More trees with Emerald Ash Borer in Newtonville; EAB is likely present in all of Newton

NNHS ash trees on Elm Road

Add at least two, and presumably three more ash trees found to be infested with Emerald Ash Borer in Newtonville alone this summer. The most recent are a grove of three ash near the Elm Road entrance of Newton North High School. Two of the trees have at least one exit hole visible from the ground, and all three have thinning in the upper canopy.

Since this Fall 2016 article in the Newton Conservators newsletter about the first signs of EAB in Newton, there were occasional further discoveries: four large dead or dying ash trees on conservation land across from Mason-Rice, and a couple by the Newton Country Day School athletic field entrance on Centre Street.

From ground level, only found one exit hole on this NNHS ash. Infestations affect the upper canopy first.

But this summer is seeing a flurry of trees showing visible effects of infestation: thinning in the upper canopy, accompanied by an exit hole or two visible from ground level. (There would likely be many more exit holes in the upper canopy.)

A heavily infested ash on California Street at Nevada Street is the first we know about in Newton north of the Mass Pike.

California Street at Nevada

While it appears that the northeast section of Newton was the first area to become infested, other areas of Newton can be presumed to already have EAB present. Based on its flying range, protective treatment is recommended for ash trees within 15 miles of a known infestation. That radius includes all of Newton.

If you’re not sure whether you have an ash tree, watch the video above. (The only other opposite branching species that may be confused with ash is the box elder, a type of maple with compound leaves, but with notches, that when overlapped resemble a maple leaf.)

If you have an ash tree that you value and want to keep around, please check out, and consult an arborist from a good tree care company about treatment options. The most used treatment protocol involves trunk injections every other year. Not all ash trees will be worth saving, but for a large, healthy tree, the cost of treatment, even over many years, will likely be less than the cost of removal, and you will have the enjoyment of the tree.

Long term, there is some hope for a biological control, according to UMass Extension’s fact sheet. Four different parasitoid wasps have been approved for release in the U.S., and a very small percentage of ash in North America show signs of resistance to EAB. So perhaps there is a chance that genus Fraxinus will not become as rare as the American chestnut.

Epicormic shoots on California Street ash. They are common on stressed trees, but not exclusive to EAB-infested trees.

Exit holes on trunk of California Street ash


Relatively early stage infestation on Walnut Street, Newtonville. (1-2 exits holes visible from ground). If your tree looks like this, it’s probably worth trying to save it.

Scenes from our Spring 2016 Community Tree Plantings


Beethoven planting group_web

Posted this once and it disappeared! Here again are a few shot from our April plantings. We started with planting training on Beethoven Ave on April 9 and planted 11 trees, including seven berm trees alongside Richardson Field, the cost of which was contributed by Green Decade as part of their Earth Day celebration.

We plant mostly baMarc Welch_bare roots_webre-root trees, which retain more of their roots in the harvesting process, and are also easier to handle, being very lightweight, but they are only harvested twice a year, in mid-April, after the ground has thawed at the nursery near Buffalo, N.Y., and in November after leaves have dropped. Here, Director of Urban Foresty points out some new root growth.

Beethoven tree watering_web

The green bags you see on newly planted trees are for drip irrigation. They hold about 20 gallons of water and need to be filled once a week, spring through fall until leaves drop. With a TreeGator (or similar brand) you know the tree is getting 20 gallons; it’s not running off into the street as a sprinkler would.


April 23 was our main planting day, when we did most of the 84 new trees. We had cool weather and a light rain, very good for not letting the fine roots dry out during planting.

This was on Princess Ave near Wellington Park in West Newton. We’ve been using snow stakes wherever people are worried about snowplows or keeping trees visible, especially where there is no curbing.

Princess Rd muddy_web

Nate Cenis from Bartlett is a regular volunteer at our plantings.

NateCenis Rick & JAM_web



Preserve & restore the Newton Free Library parking lot tree canopy; don’t replace it with solar carports

Library trees center berm summer 2015

The following letter was sent to our members and friends, from Barbara Darnell, on behalf of fellow directors Penny Caponigro, Katherine Howard, Ron Joseph, Hal Lichtin, Julia Malakie, and Jack Wittenberg:

To our Newton Tree Conservancy members & friends,

This Monday, April 4, Newton’s City Council will vote on the potential installation of solar carports in the parking lot of the Newton Free Library. As proposed, the carports would require the removal of 15 parking lot trees, including an 80+-year old oak. We strongly object to this action.

To quote from a letter to the City Council from the Urban Tree Commission, “Because both trees and solar panels are contributors to climate improvement, they should not have to compete. Both offer special benefits to our environment: trees provide beauty, food and habitat for wildlife, carbon absorption and reduced storm water runoff; solar panels provide electrical power without CO2 emissions. Newton should balance both resources.”

The library parking area was designed in 1989 with 20 mature trees preserved from the undeveloped site. Most were lost over the years due to unapproved construction work and the City’s fading tree maintenance and planting budget. Eight replacement trees were planted only two years ago. We would like to see those trees grow to maturity to enhance the natural beauty of the heart of our city, which includes the Library and City Hall.

The Newton Tree Conservancy supports the City’s Sustainable Energy plan. We are in no way opposed to solar energy, which clearly has a role to play in climate improvement, and are much in favor of the City’s plan to install solar panels on building rooftops and especially at the Rumford recycling area, which do not require tree removals.

Our Library parking lot is the greenest public parking lot in Newton. We urge you to request that the City Council vote “No” on the installation of carports in the Library parking lot and that City instead finds alternate locations for solar panels, which are open and free of trees.

Please contact your City Councilors ASAP and before the Monday night vote, to express your views. Their contact information can be found on the Newton, MA website, and is attached.


Barbara Darnell, for the Board of the Newton Tree Conservancy

This attachment shows more views of the current parking lot, and how it would look with solar carports, according to Ameresco Solar, Inc., the company with whom the city would contract with to build and maintain the carports.

This is the contact list for Newton city councilors.

Since we sent this email, many people have thanked us for bringing this to their attention, and have sent us copies of the letter they wrote to their city councilors. We appreciate your effort, and hope the City Council will choose to preserve our Library parking lot’s trees.

Those bright yellow spots

Yellow leaf spots_crabapple

Those of you with crabapples may have noticed bright yellow spots like those pictured above appearing on leaves. Director of Urban Forestry Marc Welch thinks it’s the beginning stage of cedar apple rust, a common occurrence on crabapples and mostly a cosmetic issue, not a threat to tree survival. He recommends keeping up with weekly watering, and raking and disposing of leaves when they fall, to limit spread of the fungus.

6 September 2011--Cedar apple rust on Madison Ave. NTC crabapples. (Photo by Julia Malakie)

6 September 2011–Cedar apple rust on Madison Ave. NTC crabapples. (Photo by Julia Malakie)

Cedar apple rust is an interesting fungal disease because it requires two hosts to complete its two-year life cycle. Spores produced on cedar trees infect apples and crabapples, and vice versa. You can read more about it on the Missouri Botanical Garden and Cornell University websites, among others.

We’ve seen this before on our Newton Tree Conservancy crabapples. This photo from 2011 shows a later stage, the horn-like structure that grow on leaves.