc 51024 Classic Fertilizer Jacks No. 1.5 10-30-20 Flower Booster

Blossom Booster 10-30-20 is a professional formula designed to produce more flowers and lighter colors on all indoor and outdoor plants. Nourish roots and leaves. This is the original Blossom booster with a proven nutritional ratio of 1: 3: 2 – quality is unmatched in the home garden market. Recognized by many professional growers as a tool to fill a successful container. This formula offers excellent results at home.

Apply every 7-14 days for best results, similar to a full watering. Use this high phosphorus formulation when budding to increase the number and size of flowers. To be used with all indoor and outdoor plants, such as geraniums, impatience, begonias, and marigolds. Ideal for fruits and vegetables. It can also be used as a transplant solution.

  1. Mission Fertilizer Bloom Organic Soil nutrients (Granular, 24lb)

Mission Fertilizer Bloom Organic Soil nutrients (Granular, 24lb)

Mission Fertilizer BLOOM Aggregate is Certified (CDFA). Use in the garden does not harm the natural environment, but shows productive results and better condition of your garden.

BLOOM Granular is the second phase of our dry products (GROW Granular) and provides the essential N-P-K and calcium necessary for the entire flowering period. It also helps to enlarge the flowers.

This product is easy to use. At the first sign of a flower, a dress, or a change in the topsoil. Apply 1 ounce of BLOOM granules per gallon of soil. Use fertilizer for the first time when your flowers grow on your peonies. To provide your peony with all the necessary nutrients, you need to treat the top layer of the soil.

For your peonies to fully bloom, this Mission Bloom fertilizer contains a high-quality amount of calcium, leading to growth disorders in young peonies, leaves, and even root tips. Being organic means that Mission Bloom fertilizer effectively supplies your plants with nitrogen to promote vegetative growth. The whole phosphorus favors the formation of large flowers and, finally, potassium allows peonies to effectively absorb water and other mineral elements from the soil.

  1. Scott’s Super Bloom Water Soluble Plant Foods

Best Fertilizer for Peonies

Help plants flourish with Scott’s Super Bloom water-soluble fertilizer. This water-soluble plant food nourishes plants instantly and is safe: does not burn plants when used as directed. Use it for flowers, fruit bowls, containers, and outdoor bedding plants. It contains a lot of phosphorous for the plants to flourish. Feed every 1-2 weeks for the best results.

Phosphorus is important for flowering. This fertilizer contains a lot of phosphorus so that the plants can flourish in a short time. If you feed your plants every 1-2 weeks, you will get the best results.

Another extraordinary property of the fertilizer is that it is a water-soluble nutrient for the plants that feed them directly. Nutrients are served immediately, accelerating growth and flowering.

Also useful for outdoor flowers, potted fruit trees, and flower beds. Do not burn your plants if they are used as intended. The 12-55-6 fertilizer test provides rich nutrients and the 0.10% iron chelate content facilitates plant growth.

  1. Nutrients start R 10 liters

Nutrients start R 10 liters Liquid

If you are looking for quality options that can help your peonies take better root in the pot, try these nutritious plants.

Start-R 5-0-0.5 is a complex biostimulant food additive to be used during planting, growth, and early flowering of our plants. Start-R contains a highly available form of nitrogen and a unique combination of biostimulants that act as root stimulators while promoting the vitality of plants and abundant branches.

Start-R is immediately absorbed by the plant and is perfect for the correct development of seedlings, root seedlings, young plants, and for use during transplanting.

For new owners who have just transplanted their peonies, Mills Nutrients remains a perfect choice for you right now. For amazing results, use only 4 ml per 1 liter of pure water. Use fertilizer at the beginning of the flowering period of the peony.

  1. Espoma BT4 4-Pound Bulb-tone 3-5-3 Plant Food

Espoma BT4 4-Pound Bulb-tone 3-5-3 Plant Food

 Espoma Bulb-Tone Plant Food is a complex blend of 100% natural and organic ingredients that offers a complete and balanced diet to meet the specific nutritional needs of onions and tubers.

Onion clay is rich in bone meal and is enriched with useful organic clay microbes that biologically stimulate natural plant foods to ensure excellent plant growth. This organic food is slowly declining due to a regular and uniform diet. The product is certified as safe for people, pets, and the environment. It does not burn or sink.

This fertilizer is a complete fertilizer with 15 essential nutrients for plants. The complex mix of natural organic substances also guarantees a complete and balanced supply of 15 nutrients, ecological and safe.

The bulb-shaped espo plant food weighs 4 pounds and comes in an easy-to-close bag. 1 pound is about 3 cups. This plant food is highly recommended for all peonies onions, such as turmeric, narcissus, hyacinth, and tulip.

What to Look for When Choosing a Peony Fertilizer?

Peonies grow well when planted and fertilized. Fertilization can play the most important role in the growth of a successful peony garden. Therefore, the selection of fertilizers must be precise. Here are some important facts to remember when buying peony fertilizers:

  • The Fertilizer Must be Suitable for the Long-term Usage

If the fertilizer you are looking for is for growing peonies in containers, use slow-release fertilizers as they release nutrients as the plants grow. Due to their deep roots, peonies consider the pots to be deeper than their plant pots.

Since they still eat a lot of food, consider providing plenty of nitrogen-abundant water, 5-10-10. This should be done in the spring. The reason low nitrogen fertilizers are needed is that you can enjoy early flowering varieties on all peonies.

  • It Should Contain a Small Amount of Nitrogen.

