Guide

Plant health care: how a tree company can add fertilizing, treatments and cabling

Most tree companies earn their money cutting trees. Plant health care is the other side of the work: keeping trees alive and safe. Done well, it adds planned, repeat visits to your calendar. This guide covers the main services, the licensing basics in general terms, how to start small, and how to offer it honestly.

By Umair Nawaz, founder of Lirevon Updated October 25, 2026 How we check facts

Short explanation, not legal advice.

Key facts: Plant health care

Plant health care is the work of keeping trees healthy: fertilizing and soil care, insect and disease treatment, cabling and bracing, and health checks.
In most US states, applying pesticides on someone else’s property for pay needs a state license or certification. Check with your state agency before you sell treatments.
Under federal law, a pesticide label is a legal document, and using a product against its label is a violation.
Cabling and bracing does not need a pesticide license, but it is skilled structural work that needs follow-up inspections.
Health care programs give a tree company planned, repeat visits, which can fill slow months and lead to future pruning and removal work.

Source: Lirevon, lirevon.com. Market figures come from our own October 2026 check of 6,842 tree companies in 50 US states. Quote with a link.

What plant health care means

Plant health care, often shortened to PHC, is a planned way of looking after trees and shrubs. You check trees, feed them, protect them from pests and disease, and support weak parts. The goal is a healthier, safer tree that lasts longer.

For a tree company, it usually means four kinds of work: fertilizing and soil care, insect and disease treatment, cabling and bracing, and tree health checks. Pruning is part of tree health too, but you likely sell that already. This guide is about the extras.

Why it fits a tree company

You do not need to become a different business. Plant health care fits next to the work you already do, for three plain reasons.

You are already on the property

Your crew is in the yard for a removal or a prune. You can see the other trees, the soil, the dead limbs and the signs of pests. You can point them out while you are there.

It is work for the slow months

Removals and storm work come in waves. Many health care visits are planned in advance, on a schedule. That gives your crew work for quiet weeks.

It brings customers back every year

A removal is often a one-time job. A care program means you visit the same yard again and again. Each visit can turn up the next prune or removal.

It is not free money. It needs training, licensing for some of the work, careful records and honest selling.

The main services, compared

Here is each service in one line: what it is, the rules to watch and where it fits. Rules vary by state and city, so treat the middle column as a reminder to check, not as the answer.

Service	What it is	Rules to watch	Where it fits
Fertilizing and soil care	Feeding trees that are stressed, in poor soil or in lawns where leaves are raked away. Includes soil testing, mulching and soil loosening around roots.	Often lighter rules than pesticides for plain fertilizer, but some states and cities limit what you can apply and when. Check local rules.	Recurring visits; pairs well with any prune or planting job.
Insect treatment	Treating pests that damage trees, by spraying, soil treatment or trunk injection.	Using pesticides for pay usually needs a state license. Product labels are legal rules you must follow.	Seasonal programs; protecting a valuable tree before a known pest arrives.
Disease treatment	Managing fungal and other diseases with treatments, pruning out infected wood and changing care habits.	Same pesticide rules as insects for most treatments. Some diseases have no cure, so be honest about what a treatment can do.	Annual or every-few-years treatments on high-value trees.
Cabling and bracing	Installing cables and rods to support weak limbs or split trunks so the tree can be kept longer.	No pesticide license, but it is skilled structural work. A few states license tree care work itself, so check yours. Follow industry standards and inspect it again on a schedule.	Large old trees the owner wants to keep; often a yearly inspection fee.
Tree health checks	A walk around the property to note risks, pests, disease signs and pruning needs, with a written report.	Selling an opinion about tree risk carries liability. Keep notes, photos and clear limits on what you checked.	The doorway to every other service on this list.

Fertilizing and soil care

Yard trees often live in poor, packed soil. Soil care can include a soil test, mulch, loosening packed soil around the roots and, where a test shows a need, fertilizer. Do not fertilize by habit. Feed what the soil test says is missing.

