Progressive Tree Service

Progressive Tree Service We are a professional tree removal and care service located in Evanston, Illinois.

Progressive tree specializes in tree removal and tree care services, including:
stump removal, tree trimming or pruning, tree shaping, cabling and bracing, and tree health care such as insect and disease management. At Progressive Tree Service, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all the work we pe

rform and are experts that will always keep you educated about the work process. We also value your family's safety as well as the safety of our employees, which is why all of our staff are specially trained and have at least 5 years of experience before climbing or operating equipment. Our team is dedicated to continuing education in order to stay on the leading edge of the arboriculture industry, so whether you need simple shrubbery trimming and shaping or something more complex such as removing an 80' tree from your back yard, we have the skills, people and tools to do the job correctly, safely, and efficiently. Progressive Tree Service is dedicated to providing our customers with the safest and highest quality of work at a fair price while preserving the beauty, health and integrity of the environment

Drought stress in trees doesn't work the way most people expect. It's not a water shortage that improves when it rains. ...
05/27/2026

Drought stress in trees doesn't work the way most people expect. It's not a water shortage that improves when it rains. By the time the visible damage appears, you're already two or three stages into a cascade.

Here's the sequence:

Stage 1 — Stomatal closure. Trees shut the leaf pores to stop water loss. Adaptive in the short term, but it also stops photosynthesis. The tree is trading energy production for survival.

Stage 2 — Leaf scorch and premature drop. Brown edges, early drop, mid-summer trees that look like they're in October. The tree is shedding leaf surface to reduce water demand. It's managing down, not recovering.

Stage 3 — Root dieback. Sustained drought kills fine feeder roots in the upper soil profile — the ones responsible for water and nutrient uptake. This damage is invisible but carries into next season. The tree starts the following spring already behind.

Stage 4 — Secondary pest and disease vulnerability. Bark beetles and borers target stressed trees. Fungal pathogens enter through drought-weakened defenses. That August pest problem? It often started as June drought stress.

What to do: deep watering at the drip line (not at the base), mulch to retain moisture and moderate soil temperature, and don't fertilize during drought — it increases water demand at the worst time.

For trees showing active stress signs, a deep root watering treatment delivers moisture directly to the feeder root zone and can be paired with a health assessment.

Memorial Day weekend is here — outdoor time, gatherings, yard activities, extended time outside under your trees. It's a...
05/24/2026

Memorial Day weekend is here — outdoor time, gatherings, yard activities, extended time outside under your trees. It's also the unofficial start of Chicago's peak storm season.

Before the weekend fills up, do a five-minute structural check of the trees over your yard and outdoor spaces:

— Large dead branches that are still attached. These are the ones that become projectiles in a 40 mph gust. They look inert until they aren't.
— Branch unions with visible cracks or peeling bark at the connection point.
— Limbs hanging at angles that don't match their normal position — something shifted.
— Any lean that seems more pronounced than it was at the start of spring.

Prioritize the zones directly above your patio, play area, outdoor dining space, and parked vehicles. Those are the target areas that turn a branch failure from a cleanup problem into an emergency.

If something looks wrong, move the activity zone and schedule an assessment. Trees don't give advance notice before failure. They hold until the load event — wind, rain, ice — and then they don't.

For anything urgent this weekend: 24-hour emergency response at (847) 530-1533.

For pre-summer assessments: schedule at the link. Serving Niles, Evanston, and the North Shore. Have a safe one.

This rule gets violated more than any other in suburban tree care: do not prune oaks between April and October.Oak wilt ...
05/21/2026

This rule gets violated more than any other in suburban tree care: do not prune oaks between April and October.

Oak wilt spreads through sap-feeding beetles that are drawn to fresh pruning wounds. These beetles are active April through early October. An open wound on an oak during this window is an active risk — the beetles introduce the fungus directly into the vascular system, and from there it spreads fast.

For red oaks, this can mean death in 4–6 weeks. Not months. Weeks. White oaks have some natural resistance, but they're not immune.

The disease also moves through root grafts between neighboring oaks of the same species. An infected tree can kill the oak 30 feet away through underground root connections — no beetle needed for the secondary spread.

Safe pruning window: late October through early March. Beetles are dormant. The tree is dormant. Risk is near zero.

Emergency situation in summer? Storm damage, a failed scaffold branch, something that can't wait? Prune what's necessary and seal every cut immediately with wound sealant or shellac. It doesn't eliminate the risk, but it reduces the exposure window.

Any arborist worth working with will flag this before scheduling your oaks in June. If they don't mention it, ask. The answer will tell you a lot about who you're dealing with.

We build oak pruning schedules around the safe window, without exception.

Removal isn't the only answer when a tree has a structural defect. For trees with real landscape value — large specimens...
05/18/2026

Removal isn't the only answer when a tree has a structural defect. For trees with real landscape value — large specimens, mature oaks, significant shade canopy — cabling and bracing is often the right intervention instead.

