2 1/2 tablespoons for a 10-8-6 fertilizer, 1 1/4 tablespoons for a 21-0-0 fertilizer. Needles are not a healthy green color, or are shorter than normal. Inorganic nitrogen based tree food sources are sodium nitrate, ammonium nitrate, … Plus, it goes right to their roots so that they can better absorb the good stuff! University of Minnesota Soil Testing Laboratory, Protecting trees and shrubs from winter damage, Growing landscapes to help bees and other pollinators. Your soil test will determine your fertilizer needs, and then a tree care … The amount of fertilizer to use per hole will vary depending on formulation. For newly planted shrubs and trees, or in areas where the potential for runoff is very high, such as slopes or compacted soil, slow-release fertilizers are a good choice. And this is a very popular product that’s designed to be used on evergreens, and acid-loving deciduous trees, shrubs, and flowers.. Scotts is a household name when it comes to fertilizers. That way, the nutrients should make it to your evergreens’ roots (as long as you place the spikes deep enough). It depends! Different fertilizers come with different features. By continuing to use this site, you accept our use of cookies. Trees and shrubs that need fertilization to stimulate more robust and vigorous growth include those exhibiting pale green, undersized leaves and reduced growth rates and those in de… Deborah Brown and Julie Weisenhorn, Extension educator, Gary Johnson, Extension forester and Beth Jarvis, horticulturist. Liquid fertilizer leaches through sandy soil quickly, and may need to be applied several times throughout spring and early summer. As long as the rate used is two pounds actual nitrogen per 1,000 square feet or less, you can spread the fertilizer with a drop spreader under the evergreen branches and slightly beyond, then water it in well. The plant has suffered significant damage from insects or disease. Depending on the variety, evergreen yews (Taxus spp.) Jobe’s Evergreen Fertilizer Spikes. See our how to pot evergreen trees page for helpful [read: urgent] tips and information on how to do it right, and the multiple gotchas to look out for. Nitrogen is a mobile nutrient that leaches through soil and needs to be replenished most often. That evenly distributes the … At Davey, our arborists inject Arbor Green PRO ® directly into the soil of the tree’s root zone. If you can’t match both the nitrogen and potassium you need in a commercial fertilizer, just match the nitrogen. Inorganic Fertilizers Inorganic fertilizers are inexpensive and are the most frequently used fertilizers for trees. Granular products often do a better job of getting the nutrients to all the roots, if there’s no grass around the tree. Though a number of different theories exist on when and whether to fertilize evergreens, rely on a few basic strategies to keep your evergreen trees healthy and looking their best. What is the Best Fertilizer for Evergreen Trees. That means the rest of the root system misses out! The formula is excellent for evergreens, dogwoods, hydrangeas, magnolias, and many other acid-loving trees … Also, evergreens prefer acidic soil, meaning it has a pH level below 7. Any higher rate would burn the grass it was spread onto, even if it were watered immediately after application. Example 2: A 30 pound bag of 21-0-0 is 21 percent nitrogen. To fertilize your trees, broadcast the recommended amount of fertilizer … New growth is much more likely to suffer winter injury and dieback. But it can also mean additional work when applied to light, sandy soil. A “complete” fertilizer — one that supplies the macronutrients nitrogen (N), phosphorus (P), and potassium (K) — is often recommended. Evergreens grow best in … If you want to have the best looking oak tree, evergreens, or palm trees in the valley this is the product to use. Landscape fabric or “weed barriers” are not recommended under organic mulch such as shredded wood. Choosing the best tree fertilizer is not as easy as it may seem. While your tree would get a tiny dose of nitrogen, it’d miss out on its phosphorus (P) and potassium (K) that it needs. Sign Up for Free Tree & Landscaping Tips! The soil test will also indicate if the soil is acid or alkaline. Blue Spruce trees grow best in USDA Hardiness Zone 3 through 8. Ideally, a 1:1:1 ratio is best. Well, that could be happening because your tree doesn’t have enough nutrients in its soil to thrive. Whether you already