Lessons From The Forest Floor

Lessons From The Forest Floor

If you want to better understand trees and the nutrition necessary for prime health and proper growth, Davey expert and ISA Board Certified Master Arborist R.J. Laverne suggests you take a walk in the forest.

"On the forest floor, we can see there's a lot of organic material on the top layer of soil - broken up leaves and twigs from last year," he explains, picking up a chunk of the soil in his hands. "Going through the soil profile, we see there's little and smaller bits of organic material and lots of organisms in the soil like earthworms and nematodes. Their job is to break up organic materials that accumulate on the ground and incorporate them back into the forest soil."

As Laverne squeezes the forest soil, he describes the texture as "spongy," which is the result of those organisms that help infuse oxygen into the soil. This makes the soil perfect for "absorbing rainfall and allowing oxygen to get to the roots, which is very important for trees," he says.

Trees planted in urban or developed environments, such as those in a typical home landscape, are often exposed to stresses not usually found in woodlands or natural environments. Raking leaves and removing topsoil on construction sites eliminates natural sources of plant nutrients: decaying organic debris. The nutrients from this debris keep trees in the wild from needing any additional fertilization, but trees in cultivated areas often need extra attention.

FOREST FLOOR WEB

This is why landscape trees need to be fertilized on at least an annual basis - to give them the nutrients they're lacking compared to their counterparts in the forest environment.

Nitrogen, phosphorus and potassium are the primary nutrients found in fertilizers. A fertilizer's grade lists the levels of each of these three nutrients in N-P-K order on product packaging. "The best combination for N, P and K is not much different than what we find in the natural forest setting," Laverne says. "The right combination should provide nutrients to landscape trees and help to feed the microorganisms in the soil that decompose organic materials and make for healthier soil."

With proper maintenance and some regular fertilization, Laverne says "you can have landscape trees that will be valuable components to your landscape and stay healthy for a long time."

Add a comment:
Related Blog Posts
  • Identifying Common Fall Tree Insects (Pests)

    Creepy webs in trees, chewed leaves or dying tree branches are not what you pictured in your fall landscape.

    Browse the symptoms to see what fall pest may be hurting your tree and how to stop it.

    Read More
  • On the Lookout for Fall Foliage ... and Healthy Trees

    Come early September, my mind, body and spirit are ready for fall. It's my favorite season, and I can't list enough reasons why I love these next few months so much.

    It starts when apple cider hits the grocery shelves, and I get excited just thinking about the hayrides, pumpkin patches and apple orchards in my near future.

    Then, those Pumpkin Spice Latte advertisements catch my eyes and ears from every billboard, radio segment or magazine ad within reach.

    Read More

Request a consultation

What do you need services for?
Sorry, we can’t seem to find the zip code you specified. Our residential tree care offices may not service your area. If you believe this is an error, please try again. Need help? Email us at info@davey.com.
  • Email newsletter
  • Woodchips
*Please fill out all required fields.