Fact Sheets

Common Tree Diseases in Minnesota

Fact sheets in PDF format:

Anthracnose Fact Sheet

Apple Scab Fact Sheet

Armillaria Root Rot Fact Sheet

Bur Oak Blight Fact Sheet

Cedar-Hawthorn Rust Fact Sheet

Cytospora Canker Fact Sheet

Dothistroma Needle Blight Fact Sheet

Dutch Elm Disease Fact Sheet

Fireblight Fact Sheet

Oak Wilt Fact Sheet

Rhizosphaera Needle Cast Fact Sheet

Sphaeropsis Shoot Blight and Canker

Verticillium Wilt Fact Sheet

About Rainbow

Since we began in 1976, we have built our business by being on the cutting edge of what gets the best results. Dedicated to scientifically proven methods, we are continually educating ourselves in order to provide the most effective solutions to you. Rainbow is 100% Employee-Owned.

Rainbow Divisions

Full-service Tree Care
www.rainbowtreecare.com

Full-service Lawn Care
www.rainbowlawncare.com

Full-service Pest Control
www.rainbowpestexperts.com

Have used Rainbow for tree removal and pruning four times, including for a very large and complicated basswood tree that’s close to our house. Rainbow has been able to preserve this tree over 10 years on a 3-year pruning schedule. Excellent service, skilled and experienced teams that know what they’re doing.

Michael S.

Once again, Rainbow Treecare sets a high bar and then delivers service above the raised bar. Their crew was out today to trim a large tree in our backyard (Uptown zone) and when they completed the project, our yard was cleaner than it was before they arrived. The crew is truly well schooled in customer service and Rainbow Treecare remains our go-to for any and all tree services. If you are interested in consistent quality, contact them as you will pat yourself on the back for making the connection!

June M.

The Rainbow crew did an excellent job cleaning up our yard. Since we had a black walnut tree go down, we invited an older gentleman who was interested in wood turning come over; the crew went out of their way to help him load several pieces of the trunk into his car. We will gladly use this company again.

TheNavyGuy1943

Very informative regarding options to treat for emerald ash borer. Fair prices for services.

dave s

Large tree leaning against the deck, hanging over the house. appraisal and site inspection provided by John S. Removal by the "nite crew" Tom, lead; Sam and Randi able body assistants. Excellent job removing, not one branch hit the house. Always ask for the Nite Crew

Gary H.

Rainbow Tree Care and Jeff Rick (Consulting Arborist), have provided us with the finest of service in caring for our trees over the years. Jeff's advice, attention to detail and immediate follow-up on post servicing issues are much appreciated! A great company with great employees!

Judith D.

Rainbow Treecare did an outstanding job for me recently in taking care of a tree in my back yard that had split and dropped half of the treetop into my yard and onto my neighbor's power, phone and cable lines. Once Xcel Energy had removed branches that touched the electric lines, Rainbow made a point of getting out to take care of all the rest of the damage right away. My tree and yard posed interesting, almost overwhelming, challenges, both in terms of working around all the wires involved, ease of access, and disposing of all debris after trimming the tree as much as it needed. Kudos to the arborist, Russell Kennedy, who worked diligently with me to make this all happen and to the crew, who worked very hard and very creatively to take care of all the obstacles presented by this project. Work was all done well with no additional damage to my or the neighbor's property and everything was cleaned up the way I wanted before they left. Very happy to work with a company and crews that are so responsive, helpful and devoted to providing excellent service. Will definitely use them again for other work.

James S.

Rainbow Treecare has consistently provided us with prompt, courteous, and expert service. In particular, Jesse Belter has given us excellent advice and service throughout the years.

Brad C.

Excellent job, staff very easy to work with. Thank you Franklin

Mike S.

Over the years Rainbow Treecare has performed everything from stump grinding to tree fertilization and insect control (including EAB) I trust the experts each time they have a suggestion concerning the health of my trees. They are extreemly knowledgeable and professional. There isn't anything they can't do! I reccomend Rainbow Treecare to anyone who has need of their services!Sincerely, Mike Spinner Victoria, Mn

Benjamin G.

Responsive and professional.

Charles L.

Your personnel did an excellent jpob and informed on how and what they were going to do..you have made a life time customer

Lindsey W.

Rainbow Tree was very helpful and educational in helping our Business keep our trees healthy!

JND K.

I received Emerald Ash Borer tree care from Rainbow Treecare. The City of Columbia Heights recommended this provider and I'm completely satisfied with their service. I'm thankful City was proactive for protecting the ash trees in this area!

Marc G.

Best ever no project to big. Highly recommended

Liz S.