have a few shrubs or a full-grown evergreen tree in your yard, own a Christmas tree farm, or are planning to reforest an area, you better know what product is the best fertilizer to keep your evergreens green all the time and avoid costly losses.. Evergreen trees … That will confirm if your tree needs fertilizer while also detailing what nutrients the soil is lacking! It is not unusual for newly transplanted evergreens to exhibit slow growth until they're re-established. Evergreen trees and shrubs benefit from fertilizer applications and soil amendments that add nitrogen and enrich the nutrient value of the soil. For example, if a bag has the numbers 34-0-4 that means it contains 34% nitrogen, 0% phosphorus, and 4% potassium. Generally speaking, a slow-release formula made for trees is best. At Davey, our arborists inject Arbor Green PRO® directly into the soil of the tree’s root zone. Buy on Amazon. Fertilizing your indoor … There is a reason for that: evergreen trees respond more quickly to nitrogen than they do other nutrients. You can also mulch over the fertilized soil, then water generously so … All Rights Reserved. Well-rotted manure or seasoned compost will add a small amount of nutrients as they break down further. For example, adding coffee grounds or organic matter around your evergreens’ soil is a good place to start if you need to increase your soil’s acidity. Example 1: A 40 pound bag of 10-8-6 is 10 percent nitrogen. See. This can help evergreens tolerate winter and emerge healthier in the spring. But, if there’s grass, that will soak up most of the nutrients! The best time to fertilize your evergreens is before new growth expands, around early April in Minnesota, up to about mid-July. The blue spruce is an evergreen tree variety that reaches a height up to 135 feet. Q: What fertilizer is best for trees and shrubs? It … Twenty-one percent of 30 is 6.3, which means the bag contains 6.3 pounds of actual nitrogen. View our, Evergreen Tree Identification Guide: How to Tell the Difference Among Spruce, Fir and Pine Trees, Winter Watering for Evergreens: What You Need to Know, Fast Growing Tree for Privacy: Leyland Cypress. ©2020 The Davey Tree Expert Company. Space the holes about 2 feet apart in large concentric circles, starting 1 1/2 feet from the trunk of young trees or 3 feet from the trunk of larger, more mature trees. The absolute best way to determine what fertilizer you should use is a soil test. So, what should you do if your pine’s color is lackluster or it’s growing slower than molasses? For shrubs and smaller trees, you can either mix the fertilizer in a bucket of water and apply to the base of the tree, or attach a garden feeder to the end of your hose and apply. The best way to determine if evergreens need a dose of fertilizer is if the tree doesn’t flower or the needles aren’t a vibrant color. A mulch ring around a plant will protect the stem / trunk from being damaged by lawnmowers and trimmers. Extension is expanding its online education and resources to adapt to COVID-19 restrictions. Jobe’s Tree Fertilizer Spikes. Good for use in spring, summer, and fall this product is designed to give your majestic trees … Choosing a Fertilizer for Christmas Trees or Other Evergreens . Broadcast a granular fertilizer … Make holes about 8 to 12 inches deep. Tree Service Experts Since 1880. Below are our evergreen planting instructions and other information helpful for the proper planting and care of evergreen seedlings and transplants. You are trying to grow evergreens in a less than ideal site, such as very sandy or heavy clay soil. Tree & Shrub Food. It's easy to figure out how much actual nitrogen is in a bag of fertilizer, because the numbers in the fertilizer analysis are actual percentages, by weight. Fertilize evergreens only when it is recommended in a soil test report. A common "maintenance rate" of fertilizer is two to four pounds actual nitrogen per thousand square feet of soil surface, applied every two to four years. By continuing to use this site, you accept our use of cookies. Fertilizer packages will include an analysis of the percentage of various nutrients and minerals that are included in the bag. And if you’re using a granular product, you have to be careful not to over apply! Evergreens add year-round interest to landscapes. Evergreens are supposed to be just that–all green all the time! Landscape fabric is recommended under non-organic mulches such as rock and shredded