Insect and disease treatment

This is the part with the most rules. Treatments can be sprays, soil drenches or trunk injections. Learn the life cycle of each pest you treat, because timing decides whether a treatment works. And be honest: some problems cannot be cured, and the right answer is sometimes a planned removal.

Cabling and bracing

Cables connect weak limbs to stronger parts of the tree so they share the load. Bracing rods hold a split or weak union together. It is not a fix-and-forget job. Hardware must be the right type and size, placed correctly, and checked again on a schedule. Learn the published industry standards for support systems before you sell it. Our tree care safety standards page points to the main ones.

Licensing and rules, in general terms

This is a short explanation, not legal advice. Rules differ by state and city. Use it to know what to ask, then get the real answer from your state agency.

Pesticides for hire usually need a license

In most US states, if you apply pesticides on someone else’s property for pay, you need a commercial applicator license or certification from the state, and often a business license on top. Insecticides, fungicides and many tree injection products count as pesticides. The agency in charge is often the state department of agriculture. Call them or check their website before you sell a single treatment.

The label is the law

Every pesticide product has a label. Under federal law, using a product in a way its label does not allow is a violation. That covers the plant, the pest, the rate, the timing and the safety gear. Read it every time.

Some products are restricted

Some products are classed as restricted use. Only certified applicators, or people working under their direct supervision, may buy and use them. Your state decides how that supervision works.

Records, notices and insurance

Many states require you to keep records of each application and sometimes to notify neighbors or post signs. Your general liability policy may not cover pesticide work, so ask your agent in writing. See our insurance guide for the questions to ask.

Local rules can be stricter

Some cities and counties limit fertilizer near water, ban certain products or set blackout dates. A few have rules about work on public or protected trees. Check before you quote.

Some states license tree work itself

A few states require a license or registration to sell tree care services at all, separate from any pesticide license. If yours does, that can cover cabling, pruning and health checks too. Ask your state before you advertise.

Insurance questions matter as much as licensing. Read the insurance guide for tree services before your first treatment, and keep proof of coverage ready for commercial customers.

How to start without big risk

A slow, careful start keeps costs low and keeps you out of trouble.

Start with what needs no license

Health checks, mulching, soil care and cabling can start before anyone on your team holds a pesticide license, if your state allows it. Use these to learn the work and build a list of interested customers.

Get one person licensed

Pick one reliable crew member, or yourself, to study for the state exam. Budget for the exam, continuing education and time off the saw; your state sets the costs.

Start with a few common problems

Do not try to treat everything. Pick the two or three pests and diseases that hit trees in your area most often, learn them well and build simple programs around them. Your local extension office is a good, free place to learn what is common.

Buy small, then grow

You may need a sprayer, an injection kit, soil tools and safe storage. Rent or buy small at first. Equipment buy vs rent →

Training helps with both skill and trust. Our arborist certifications page explains the common credentials and what each one covers.

Pricing and programs

We will not give you a price per tree, because there is no honest national number. Costs depend on your region, your products, tree size and drive time. Instead, here is how to build a price you can defend.

Price by the tree, by the trunk size or by the visit, and write down how you decide. Customers trust a price they can understand.
Include product cost, labor, drive time, licensing and insurance. A health care visit that looks small on paper can still eat half a day once you count the drive.
Sell programs, not single sprays. A yearly plan with set visits is easier to schedule, easier to explain and easier to renew.
Charge for inspections. A written health check takes skill. If you give it free, say so as a choice, and know what it costs you.
Cabling usually has two parts: the install and a follow-up inspection, often each year. Quote both so the customer is not surprised.

To lay out your services and prices in one clear sheet, use the price guide builder. For the wider method, read how to price tree work.

How to offer it without being pushy

Customers can smell a hard sell. Teach, show and let them choose.

Point it out, with a photo

During a job, take a clear photo of the problem: a split crotch, holes from boring insects, thin leaves, fungus at the base. Show it to the customer and explain it in one or two plain sentences.

Say what happens if they wait

Be honest. Some problems get worse fast and some can wait. Telling a customer "this one is not worth the money" builds more trust than any sales line.