Edit: I didn't use Rainbow's services, but I'm editing what was a negative review to become a positive one. I had an unsavory experience with customer service, but received a call from the owner within minutes expressing that he'd listened to the call and agreed that there's a big coaching opportunity available for the employee in question, and that had he been in my shoes he would have been significantly put off as well. I appreciate the responsiveness and the desire to do good business!

Betty K.

I asked Rainbow to prune a Crabtree that I had in my backyard. First they had an arborist visit and look at what I had and get my feedback for what I was looking for in the pruning.The crew arrived today with "Q" taking the lead. there were 2 others, I think one of their names was Trent. These were wonderful, customer oriented tree trimming professionals. who did a fabulous job and my tree is beautiful.thank you Rainbow!!

Tim B.

They were awesome. Our arborist, Sarah Burgess, is super knowledgable, patient and understanding. She gave us lots of insights about our (very small) forest area, and the Minnetonka area in general as it relates to trees. She gave us the knowledge and confidence to think about trees long term. We also had a budget to work within and she helped us figure out the best approach.The team that came to do the work was polite, happy to explain their approach, and left the yard better than they found it. We'll be bringing Rainbow back for future trimming, disease prevention and removals.

Cheryl S.

The 3 people who trimmed our trees at our property in Prior Lake today were outstanding! They worked hard and steadily for hours and cleaned up afterward. They arrived wearing masks until they started working in the trees. They left our trees with healthy growth and opening up our view of the lake. THANK YOU!!

Nathan R.

Cut down two large Elms in front yard that were dying. Had both down and hauled away while I was at work. Stump removal was about a month later. I talked with the worker, Reggie. He was very nice and enthusiastic for his job. It was hot and humid that day. He put wood between the machinery and grass to protect it. He described what he was doing and the procedure. He explained the aftercare and how to start growing grass. Hopefully you get Reggie. Cleaned up very nice as well.

Kirsten K.

Received many bids on a tree we had bolted together. Wild ride of pricing. Rainbow was able to work with us and our neighbors to have their power turned off for the day-something we didn't think about- in order to take the tree down. Their communication and clean up is top notch. I'd always recommend them.

Mike J.

Sam was awesome. Professional and informative

mitch G.

Easiest company to work with for tree care. They gave great advise and were very responsive. I have a willow tree that looks 10 time better after they pruned it and they were able to treat an ash tree of mine. Would recommend calling them for any tree needs!

Kelsey S.

Excellent all the way around. Eric Lundstrom, our area's arborist, has been to our home multiple times over the last few years and provided excellent insights and recommendations. The team that has come to our house to provide the recommended services take an unprecedented level of care in treating the trees and clean up. We just finished another service today and are very satisfied.

Tammy N.

Professional services with friendly staff

Kelsie B.

I had several stumps removed that were close to my house. Reggie did an excellent job grinding them down quickly and neatly. One was loose enough in the dirt that he went ahead and pulled out the roots too so that was nice. He also cleaned up some of the weeds that were near the unwanted stumps which I appreciated. He is very friendly too! I'm glad I went with Rainbow Treecare. I liked the online proposal/acceptance/invoice system too.

Joe T.

We contracted with Rainbow to consult with us about our trees. Nick Kantola, one of their arborist, came to our home and provided recommendations. We were impressed with his expertise. He took the time to respond to all of our questions and advised us on how we could do some of the work. He also made several recommendations on what Rainbow could do for us along with the costs. We accepted all of his recommendations.A team from Rainbow came to our home today to complete all of their accepted recommendations for trimming our trees. We were highly impressed with the work that Andrew, Joseph, and John did. They were both professional and knowledgeable. The trees look much better now. This team also did a terrific job of cleaning up all the branches and leaves from our yard. We definitely recommend Rainbow Tree Care to others!

Tom L.

Rainbow sent out their arborist to evaluate our Ginko. I was impressed by her depth of knowledge, her broader consideration for the neighborhood and environment of the Ginko and how she presented options clearly with risks and benefits. I don't remember her name but I will remember Rainbow for my tree work.

Heather H.

We've been using Rainbow Tree for a year and they've been professional, knowledgeable and helpful. They communicate well and are timely and efficient. They've taken really good care of our trees and we've been really happy with their service.

Alex A.

These fellas were professional, timely, respectful of our lawn & property, thorough, and - my favorite part - genuinely seemed to be having a good time at their job. (the tree trimmers looked like climbers & we're swinging/hanging/moving around like professional rock climbers who knew their equipment and capabilities well). What a difference that makes. They have my repeat business.

Emily A.

Fast service for our EAB treatment and great communication.

Sheer

I did not actually receive tree cutting service from them yet, but I must praise them for being very attentive. They have good service, I'll definitely go with them once I do decide to get the service.

