Uniformly broadcast the fertilizer … Place fertilizer in 6- to 12-inch-deep holes about 2 feet apart in concentric circles around the tree trunk and extending about 6 feet beyond the branch spread of the tree. This article has been viewed 6,710 times. Click here for more helpful tips: https://bit.ly/2MWngw8 This video was sponsored by Espoma! Lauren has worked for Aurora, Colorado managing the Water-Wise Garden at Aurora Municipal Center for the Water Conservation Department. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Trees growing in their natural habitat should have access to all of the minerals they need to survive and grow. The best and simplest way to feed a citrus tree is to use specially formulated citrus fertilizers. Apply fertilizer every 2 to 3 years as needed to avoid over-fertilizing. Always read the entire label before you apply any fertilizer. Apply fertilizer the same year so your tree can begin to heal. To find out how to obtain the correct fertilizer for your trees or shrubs, click here. Spreading granular fertilizer on the lawn might make your grass greener, but it will likely not help your tree. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014. During the growing season, fertilizing can help a tree overcome mineral deficiencies and fight off infections. Irrigate the area after fertilizing … Another way to estimate how much fertilizer you need is to multiply the tree’s age by 0.10. Covid-19 Update When fertilizing trees and shrubs, keep these two points in mind: (1) Fertilizer is beneficial when it is needed; but (2) Use it in the right amount, at the right time and in the right place. Spreading granular fertilizer on the lawn might make your grass greener, but it will likely not help your tree. Make sure you measure the tree’s trunk at about chest height in order to get a safe estimate on how much fertilizer you need. How to Feed Your Trees Use a fertilizer with a nitrogen content of between 12 and 30 percent, and 3 to 12 percent phosphorous and potassium. Providing too much fertilizer can be as dangerous as not providing enough! In general, the roots extend well beyond the outer reach of a tree's branches. A 3-inch layer of organic compost applied as mulch every spring -- starting a few inches from the trunk and carrying through to the drip line -- might be sufficient. You can also purchase a testing kit at most home improvement stores. Make sure that the fertilizer … An older tree will grow by about 4 to 6 in (10 to 15 cm) every year. Only Fertilize When Needed. If you are growing an orchard of pecan trees, and looking to make a profit, you'll probably want to use a fertilizer containing ammonium sulphate, which is typically accepted as the suitable fertilizer … This article was co-authored by Lauren Kurtz. Spread fertilizer if your tree looks diseased or damaged. Care for your own trees with our 3-step do-it-yourself maintenance kit. Last Updated: March 29, 2019 It can be particularly useful if you rake up the tree’s leaves or if there are grass and other competing plants above the roots. Find a tree fertilizer with a slow (also called controlled) release and low salt index. Establish a Need for Fertilizing. For the best results, test your soil often to stay on top of any problems. If you dug holes to access the roots, fill the holes with the fertilizer. The fertilizer must also be placed underneath the roots of any competing plants such as grass or other ground cover. To avoid damaging your tree, consider testing your soil first to determine what kind of fertilizer you need. While fertilizer can't solve all of a tree's problems, it will go a long way to give it a fighting chance. Both newer and older trees don’t need it. This article was co-authored by Lauren Kurtz. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Most fertilizers can be spread comfortably about the base of a tree, much as a … Most of the roots will be no more than 18 in (46 cm) below the surface, so be careful. Small trees and shrubs, and in this case we mean younger trees and bushes that haven’t yet reached their mature stage, are much more likely to need fertilizer than older, large trees. She earned a BA in Environmental and Sustainability Studies from Western Michigan University in 2014. Areas such as sidewalks, driveways, and buildings don’t count when determining the tree’s growing area. Anything you can do to mimic that habitat can reduce the need for fertilizer. Thanks to all authors for creating a page that has been read 6,710 times. free shipping on orders over $100. Chances are, though, that despite your best efforts, the need for fertilizer will not be entirely eliminated. Spreading fertilizer on the soil surface is sufficient to reach these feeder roots. Avoid applying fertilizer every year. Healthy trees often do not need extra nutrients. Trees near these structures will need less fertilizer overall. Palm trees are quite prone to magnesium deficiencies, which with cause older foliage to turn yellow to orange, while newer foliage may retain a deep green color. A new tree will grow by approximately 9 to 12 in (23 to 30 cm) every year. These minerals all have different effects on the growth of a tree and different trees need different formulations. For example, if you estimate you need 0.3 lb (0.14 kg) of nitrogen in a 30-10-10 fertilizer, you will need about 0.9 lb (0.41 kg) of fertilizer. This fertilizer can be tossed out by hand around small trees or spread with a small push-type rotary spreader around a large tree. … Fall is the ideal time because the tree is still active, so it will absorb nutrients and store them for spring growth. General fertilizers for woody plants will have a nitrogen-phosphorus-potassium ratio of 8-1-1 or 15-5-5. Include your email address to get a message when this question is answered. If your soil lacks phosphorus, potassium, calcium, or other nutrients, you can get liquid fertilizer and inject it directly into the soil. Maple Large – Pruning, Winter Care and Fertilizing Maple Large: this would include Sugar, Norway, Silver, Red (rubra) Miyabe and freeman Hybrids. Lauren Kurtz is a Naturalist and Horticultural Specialist. The fertilizer must also be placed underneath the roots of any competing plants such as grass or other ground cover. Fertilize the redwood yearly. Some of these tests may not be as detailed as an official test, but usually the results can help you figure out how to improve your soil. This measurement is the diameter of the branch spread and will give you an idea of how far the tree’s roots have spread. Depending on the species, your tree will reach maturity within 10 to 30 years. Small, pale leaves and short branches are a few clear signs age by 0.10 line ( ends the! Small trees or shrubs, click here for more helpful tips: https: //bit.ly/2MWngw8 this was! ( 10 to 15 cm ) every year please help us continue to you! Avoid touching the tree ’ s age by 0.10 has worked for Aurora, Colorado managing the Garden! 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