Here's how it works:

Cabling uses high-strength steel or synthetic cable installed between major scaffold branches or co-dominant stems. The cable limits extreme range of movement under wind or ice load without immobilizing the branch. Trees need movement for healthy trunk development — the system constrains the failure-risk movement, not the normal flex.

Bracing rods are threaded steel hardware installed through weak unions, cracks, or splitting stems. They provide direct resistance against the forces that cause union separation under stress. Bracing is usually paired with cabling.

Who's a good candidate: trees with co-dominant stems and included bark at the union, large specimen trees with long lateral scaffold branches, trees that have started splitting at a union but remain otherwise healthy in both stems, and mature trees where removal would be an irreversible loss that's hard to replace on a 50-year timeline.

This is a precision tool, not a catch-all. A tree in active structural decline isn't a cabling candidate — cabling buys time for a healthy tree with a mechanical weakness, it doesn't reverse disease or root failure. The assessment matters as much as the installation.

ISA-certified arborists know the difference. The hardware is simple. Knowing when to use it is the expertise.

June through August is peak storm season on the North Shore — and the trees most likely to fail during a storm are the o...
05/09/2026

June through August is peak storm season on the North Shore — and the trees most likely to fail during a storm are the ones that showed no obvious warning signs beforehand. That's not bad luck. It's a risk assessment that didn't happen before the conditions changed.

The structural defects that turn a moderate wind event into a property damage call:

— Co-dominant stems with included bark at the union. This is the single most common cause of major branch failure. Two stems growing at an acute angle with bark folded between them have no structural wood connecting them — they hold until a load event separates them.

— Dead scaffold branches still attached. They're invisible from below when surrounded by foliage but act like wind sails during a storm.

— Root zone compromise from construction or utility work in the last 3–5 years. Root loss doesn't show in the crown for years, but the structural anchoring is already reduced.

— Decay pockets near old pruning cuts or branch stubs — especially common in trees that were topped or improperly cut years ago.

A proper assessment isn't a visual scan from the street. It's close inspection of branch unions, root flare evaluation, and crown structure analysis relative to what's in the drop zone below.

The right time to do this is now — before schedules fill with emergency callouts in July. Options look very different in May than they do after something comes down.

Most urban trees are nutrient-deficient — and they don't show it until the decline is already advanced. Pale foliage, re...
05/06/2026

Most urban trees are nutrient-deficient — and they don't show it until the decline is already advanced. Pale foliage, reduced annual growth, early fall color, sparse crown density: these are late signals. The underlying problem usually started years earlier.

Deep root fertilization delivers nutrients where surface applications can't reach. Surface-applied fertilizer is intercepted by compacted soils and surrounding vegetation before it reaches tree feeder roots. The injection method — pressurized delivery at 8–12 inch depth — puts nutrients directly into the active root zone.

Urban trees on the North Shore deal with real obstacles: compacted clay soils, root zone competition from surrounding vegetation and surface runoff, interrupted natural nutrient cycling from storm water infrastructure. Standard surface application isn't built to address any of that.

After a proper deep root treatment, you typically see the response within one growing season: denser canopy, more vigorous new growth, improved resistance to drought stress and secondary infections. For trees already showing signs of decline, it can reverse a trajectory that would otherwise require removal within a few years.

Spring is the primary window — soil temps are rising and root activity is high. A secondary fall window exists for certain species.

This service works best as part of a broader health program, not as a one-time fix. We pair it with structural pruning and disease monitoring for the full picture.

Emerald Ash Borer has already changed the canopy across Chicago's suburbs permanently. If you have an ash tree, EAB is i...
05/03/2026

Emerald Ash Borer has already changed the canopy across Chicago's suburbs permanently. If you have an ash tree, EAB is in your area — that part isn't a question anymore. The question is what stage your specific tree is at and what can realistically be done.

Here's the progression: EAB larvae feed under the bark, cutting off water and nutrient transport. By the time you see the exterior signs — S-shaped galleries under peeling bark, D-shaped exit holes about pencil-eraser size, crown dieback starting at the top — the tree has already lost 30–50% of its vascular capacity. That's why the treatment window matters so much.

Early treatment works. Systemic insecticide injected directly into the trunk (emamectin benzoate) or applied to soil (imidacloprid) can protect ash trees for 2–3 years per cycle. Effectiveness drops sharply once crown loss passes 50%.

Not every ash is worth saving. A small tree in poor structural condition, or one that's already significantly compromised, may be a smarter removal candidate than a treatment investment. But a large, healthy ash in a prominent location? Almost always worth protecting if caught in time.

Watch for: thinning upper crown, sprouts emerging at the base (epicormic growth — the tree's stress response), woodpecker activity on the trunk (they're hunting the larvae), and bark cracking on larger specimens.

