Below, Spartz shares everything you need to know about fertilizing your trees this fall.
See if Your Trees Need to be Fertilized
"If you have grass growing around your trees, they're competing for a limited amount of water and nutrients in the soil," Spartz says. "And grass usually wins. That's why it's important you regularly check if your trees have enough nutrients."
Read on to learn his advice about fertilizing trees.
Why: As Spartz mentioned above, grass often outcompetes trees for limited nutrients. But that's not the only reason trees need our help. In forests, soils have nutrients galore. In yards, that's not often the case. As we sweep away leaves, twigs, and fallen bark, we remove potential recycling of nutrients.
When: Look for signs that your trees are lacking nutrients in the soil to see if you need to fertilize.
Shorter than normal annual twig growth
Undersized leaves that are fewer in number
Dead branches and branch tips
Leaf veins darker than leaf margins
Leaves any other color than dark green, such as yellow or purple
Best Time to Fertilize: If you spot one of the above signs, test the soil to confirm your hunch. Grab a soil test from your local garden center, send off a sample to your extension agent or have your arborist check to see if any elements are missing or in short supply. If you need to, it's usually best to fertilize sooner rather than later. Pick a tree fertilizer with a slow, controlled release and low burn potential. That way you don't have to worry about the "best time to fertilize." You can apply when your trees need it most.
How to Apply Like a Pro: Select a fertilizer made for woody plants with the right mixture of nitrogen (N), phosphorus (P) and potassium (K). This blend, found in Davey's Arbor Green PRO® , mimics the natural environment to give trees the nutrients they need to thrive. If your fertilizer has PPA, like Arbor Green PRO® does, that's even better! That amino acid helps enhance nutrient availability while reducing nutrient loss from rain or watering.
With more than 9,000 employees throughout North America, The Davey Tree Expert Company provides solutions for residential, utility, commercial and government clients. Rooted in research, the company's vision is to achieve balance among people, progress and the environment. Tree experts since 1880, Davey provides diversified tree services, grounds maintenance and environmental services. Davey is one of the largest employee-owned companies in the U.S. and is headquartered in Kent, Ohio.
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