Local Arborist Logo
Local Arborist Logo
Deep Root Fertilization

Tree Deep Root
Fertilization in Toronto

Boost the health of your trees and shrubs with root fertilization.

Get a Free Quote

ISA Certified Arborists in Toronto

24/7 Emergency tree care

Root fertilization is important to ensure that your trees and shrubs are getting the nutrients they need to encourage healthy growth and to fight off disease and pests. Fertilization is especially important for landscaped trees in urban areas, where soil nutrient depletion is extremely common. With deep root fertilization you can restore the nutrient balance in the soil and enjoy more beautiful, healthy, and vibrant trees.

separator icon

What is Deep Root Fertilization?

Deep Root Fertilizing works by injecting a balanced mixture of minerals and nutrients directly into the soil around the root systems of your trees to promote this absorption. For most trees, this means applying the fertilizer directly below the surface of the soil. However, bigger trees require a slightly more complex approach. The most common way of injecting these fertilizers is with the use of a special “soil needle”. The liquid fertilizer solution is pumped through that needle deep into the soil.

separator icon

Why Do Trees Need to Be Fertilized?

Trees rely on their root systems to obtain nutrients and minerals from the soil. If there are soil deficiencies, it is challenging for trees to get the sustenance they require for healthy growth.

As organic material is broken down over time with the help of micro-organisms, essential nutrients and minerals are added back into the soil for plant roots to absorb. In many metropolitan areas, the essential organic matter needed to feed the trees – things like leaves, grass clippings, and garden waste – are cleaned up and taken away…which means essential nutrients are also being taken away. With the help of deep root fertilization, those vital nutrients and minerals are supplemented to support tree growth.

Deep roof fertilization in Toronto
separator icon

Best Time to Fertilize Trees

For most applications, deep root fertilization is best performed in early fall or early spring.

Early fall is the most common time for Deep Root Fertilization services to be performed in Toronto and other parts of Southern Ontario. This allows an adequate amount of time for the roots to absorb the newly added nutrients before the freezing temperatures arrive and avoids the stress placed on trees by extreme summer conditions.

By adding fertilizer in early spring, your trees can take full advantage of the additional nutrients for new growth. This new growth also needs time to harden off before the harsh temperatures of winter arrive in Toronto.

separator icon

Advantages of Deep Root Fertilization

There are many advantages of deep root fertilization, from saving sick and malnourished trees to increasing fruit production. Deep Root Fertilization is a fast, effective way to address many tree issues.

separator icon


Thank you Marion, your team did a great job at my residence. I would highly recommend your services to anyone.
David Spagnolo
We had an amazing experience with the Local Arborist. We came to them after another company bowed out at the last moment, after the service had already been scheduled, explaining that our case was too difficult for them to take on. The Local Arborist saved us! They were prompt and communicative, and very transparent about pricing and potential obstacles. In the end, they were able to remove the tree earlier than the previous company would have done it.Marian kept in touch with me throughout the process on the day of the removal, and advised on the future replanting process. They even trimmed an adjacent tree for us while performing the removal. It was an extremely positive experience, and we look forward to working with the Local Arborist again in the future.
Natalia Khomenko
Clean, reliable, thorough and professional . Generally awesome.
Steve Sanguedolce - artist
On timeAssessed the task at hand and divided workloadTidy and attention to detailHead arborist went above and beyond by removing a wasp nest from a tree that needed a trim.Crew was polite and careful with cleanup.Would highly recommend.
Cheryl Markle
A great company to call! I initially spoke with Mariann to book an appt for a tree that needed careful pruning. He called promptly and passed by to view and give me a quote. A very pleasant & professional guy. 3 guys, Joel, Sasha & Eddiie came to my home, they were absolutely great! Very nice, pleasant and took care of what was needed. I would defenitely call them back should I need this service again. We'll done gentleman, and thank u again.
Chris Davad
These guys were excellent. They were prompt, well coordinated and very professional. Great teamwork. The job went very smoothly. They finished on time, took away all of the debris and logs (it was a huge tree removed from the backyard, and huge stem cut from a tree in the front). They were even careful not to drop logs from too high to avoid getting holes and dings in our lawn. They completely cleaned up our yard and both of my neighbour’s’ yards. My neighbours were very pleased. They even blew off the decks and driveways. Very impressive, and the price was very reasonable. Marian even followed up with a phone call afterwards (and before the team left) to make sure that I was satisfied with the job. I would strongly recommend Marian and his team to anyone.
Mark&Leone Foxwell
Local Arborist tree services is very good company. They did very professional job especially Marian and Jon.I am high recommend this company. Thank you so much!
Candice Hu
Service was well done, safe and efficient rAlso very tidy afterwards. Loved that there was use of electric saws as well for a more quiet and environmentally friendly experience
annette Taffy
Fantastic service from my meeting with Marian to the professional job Joel and Eddie did. Beautiful clean up. I am so very pleased. Highly recommend
Gina B
Local Arborist's pricing was competitive and they showed-up at the appointed time. The crew (Joel and Eddie) were very polite and a pleasure to deal with. The agreed scope of work was completed in a timely, professional and extremely competent manner. Moreover, Joel and Eddie took great care to clean-up the site following completion of the job. I would not hesitate to work with Local Arborist again or to recommend this firm to anyone who has the need for such services.
Dennis Miller

Ensure your trees and shrubs have the essential nutrients and minerals they need to to grow healthy and beautiful. Contact Local Arborist today to schedule your Deep Root Fertilization service!

separator icon

Why Choose Local Arborist?

Local Arborist is an experienced tree care company in Toronto, providing expert Deep Root Fertilization and other tree care services.

isa certified arborist

Marian Shuflin

Licenced ISA arborist

separator icon


How do I know if my trees are suffering from nutrient deficiencies?

You may notice things like new yellow/white leaves, misshapen or smaller than usual new growth. Die back, leaf shrivelling or early leaf falling can also be signs of nutrient deficiencies.

Is Deep Root Fertilization better than applying fertilizer to the top of the soil?

Topical fertilizer application can be effective. However, more often than not, surrounding plant life (such as grass) absorbs the newly added nutrients before they ever reach the root system of trees. Deep Root Fertilization is effective because of its targeted application.

Where does Deep Root Fertilization need to be injected?

Typically, we inject the fertilizer solution around 4-6 inches below the soil surface. We ensure there is enough solution to fully reach the entire root system beneath the span of the canopy. Trees have differing sizes of root systems, though, so where the treatment is applied can vary.

separator icon

Services You May Need

tree health care in Toronto

Tree Health Care

Protect your trees against damage from pests and disease, such as Asian Longhorned Beetle or Blister Rust, with customized Tree Health Care Services.

tree injections in Toronto

Tree Injections

Also known as trunk or stem injections, tree injections improve health of your trees by delivering targeted treatments for a wide variety of tree illnesses and issues.

tree cabling and bracing in Toronto

Cabling & Bracing

Give your mature trees the structural support they need with cabling and bracing services.

Free Consultation & Estimate

Free Consultation & Estimate

Local Arborist provides free tree service consultations and estimates for tree care

Go to Top