Danielle M.

Very knowledgeable! Will definitely be reaching back out when the time comes for future treecare!

Sandra M.

Easy to deal with. Very smooth process for obtaining estimate and services. Reasonable pricing.

Sean G.

Professional tree surgeon came out and inoculated our tree and left detailed documentation. Price seemed fair and now we have a safe ash tree!

Michael H.

Wonderful service! Our tree looks beautiful, it’s niceto have professionals do such a hard job in such cold temperatures. A very polite three person team started at 8 in the morning at a freezing 1° above zero.I certainly would never of done that, so kudos to your team, everything was all cleaned up and taken away in three hours. I highly recommend your company to everyone needing tree care pruning services.

Georgianna F.

We had a dangerous tree that had to be removed. The tree trimming department came within a week and cut enough to make the tree stable until Jesse (our arborist) could help us make the final plans for removal. The removal itself was done smoothly and with the same cleanup we have come to expect from Rainbow.We chose to wait until spring to have the stump removed and were contacted by the scheduler to find the most convenient time for us and the company. On removal day, Cole arrived on time and spent almost 4 hours carefully grinding the stump down and smoothing the site. He was very careful to protect our other plants and our sprinkler system.We could not be happier with the entire process and will make Rainbow our first (and likely our only) call when we have any other tree issues.

Alex L.

Great service always helpful with all tree care questions. Better service than other guys that have a name with the word Jet in them.

joseph A.

Top notch tree care service

Michael A.

Would highly recommend! Team was very responsive from quoting tree trimming, responding to questions and getting a quote together. Team who cut down trees was super safe and followed through on quote exactly. Cleaned all trimming including raking up all leaves/branches and hauled away it all very quickly. Would highly recommend to all my neighbors and friends!

Steve B.

Rainbow removed a tree and ground the stump for me. The service and personnel were very professional and efficient. Cleanup was excellent, especially for the grinding (Thank you, Reggie!). There was nothing left on the lawn or street. They even fluffed up the lawn with a blower, where machines had flattened the grass. Excellent!

Schemendra L.

Used for EAB protection on two ash trees. Very well priced in Brooklyn Park, MN area. Flawless communication before and prompt, as promised service. No complaints.

Darlene K.

I have used Rainbow Treecare for several years. They have beenso good in explaining to me what has to be done. They do awonderful job taking care of my trees. I know that what they dotaking care of my trees is done right. The people are also veryfriendly. They do a good job also cleaning up after they are done.

Rick L.

They came out in the middle of Feb. where we had a ton of snow on the ground and was still able to get the job done and done well (trimming and tree removal). Come April I got a knock on my door as they showed up to pick up all the twigs that had fallen but which they couldn't clean up because of the snow at the time they did the job.I was blown away when they came back. I thought that was something I'd have to deal with. Will keep coming back.

Gerry L.

Eric Lundstrom and Jocelyn “Josey” Anderson,The pin oak treatment, chlorides therapeutic treatment, that Josey applied to our tree last fall appears to have had a very positive effect. The oak tree has leaved out nicely, with all branches having leaves. The test will be on how green the leaves will get later this spring and how green they will stay this summer.As always, Eric, thank you for your professionalism, knowledge and guidance! And Josey for all your hard work!Gerry L.

James A.

Excellent work by a sharp crew.

cgarrity

Charles Kastern , an arborist for Rainbow Treecare, offered a combination of astute tree knowledge and a sincere caring and compassion about our property and us as customers . We were facing both root and pest issues with our 11 spruce trees. Our trees were an investment due to how large and mature they were at planting and very important to us to provide us privacy. The trees had been planted to deeply by the builder’s landscaping company and the issue was the roots were not thriving and lower branches were growing into the soil. We also had a new tree mite issue this past year that further compromise the health of our trees . Charles offered a solid plan for all the issuers at a reasonable cost .Due to our crazy summer schedule we had to reschedule service twice and he was more then flexible with phone calls back to us and rescheduling with his team conducting the service . I honestly felt as though we were family to him regarding how much he cared. We would highly recommend Charles Kastern and Rainbow Tree care for any of your tree related issues . They have been amazing and our trees are looking great .

Catherine G.

We had a crew ( Hannah, Jack, Ally and Jeff, led by Paul) who treated our elm trees to prevent Dutch Elm disease. They arrived on time, wore masks (because of Covid 19), and worked non stop. Paul kept us in the loop each step of the way. You couldn’t ask for better service. We have our elm trees treated, as recommended, every three years. Rainbow crews are always a pleasure to work with.

Mike S.

Rainbow does great work and I trust them 100% with my trees. Reggie and Emmanul are particularly awesome.