Put it in writing

Add a health care line to your estimate as an optional extra, with a clear price. A written option can be accepted later.

Follow up at the right time

Many treatments only work in a certain season. Note the date and send a short reminder when the window opens. A good follow-up habit turns "maybe later" into booked work.

Ask your past customers

Your customer list is your easiest market. A late-winter message offering a health check can fill spring visits, if they agreed to hear from you.

Seasonal reminders are where many upsells are won or lost. Plan them with the quote follow-up planner. Texting past customers has rules too; read the texting rules guide for a short explanation, not legal advice.

Launch checklist

Work through this list before you sell your first program. Print it or copy it into your notes.

Called the state pesticide agency and written down which license, category and business registration you need.
Asked your insurance agent, in writing, whether your policy covers fertilizing, pesticide work and cabling.
Chosen the two or three problems you will treat first, using your local extension office.
Written a simple health check form with photos, notes and clear limits on what was checked.
Built a price list for health checks, programs and cabling, including the follow-up inspection.
Set up record keeping for every application: date, product, rate, location and who applied it.
Added an optional health care line to your estimate template.
Added a plant health care section to your website and Google Business Profile, only for the work you are licensed to do.
Set reminders for seasonal treatment windows and yearly cabling checks.

When the service is ready, people need to find it and reach you. Lirevon helps tree companies catch every call and lead, with a fast website and a tuned Google Business Profile. See our services, check pricing or ask for a free audit. Lirevon is new and has no tree-service clients yet; first case studies are planned for December 2026.

Common questions

Do I need a license to fertilize trees?

It depends on your state and city. Plain fertilizer often has lighter rules than pesticides, but some places regulate fertilizer too, especially near water. Mixed products that contain a pesticide count as pesticides. Check with your state agency. This is a short explanation, not legal advice.

Do I need a license to spray or inject trees for pests?

In most states, yes, if you do it for pay on someone else’s property. You usually need a commercial applicator license in a category that covers trees and ornamentals. Rules vary by state, so call your state pesticide agency before you start.

Can a crew member apply pesticides under my license?

Some states allow trained, unlicensed workers to apply some products under a licensed person’s supervision. Others do not, and restricted-use products have tighter rules. Your state decides, so ask them directly. This is not legal advice.

Is cabling and bracing worth offering?

For many companies it is, because it lets customers keep large trees they love, and it adds a yearly inspection. It takes skill and the right hardware, and you should follow industry standards. Read our arborist certifications resource to see what training is out there.

How do I price a plant health care program?

Add up product, labor, drive time, licensing and insurance, then set a price per tree, per trunk size or per visit. Prices vary a lot by region, so build your own list and test it. The price guide builder tool can help you lay it out.

What should I treat first?

Pick the two or three pests and diseases that are most common in your area. Your local extension office can tell you what is active. It is better to do a few things very well than many things badly.

Does my insurance cover pesticide work?

Not always. Some general liability policies leave out pesticide or chemical work, or need an add-on. Ask your agent to confirm in writing before your first treatment. This is not insurance advice.

Should I promise that a treatment will save the tree?

No. Treatments can help, but trees are living things and some problems cannot be fixed. Explain what the treatment can and cannot do, and write that on the estimate.

Should I list plant health care on my website?

Yes, once you can legally do the work. Give each service a short, clear section or its own page, say which towns you serve, and only list treatments you are licensed for. Add the same services to your Google Business Profile.

How do I find customers for plant health care?

Start with the yards you already work in, and your past customer list. Point out problems with photos during jobs, add an optional line to every estimate and send seasonal reminders to people who agreed to hear from you.

This page is general information, not legal or insurance advice. Licensing rules differ by state and city. Check with your state pesticide agency before you apply any product for pay.

Keep reading: common tree pests and diseases, tree species guides, cabling and bracing, certified arborist.

Turn one-time jobs into repeat customers

Lirevon helps tree service companies answer every call and follow up on every lead. Get a free audit, see the services or check pricing.