The main reason why you should consider a low nitrogen fertilizer is that your peonies prevent vegetative growth and promote flowering. In this case, the plant grows but produces fewer flowers than pruning.

Nitrogen promotes the growth of all living plants. In addition to promoting the desired growth of plants, it also encourages the growth of unwanted plants around you. When low nitrogen fertilizers are used, there is a risk of unwanted plants and the desired plant absorbs the necessary amount of nutrients.

Another important reason is that the plant is burning. If the plant receives excess nitrogen, there is a high probability that it will burn. This can lead to the death of the plant.

  • Soil Category and Conditions

When choosing a fertilizer, consider the type of soil in which peonies grow. Different types of soil require different amounts of fertilizer, but also for the released capacity or the pH value. If your peonies are in clay soil, use a slow-release fertilizer to prevent nutrients from falling out. On the other hand, if you are using a low pH breakdown, choose a fertilizer that matches the low pH of your peonies this season.

Fertilization Guide – Process for Applying Food for Better Growth and Bloom

  1. It is necessary to put compost or other organic material at the bottom of the peony planting hole. Mixing with up to 1/2 cup of 10-10-10 fertilizer along with 1/2 cup of bone meal or superphosphate also sets the stage for the healthy growth of the peony.
  2. Phosphorus and nitrogen are important nutrients for a peony throughout its life. You need to provide the correct values ​​every year for your plants to grow as they should and produce vibrant flowers. Apply a low nitrogen fertilizer, for example, a 5-10-10 mixture, to the soil around the stem of the peony.
  3. It is important to use a low nitrogen fertilizer for peonies, as a high nitrogen fertilizer can affect the growth of plants. Make sure you don’t over-fertilize. Always add fertilizer around the plant’s drip line, as adding it directly to the fertilizer crown can burn the plant.
  4.  A 2-3 cm thick layer of organic compost, applied as a cover around the base of the peony, helps maintain moisture and control weeds. The bacteria in the compost break down the organic matter into nutrients necessary for the optimal growth of the plant. When plants begin to grow, it is usually sufficient to use an organic fertilizer, such as 1-1-1, once a year to promote plant growth.
  5. If you plant peonies in 10 to 10 to 10 pots (half a cup) + half a cup of bone meal or superphosphate and mix with organic compost.

When to Fertilize Peonies?

It is better to fertilize or feed your peonies only twice per growing season. The first time you use a fertilizer of your choice, the plant begins to grow and the flowers are the size of beans.

Apply fertilizer to peonies in the spring, when the stems are about 30 cm tall. At this point, the leaves begin to relax. Cold nights must be very rare.

Another telltale sign that it’s time to fertilize peonies is that the first flower buds appear. These little flower buds become visible when the stems begin to grow. In the image above, you can see an example of what flower buttons look like for children. Time to feed the peony plants!

Frequent questions

Why are my peonies so small?

Small young shoots are common in young and recently planted peonies. If the problem persists in the soil after more than three years, the two main suspects are lack of sun and / or food. Adding the sun is seldom a garden option, but cutting off some overhanging branches that shade plants this winter can improve your chances of seeing large flowers in late spring.

Why did my peonies dry up?

A common problem with peonies is the inability to open buds in the spring. As a general rule, flower buds grow to the size of a pea and then stop growing. There are several possible causes. In a narrower interpretation, the gem explosion includes only ecological and cultural issues. Generally speaking, the upper burst includes fungal diseases that affect flower buds.

Is bone meal good for peonies?

If you don’t know bone meal, it is a mixture of finely ground animal bones and other animal waste. This product generally comes from butchers.

Bone meal is used as a fertilizer for most plants because it slowly releases the necessary phosphorus ingredient. Plants also have their necessary proteins for their growth.

Bone meal can be used as a fertilizer for peonies, as it contains a balanced amount of the nitrogen, phosphorous, and potassium they need.

Are coffee beans good for peonies?

There is a lot of debate about whether the coffee powder is a reliable natural fertilizer for plants. When it comes to peonies, it’s best not to spill the ground coffee powder around the peonies and other perennial flowers. The reason for this is that coffee beans are very acidic and should only be used for plants that thrive on acidic fertilizers such as azaleas, rhododendrons, daffodils, and more.

Do peonies bloom more than once?

Peonies bloom once in each ear at a certain time of the year and most of the time in the weather. Many of us have blooming peonies in May and June. Some people who live in warmer climates will have flowers in April, and those in (very) cold climates will have flowers in July. Of course, you can also grow very early varieties to get peonies first or use a refrigerator to store flowers for later use. But few of us saw them bloom in the garden two months after the normal season.

What do you do if the peonies don’t bloom?

Flowering failure is generally caused by two things: poor planting and / or insufficient light. When planting peonies, make sure that the eyes (the place where the new growth forms) are no larger than 5 cm. Also make sure your plants receive enough sunlight, 6 hours or more a day. If planted in a shady spot, they will not flower well, if any.

Also note that newly planted peonies don’t usually flower in the first year, which is spent developing good root and foliage systems. In the second spring after planting, you will see its first flowers.

Chicken manure good for peonies?

Give your peonies a little chicken fertilizer in the spring and fall, so they bloom beautifully. Bird fertilizers are one of the most widely used non-chemical fertilizers on the market.

Poultry manure is a useful source of nitrogen, the main nutrient that plants need to grow green leaves. It also contains small amounts of other important nutrients.

However, poultry manure is low in nutrients compared to synthetic fertilizers such as growth, as shown below, and releases the nutrient content more slowly, some of which are not available in the soil. in late spring and summer, even if the product is applied in late winter or early spring.

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