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10 Best Fertilizer For Magnolia Trees: 2022 Guide

The best fertilizer for magnolia trees helps your tree grow beautiful flowers, prepare for a change in weather, recover from diseases, or fight off pest infestation. Magnolia trees aren’t overly complicated to grow, but the amount of fertilizers available makes it difficult to choose the correct one.

When looking for the best fertilizers for magnolia trees, you want to choose a fertilizer with the right NPK ratio. Magnolia trees like nitrogen, so a high nitrogen fertilizer blend works best. This allows your tree to receive the proper amount of nitrogen, and a good ratio of other nutrients.

In the guide below, I’ll cover ten of the best fertilizers for magnolia trees to help keep your tree beautiful, strong, and healthy.

Best Fertilizer for Magnolia Trees

TreeHelp Premium Fertilizer for Magnolia Trees

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This TreeHelp Premium fertilizer for magnolia trees is formulated especially for magnolia trees. It can provide good support for root development as well as protecting the tree from disease. Because of its slow release of Nitrogen, it will continue feeding during the growing season. You can apply the fertilizer to newly planted trees or big trees.

It can promote overall tree health because this fertilizer contains a mix of macro-nutrients and micro-nutrients. The reason for the slow release of Nitrogen is to stimulate strong new growth and elongate cell walls. The process can avoid the spread of vascular wilt diseases throughout a tree. It can also avoid making the tree more attractive to insect pests and more susceptible to wind or cold damage.

Shake ‘N Feed Flowering Trees and Shrubs Plant Food

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This Magnolia tree fertilizer is a mixture of fermented blend of over 60 natural ingredients. Those ingredients create a special nutrient cluster. This nutrient will let the Magnolia tree more easily absorb the vital nutrients needed to be disease-free, strong and healthy. The process can be seen as a similar process when a tree feeds on the nutrients from composted leaves found on the forest floor.

When you apply this fertilizer you are not only growing a tree but its more than that. You are feeding tree with all the nutrition they need, for the purpose of having a healthy root on up. Tests showed that 24 hours after an application of this fertilizer, beneficial bacteria increased by 70 percent in the soil. 7 days later, the increase in beneficial bacteria reaches 400 percent.

The beneficial bacteria set the stage for solid trees in the soil. With the result of beautiful color that yield increased amounts of fruit. If you choose traditional fertilizers, the main purpose of the fertilizer is to have quick growth. This means you force to feed a tree by applying high doses of water-soluble fertilizer.

The result would be a 10-foot tall rose bush. In the end, the result may not be a good quality of roses that you want. This fertilizer‘s purpose is to feed the tree with the proper nutrient clusters they need to heal themselves and strengthen their immune system. This fertilizer for magnolia trees provides extraordinary results.

Scotts Evergreen Flowering Tree & Shrub Continuous Release Plant Food

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This Scott’s plant fertilizer for magnolia trees is formulated for all kinds of shrubs and trees like Magnolia trees, as well as acid-loving plants including azaleas, camellias, rhododendrons, holly, oak, dogwood, etc. This product can feed for 2 months and you can apply every 2 months during the growing season. This routine will encourage stronger root systems and deep green color.

You can sprinkle this product evenly onto soil surface. Rake into the top 1-3 inches of trees and shrubs for the best results. It contains slow-release Nitrogen for 2 months long feed to trees and shrubs. The package of the product can cover about 165 square feet of lawn or garden. After the application you must water the trees or shrubs to begin the feeding process immediately.

BioAdvance Advanced 12 Months Tree and Shrub Protect and Feed

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This Bayer BioAdvance product is a combination of protecting and feeding trees and shrubs. When applied, the Bayer Bioadvance fertilizer and insecticide dissolved in water move down through the soil and is absorbed by the roots. After being absorbed, it moves up through the shrubs or tree that can support 12 months of many kinds of insect protection and feeds.

You can apply this Bayer Bioadvance product for new growth, or with feature of protecting and feeding trees and shrubs. For the best and complete result, the Bayer Bioadvance fertilizer and insecticide must be distributed completely through the shrub or tree. The process can take from one week to three months depending on the condition of the trees or shrubs.

You need not worry about the water or rain that can wash this Bayer Bioadvance product. You must measure the required product into sufficient water to get the potting soil completely wet. Make sure you do not water too heavily from day 1 to day 10.

This Bayer Bioadvance product can protect trees and shrub from Adelgids, Aphids, Armored Scales (suppression) Borers, Roundheaded (including Eucalyptus Longhorned Borers and Asian Longhorned Beetle), Flathead (including Bronze Birch, Alder, and Emerald Ash Borers), Pine Bark Beetles (including Ips beetles) (suppression), Fungus, Gnat, Larvae, Japanese Beetles, Adult Lace bugs, Leaf Beetles (including Elm Leaf, Viburnum Leaf, and Lily Leaf Beetles), Leafhoppers (including Glassy-winged Sharpshooter), Leafminers (including Birch and Boxwood Leafminers), Mealybugs, Pine Tip, Moth, Larvae Psyllids, Royal Palm Bugs, Root Weevil Larvae (including black vine weevils) all year long.