If you're not sure what you have, a professional assessment is the right first move.

May sits in a narrow sweet spot for tree trimming on the North Shore — and most homeowners don't take advantage of it.He...
04/30/2026

May sits in a narrow sweet spot for tree trimming on the North Shore — and most homeowners don't take advantage of it.

Here's the logic: trees have completed their initial spring flush by mid-May. New growth has hardened, the tree has tapped its stored energy from the prior season, and wound response is at its annual peak. Cuts made now callus over faster, reducing the entry window for boring insects and fungal pathogens.

Compare that to summer trimming. In July and August, heat stress is elevated, the tree is managing water aggressively, and wounds stay open longer in warm conditions. The window between a clean cut and an infected wound is much shorter in May than it is in the height of summer.

What's worth doing in May:
— Clearance pruning (branches near structures, power lines, driveways)
— Deadwood removal
— Crown thinning to open airflow before the dense summer canopy locks in
— Crossed limbs that rub and create wound entry points

One exception: go easy on oaks. The oak wilt beetle window is open, and any oak pruning cuts need to be sealed immediately.

For maples, lindens, elms, crabapples, and most other North Shore species — May is the window. Book now and your trees enter summer in the best structural shape possible.

Spring is the best time to assess winter damage — and the most important window to act. Trees that survived January on p...
04/27/2026

Spring is the best time to assess winter damage — and the most important window to act. Trees that survived January on paper may have taken serious structural damage that won't be obvious until leaves fail to emerge or a limb fails during a summer storm.

Five signs to check right now:

1. Dead branch tips that don't leaf out. Outer branch dieback while interior growth is normal points to winter desiccation or cold injury. Minor dieback can be pruned. Extensive crown dieback signals something deeper.

2. Frost cracks. Vertical splits in the bark, usually on the south or southwest face of the trunk. Rapid temperature swings cause these. They're entry points for decay fungi and boring insects.

3. Heaved root flare. Soil pushed up around the base? Root movement from freeze-thaw cycles in clay soil. A shifted root system means reduced anchoring.

4. Split scaffold branches. Large limbs that cracked under ice or snow load may still be attached and look fine — until they don't. Check the bark at major branch unions for separation or hidden cracks.

5. Delayed or uneven leaf emergence. One side bare while the other leafs out normally often means a vascular issue — disease, trunk damage, or root loss localized to that side.

Any of these warrant a professional look before the growing season accelerates. Waiting until summer means waiting until after the risk becomes active.

Oak wilt is one of the most destructive tree diseases in the Midwest — and one of the most preventable. The key is under...
04/24/2026

Oak wilt is one of the most destructive tree diseases in the Midwest — and one of the most preventable. The key is understanding exactly when the risk window opens and closes.

The fungus spreads primarily through bark beetles that are most active from April through July. These beetles are attracted to fresh pruning wounds. Once the fungus enters, it moves through a tree's vascular system fast — red oaks can die within weeks of infection. White oaks are more resistant but still vulnerable if wound exposure happens in peak beetle season.

Safe pruning window for oaks in the Chicago area: late October through early March. Beetle activity is dormant, fungal spore dispersal is minimal. Outside that window, the risk is real.

If an oak was recently pruned — by you, a contractor, or storm damage — and the wound is fresh, seal it with pruning paint now. This is one of the rare exceptions where sealant is actively recommended rather than avoided.

Watch for these warning signs: rapid browning from leaf margins inward, premature leaf drop starting at the crown top, or wilting that moves through entire branches within days. These are same-day call situations.

Early intervention makes the difference between a tree that survives and one that doesn't. The window matters — don't wait on this one.

Arbor Day lands this week — and it's a good reminder to give your trees a real look before the growing season takes off....
04/21/2026

Arbor Day lands this week — and it's a good reminder to give your trees a real look before the growing season takes off.

Chicago's climate doesn't forgive. Late frosts into May. Summer drought. Freeze-thaw cycles that crack soil and stress root systems all winter. Trees that looked fine in January may have taken real structural damage that won't be obvious until the growing season is already underway.

What a spring tree health assessment actually looks at: root zone condition after a hard winter, crown structure for dieback and frost cracking, vascular stress signals in the leaf emergence pattern, and early disease or pest indicators that become much bigger problems by midsummer if missed now.

Trees to prioritize this Arbor Day: any large deciduous tree that lost branches over winter, oaks that had wound exposure during their last pruning cycle, anything with a co-dominant stem or included bark union you've been watching.

Use this day as a reminder to actually assess your existing trees. Every tree on your property just came through a Chicago winter — spring is the right time to find out how it's doing before the season is fully underway.

Our ISA-certified arborists serve Evanston, Wilmette, and the broader North Shore. Schedule a tree health assessment at the link in the first comment.

Address

1124 Florence Avenue
Evanston, IL
60202

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm

Telephone

+18475301533

Website

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