Molly N.

I would highly recommend Rainbow Tree Care services to anyone who values their home and landscaping. This is our first experience with them and we were impressed with how effiecient and friendly they are!

James F.

Reggie did a fantastic job on the stump removal. Very careful about his work and made sure the clean up was perfect. It is so nice to see someone care about doing a good job!

Mary O.

Stump grinding work done today at my house. Excellent job! Exceeded my expectations. I would highly recommend this very competent crew. Good communicators; they are very careful with surrounding plants; extremely polite. Did a thorough job of cleaning up after the work was done. Their prices are very competitive and, in fact, was the lowest bid I had for the work. Great value for the cost. THANKS

Alex S.

The Arborist Rainbow sent was extremely knowledgeable, he recommended treatment where needed and gave advice for diy care where it wasn't. Emerald ash borer protection service was scheduled quickly and for a reasonable price - great experience!

Maja R.

Great work!

Hallie M.

Rainbow Tree Care did an excellent job clearing deadwood from very tall trees. Everything was cleaned up beautifully at the end of the day. I strongly recommend this company.

Dona M.

Amazing, professional service. We had a weird situation where the day they were coming to trim our trees, one of our trees fell down. This tree was not scheduled to be cut down so they didn't have the team ready to haul a tree away. They worked with me and our arborist went above and beyond for us to help get the tree cut up and moved out of or neighbors lawn. Would highly recommend. They are so professional and understanding.

Daniel M.

We recently had our Ash tree injection done for the European Ash Bore. The technician, Zach was great! He has wonderful customer skills as well!

Minnesota S.

Great experience working with Rainbow Tree Care. The City of Woodbury contracted with Rainbow to offer Woodbury residents a discount on treating ash trees for the Emerald Ash Borer. Good choice! "Charles," the arborist, originally came out and looked at all the trees because we were also interested in some trimming. Such a nice guy and he really knew his trees. We received a quote within one day, detailed as to exactly what they would be doing and a map of our yard with the exact trees that would be worked on.The office at Rainbow kept in touch, letting us know about when we would be scheduled, and then a specific date and time. The crew came out and trimmed our trees. Great guys! Then a crew came out and picked up all the branches with a special machine.Lastly, we were informed that the technician to treat the ash trees would be out in the next few days, which also happened. Every aspect of working with Rainbow Tree Care was pleasant. The prices were reasonable and we really appreciated the City of Woodbury recommending such a great company. We will continue to call them for any lawn needs we have, and have already recommended them to others in the community.

Bruce P

We had several of our trees trimmed today, and what a wonderful job Rainbow did.It all started with a consultation with their Arborist, Jesse Belter. And he even came over this morning to give the details of the job to the crew.Mariah, Aaron, and Evan made a great team and worked together to make the work go efficiently. They were good communicators and were quick to offer suggestions and advice on how to make our property look its best. The Trees in our yard now look great.And what blew me away was how meticulous they were about cleaning up. Our yard never looked so good.Great job Rainbow !!

Nita H.

Rainbow Tree Care did a fabulous job removing the large tree limb from my garage which happened as a result of a snow storm. Al Olson has been a great help to us over the years with our trees and got us on the schedule quickly. The crew members who did the job were great - professional, courteous and efficient. I would enthusiastically recommend Rainbow for any and all tree care!

Deanna Kim B.

Rainbow is the best. Dan Bird replied right after a storm blew down a huge spruce. You can see the tree fell just past my neighbor's chimney. It took out large lilac bushes, too. Rainbow marked my utility lines before grinding the stump. (Other companies regularly omit this step.) We cut back the lilac, which will grow back, and laid sod. Thanks to Rainbow for quickly and professionally clearing out the mess for a reasonable fee!!!

The S.

Excellent all around experience. Reggie did a great job with the stump grinding.

Kris P.

I signed up for a free consultation about treating an ash tree in my yard, and while he was at it Nick happily walked the property with me to answer questions about other trees. He was very knowledgeable and clearly has a passion for what he does. The amount of information I got out of a conversation that cost me nothing was incredible!

Karen H.

Second time using Rainbow Tree to treat our trees. Very satisfied with our service. Tyler was friendly and thorough. We plan to continue to use this company to treat our Ash trees.

Cathy S.

Love the pizza!

Ryan C.

They were prompt, knowledgeable and professional. Reggie the gentleman that came to grind down our tree stumps was the friendliest guy and was really helpful in answering all of my questions. Thanks Rainbow & Reggie!

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Fact Sheets

General Tree Health & Maintenance

Common Tree Insects in Minnesota

Common Tree Diseases in Minnesota

About Rainbow

Rainbow Divisions

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