rubber to prevent these materials from working their way into the soil. One of the easiest fertilizers to apply is Shake ‘N Feed by Miracle-Gro. The mulch ring should start at the root flare (where the main tree roots point out away from the trunk) and continue out from the tree trunk at about three or four inches deep. That evenly distributes the nutrients that trees need. Test results will also provide information about your soil's pH (7.0 is neutral, less than 7.0 is acidic, and higher than 7.0 is alkaline). So, if there’s grass around your tree, these spikes may be a better option since they’ll deliver the product below the grass roots. If your tree is mulched, spread the fertilizer right over the mulch and water in well. The needle foliage is stiff with a blue or silver-colored tint. It is very easy to over fertilize an evergreen. Don’t apply fertilizer later than mid-July as this will stimulate new growth late in the season. Best for Indoor Plants: Miracle-Gro Indoor Plant Food Spikes. Evergreen trees do not require much fertilizer, if any at all. The fertilizer container will tell you how much of the product to use per tree. While evergreens generally require less fertility than deciduous trees and get some nutrients from soil, at some point you might need to fertilize your evergreens. Fertilizer recommendations are usually given in pounds per thousand square feet. Again, this method of fertilizing, though convenient, is more costly than applying standard granular fertilizer. Read on to find out if that’s right for your tree and what to use. How to Fertilize Evergreens Yews. Otherwise, opt for a product with equal parts of the three macronutrients trees need: nitrogen (N), phosphorus (P) and potassium (K). The soil pH can affect whether certain minerals can be accessed by plants for healthy growth. It blends three key macro-nutrients, nitrogen (N), phosphorus (P) and potassium (K), to mimic the natural environment and give trees the nutrients they need to thrive. are typically hardy between U.S. Department of Agriculture plant hardiness zones 4 and 9. In many landscapes, evergreens also benefit from fertilizer you apply to the lawn. Applying fertilizer for arborvitae trees correctly is a matter of following easy directions. Divide the amount of fertilizer needed, and place it equally into each hole. Davey uses cookies to make your experience a great one by providing us analytics so we can offer you the most relevant content. So, you’ll see more consistent growth throughout the tree. Typically, evergreens are mulched with wood chips or shredded bark. It is always best to submit a soil sample to the University of Minnesota Soil Testing Laboratory before purchasing and applying fertilizer, as most soil already has sufficient amounts of phosphorus. © Feed mature established evergreens once each year in the spring with a complete formula granular fertilizer … If you are looking for the best spike fertilizer for arborvitae, Here is the … To find out how much to use, figure out roughly how many square feet your tree or shrub covers. Davey uses cookies to make your experience a great one by providing us analytics so we can offer you the most relevant content. Foliage color, lack of flowering or overall vigor can be signs of when fertilizer is needed. A fertilization program is used to maintain trees and shrubs in a vigorous condition and to increase their resistance to injury from diseases and insects. Generally speaking, a slow-release formula made for trees is best. However, the addition of any soil nutrient is recommended only if soil or plant foliage tests indicate a deficiency. Mulch gives a landscape a “finished” look. These diagnostic tools will guide you step-by-step through diagnosing a plant problem or identifying a weed or insect. Like all landscape plants, evergreens require nutrients to grow well. If that’s the case, go for a 1:0:1 ratio. When you whip up a DIY remedy, it simply doesn’t have the right formulation of all the nutrients your tree needs. While these are super easy, they aren’t perfect. If conditions continue to be dry after you've fertilized (e.g. Mulch that is deep enough (3 to 4 inches around trees and shrubs) will prevent weed growth and adds organic matter to the soil as it breaks down. Subscribe to the "The Sapling" on the Davey Blog for the latest tips to keep your outdoor space in tip-top shape throughout the year. 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