An introduction to tree fertilizing

​People plant trees for many reasons like enhancing the curb appeal of a property, privacy, providing shade, and supporting the wildlife. Given how valuable they are, we all want to keep them in good shape.

In order to thrive and grow to their full potential, trees require a little bit of help in the form of tree fertilizer, especially in an urban and semi-urban environment. Fertilizers are an essential element in ensuring that a tree becomes more robust and fights against various infections.
​Here is a brief guide to tell you all about tree fertilizing.

​Why should I fertilize my trees?

Trees growing in a forest rarely need nutrients since fallen leaves decompose and form nutrient-rich soil. However, sometimes, the soil is not able to provide enough nutrients for healthy and vigorous growth. This could be due to low moisture availability, physical damage, nearby construction, and competition from nearby trees. Fertilization can help your trees to some extent but not entirely. To eliminate excess stress, you need to do several other measures like pruning and watering to maintain a healthy growth rate.

​How do you prepare for fertilization?

You can contact a certified arborist to know more about the local soil conditions. The analysis will give you vital information regarding soil pH, macronutrient content, and recommendations for amending the soil. You need a fine combination of macro and micronutrients to ensure optimum soil health. 
The essential macronutrients needed by the soil are:

• Potassium
• Sulfur
• Nitrogen
• Calcium
• Magnesium
• Phosphorous

The essential micronutrients are:

• Chlorine
• Iron
• Manganese
• Zinc
• Copper
• Molybdenum
• Boron

To prevent overfertilization, you need to determine the existing levels of macronutrients.

​How do I know if my trees have enough nutrients or are lacking them?

Look for these signs to know when it’s appropriate to fertilize your tree.
Small leaves: It could be a result of your tree is lacking in nutrients
Minimal growth: Poorly colored leaves (Yellow, brown, or twisted leaves), earlier than normal fall, and little annual twig growth are signs of low levels of nutrients in the soil. It is essential to know the cause before you go for fertilization. 
Dying branches: If you notice dead branches near the top and sides of your tree, it’s possible the soil is not providing enough nutrients to your tree to feed these peripheral branches.

​When to fertilize?

​You can apply it from late September through early April. The best time for fertilization is before the soil freezes in October. During this period, the soil soaks up enough nutrients, which are then stored for growth following spring. You can also apply fertilizer during March or April, just before the new development starts. Remember to use the fertilizer in newly planted trees lightly. To promote rapid growth, make it an annual task.

​How much fertilizer should I apply?

​Fertilizers can be classified as organic or inorganic. While nitrogen in organic materials is released slowly to the tree’s roots, nitrogen in inorganic fertilizers is removed quickly. Slow-release fertilizers provide the benefit of applying large amounts in one go as they will not pose the risk of burning the roots of a tree. Use 2 to 4 pounds of actual nitrogen for shrubs and trees per 1,000 square feet of root spread area per year.

​About Seacoast Tree Care

If you are looking for certified arborists to take care of your tree removal needs, Seacoast Tree Care is your one-stop destination. We offer a complete range of tree services in New Hampshire, Maine, and Massachusetts. We are experts in tree pruning, cabling, fertilizing, preservation, pest control, and root collar excavation.
To get information, call us at 603-431-0101 or 978-225-6644, or email us at info@seacoasttreecare.com.