Jobe’s Tree & Shrub Magnolia Tree Fertilizer Spikes

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This Jobe’s fertilizer for magnolia trees is very popular and loved by many people. The reason for being popular is that it feeds the trees consistently, and deter underground varmints from attacking the roots. Many people purchase this product to do all in-ground culture and landscape. This fertilizer is designed to absorb moisture.

These fertilizer spikes nourishes at the roots. It is considered a slow-release fertilizer for all shrubs, Magnolia trees, and other trees. You do not have to worry about any runoff or mess or hazard or smell when applying this product as it is so easy to use.

You can immediately start applying in early spring and late fall. It will do a continuous supply of nutrients below the surface of the tree down to where the active roots of shrubs and trees are growing. The slow-release formula feeds all season.

VPG Inc 20 Lbs Magnolia Tree And Shrub Food

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The VPG fertilizer for magnolia trees is designed to penetrate the soil directly to the feeder roots of shrubs and trees. This allows you to fertilize without digging any holes. You can apply this product to Magnolia as well as for all types of shrubs and all types of trees including nut trees, Evergreens, shade trees, citrus, tropical, and flowering trees.

You can feed this to your Magnolia tree twice a year. For best results, apply the fertilization process of your trees and shrubs once in early spring and apply once more in early summer. You have to avoid heavy feeding because it will provide late growth which results in winter damage.

Ross Magnolia Tree And Shrub Fertilizer Root Feeder Refills

This Ross fertilizer for magnolia trees is a product is formulated for feeding shrubs and trees to make sure that you will have healthy shrubs and trees all season long. It contains high levels of nitrogen, and is an easy application of feeding trees and shrubs without making a mess.

With a high level of Nitrogen, help trees and shrubs foliage grow healthy, strong and robust leaves. Nitrogen is very critical in the beginning stage of trees and shrubs. The Phosphorous component helps plants to have strong root systems, solid vibrant blooms, and also helps develop cell division and develop plant tissue. Other than that, phosphorus speeds maturity and overall development of trees and shrubs.

It also includes another important component, potassium, that can help producing robust blooms, overall shrubs and trees health, helping water movement, producing better fruits. It is also a very important part in nutrient respiration, nutrient transpiration, nutrient absorption, and enzyme activity.

Growing Magnolia Trees: Tips and Tricks

You do not have to be an expert to grow Magnolia trees. They are very easy to grow, just insure you pick the right tree for your climate, and follow the growing guides for that strain of tree.

How to fertilize a Magnolia tree

This differs for every type of fertilizer, but for the most part, you should feed the Magnolia plant with 1/2 cup of granules for every 2 feet of height, then spread the fertilizer over the soil evenly.

Keep it 1 foot away from the trunks. Spread them to their drip lines where rain falls from the outermost branches. After that scratch it delicately into the surface to help with absorbtion and water well.

When is the best time to fertilize a Magnolia tree

During the first year after planting the Magnolia tree, do not apply fertilizer. You can begin the application in their second spring. Fertilize for the next 3 years in the same spring months. Do it once a month. After the fourth year of planting, fertilize in March and July only once a month.

Magnolia tree care


The best soil for a Magnolia tree is a moist, rich, slightly acidic soil. The soil can be improved with compost or leaf mold.


In addition to using fertilizer for magnolia trees, the tree must be watered to keep the soil around the base of the tree moist. It is essential to keep young trees well-watered until they become matured and established. You should water Magnolia trees every week. It can be done during the first two growing seasons.

After that, you can water the tree twice a month in subsequent years. If the evergreen Magnolia tree is planted in sandy soils, the tree needs regular watering in smaller amounts. Magnolia tree planted in clay soils require deep, infrequent waterings.

Pest and problems

Evergreen Magnolia trees are susceptible to fungal diseases. Keep the tree well pruned to remove diseased or damaged branches may prevent fungal diseases. Good pruning will improve air circulation to prevent the disease. You can also use sprays of fungicide.

Types of Magnolia trees

There are many types of Magnolia trees. They are Anise Magnolia (Magnolia salicifolia), Bigleaf Magnolia (Magnolia macrophylla), Ashe’s Magnolia (Magnolia ashei), Cucumber Tree (Magnolia acuminata), Lily Magnolia (Magnolia liliiflora), Kobus Magnolia (Magnolia kubos), Loebner Magnolia (Magnolia × loebneri), Saucer Magnolia (Magnolia x soulangiana), Southern Magnolia (Magnolia grandiflora), Star Magnolia (Magnolia stellata), Sweetbay Magnolia (Magnolia virginiana), andUmbrella Magnolia (Magnolia tripetala).