The Trees of GovÂerÂnors Island: EffecÂtiveÂly ManÂagÂing an Urban Forest
Dec 16, 2021 9:21 pm
VolÂunÂteers from BlackÂstone plantÂiÂng trees on GovÂerÂnors Island; phoÂto by SarÂma Ozols.
Guest post by MalÂcolm Gore, Senior GarÂdenÂer at the Trust for GovÂerÂnors Island
EffecÂtiveÂly manÂagÂing the colÂlecÂtion of both hisÂtoric and new trees on GovÂerÂnors Island is critÂiÂcal to creÂatÂing a healthy, funcÂtionÂing, cliÂmate resilient ecosysÂtem that will surÂvive — and thrive — for years to come. In July 2021, the Trust for GovÂerÂnors Island an Urban and ComÂmuÂniÂty Forestry Grant by the New York State DepartÂment of EnviÂronÂmenÂtal ConÂserÂvaÂtion (NYS DEC) through the Urban and ComÂmuÂniÂty Forestry Grant ProÂgram that will help develÂop, among othÂer iniÂtiaÂtives, a ComÂmuÂniÂty ForÂest ManÂageÂment Plan for the Island.
In the sumÂmer of 2020, TropÂiÂcal Storm IsaÂias took out sevÂerÂal large trees on GovÂerÂnors Island and damÂaged many more. After cleanup was comÂpletÂed, the HorÂtiÂculÂture team at the Trust began to disÂcuss replantÂiÂng trees to replace the lost canopy and to add bioÂdiÂverÂsiÂty to the island through the introÂducÂtion of new species. MathÂews NielÂson LandÂscape ArchiÂtects were conÂtractÂed to creÂate a canopy plan for the HisÂtoric DisÂtrict on the North Island.
They began by conÂductÂing a surÂvey of existÂing trees and their conÂdiÂtion and longeviÂty, conÂsultÂing hisÂtoric Island plantÂiÂngs and maps meetÂing regÂuÂlarÂly with the HorÂtiÂculÂture team to disÂcuss which kinds of trees would do well in varÂiÂous locaÂtions. GovÂerÂnors Island is a truÂly sinÂguÂlar enviÂronÂment withÂin New York City, and care must be takÂen with respect to the charÂacÂter and landÂscape design of the Island’s sepÂaÂrate areas and their expoÂsure to a changÂing cliÂmate, includÂing risÂing sea levÂels and more intense storms.
The NYS DEC-supÂportÂed forÂest manÂageÂment project will conÂtinÂue the work underÂtakÂen by MathÂews NielÂson by surÂveyÂing all the trees on the Island and creÂatÂing a comÂpreÂhenÂsive forÂest manÂageÂment plan. This data is curÂrentÂly being colÂlectÂed and will supÂport the Trust’s efforts to conÂtinÂue adding new genusÂes and species of native trees to the Island’s unique urban forÂest to safeÂguard against a monoÂculÂture — ensurÂing that, in the future, no sinÂgle type of tree will be dominant.
A monoÂculÂture of landÂscape trees is danÂgerÂous because, if a new pest or disÂease arrives, it could potenÂtialÂly kill all the trees of a sinÂgle species and drasÂtiÂcalÂly alter the charÂacÂter of a landÂscape. For instance, in the mid- to late-20th cenÂtuÂry, many AmerÂiÂcan towns lost almost all of their canopy and street trees when Dutch Elm DisÂease swept through the UnitÂed States and killed most AmerÂiÂcan elms that had been plantÂed in rows across the counÂtry. The Trust’s ongoÂing forÂest manÂageÂment plan will be inteÂgral to the health of the trees on the Island and will help inform staff and visÂiÂtors alike of best pracÂtices to ensure all newÂly plantÂed trees will sucÂceed in their forÂevÂer homes on GovÂerÂnors Island.
The ComÂmuÂniÂty ForÂest ManÂageÂment Plan in Action
In Fall 2021, a corÂpoÂrate volÂunÂteer group from BlackÂstone plantÂed 40 of these new trees on the hisÂtoric North Island — a mornÂing of work that was a culÂmiÂnaÂtion of a year’s worth of careÂful prepaÂraÂtion by the HorÂtiÂculÂture team and an inteÂgral step in culÂtiÂvatÂing the Island’s diverse tree canopy. This enthuÂsiÂasÂtic group worked togethÂer with the team to remove turf, dig holes, amend the soil and, finalÂly, plant each tree with care and intenÂtion. Once the trees were plantÂed, proÂtecÂtive mulch and surÂroundÂing fences were added to preÂvent the roots from dryÂing out and the stems from being damaged.

The group was espeÂcialÂly keen to folÂlow best pracÂtices of plantÂiÂng trees. They were eager to learn and even more eager to dig holes and tear up turf, two horÂtiÂculÂturÂal activÂiÂties that many garÂdenÂers tend to dread. PlantÂiÂng 40 trees in a day may seem easy to those unacÂquaintÂed with the comÂplex terÂrain of GovÂerÂnors Island, but makÂing sure each tree is placed at the right depth, gets a propÂer allotÂment of mulch and is comÂpleteÂly straight can be quite difÂfiÂcult when many are being plantÂed at once.
The 40 trees plantÂed that day comÂprised 11 difÂferÂent species, sevÂen of which were not preÂviÂousÂly present in the HisÂtoric DisÂtrict at all. These new species make the canopy more resilient, proÂvidÂing difÂferÂent habiÂtats and food types to the myrÂiÂad insects and birds that visÂit and live on GovÂerÂnors Island, and they will delight visÂiÂtors in all seaÂsons for years with their stateÂly strucÂture and varÂiÂous flower types. Five new magÂnoÂlias — two CucumÂber magÂnoÂlias and three SweetÂbays — will be espeÂcialÂly vibrant in the upcomÂing spring seaÂsons, while our new colÂlecÂtion of Witch Hazels will pop with colÂor in the winÂter when everyÂthing else is grey and dormant.
By pairÂing these new trees and colÂors with the hisÂtoric archiÂtecÂture of GovÂerÂnors Island, the HorÂtiÂculÂture team hopes to creÂate a beauÂtiÂful blend of old and new that can inspire New YorkÂers to reviÂtalÂize their own comÂmuÂniÂties with new plantÂiÂngs of native trees, shrubs and othÂer plants for years to come.