FIELD NOTE · SUPPLEMENTAL SET
Fifty-two years from the specification to the crisis: Beverly Hills wrote its street trees down
ISSUEDJULY 19, 2026DRAWN BY THE NIGHTLY SWEEP
Beverly Hills sent a ballot to the property owners along Coldwater Canyon Drive with a return date of November 3, 2025, asking them what should go back where the Canary Island pines (Pinus canariensis) used to stand. The notice counts approximately forty vacant sites where those pines have been lost. The City's account of why is one clause: the species continues to struggle with performance issues related to drought and insect susceptibility. Nobody on that street picked the pine, and the document that put it there has been under revision since 1944.
That gap is the subject. A species goes onto a street in a document that takes a season to write and, in the case of the 1944 plan, ten years to implement, and the consequence of the choice arrives in front of a house whose owner had no part in either the writing or the planting and is on the hook for watering whatever goes back into the hole.
The City is unusually honest about this, which is what makes its paperwork worth reading.
In 1944 the City completed its first Street Tree Plan document and ran a removal and replacement program over the following ten years. Revisions came in 1957 and again in 1963. The 1963 Report on Long Range Street Tree Program, which the 2022 plan quotes, describes trees lining every street, and that is a sentence about how a city should look rather than a sentence about whether a given species can hold a parkway for the length of a human life.
The two are written in the same voice and filed in the same drawer. They do not behave the same way once something is in the ground.
The next revision was the Street Tree Master Plan of 1996, and by then the problem had a species name and a count: about three thousand American elm (Ulmus americana) and Arizona ash (Fraxinus velutina), senescent and infested. Fifty-two years separate the 1944 program from the plan that had to deal with them. Nobody in the room in 1944 was going to be in the room in 1996, and that is the ordinary arithmetic of this work rather than a failure of anyone's diligence. It is also why the revision intervals run twenty-six years, then twelve, then thirteen, then six, then thirty-three.
Six dates in ninety years, against species that were being asked to stand for longer than that.
It is not close. The plan puts full canopy replacement after a large removal at thirty to forty years, and fifty-six percent of the current inventory still sits in the young seven to eighteen inch diameter class, which is a City that has been replanting steadily and has not yet been repaid for any of it. Thirty-one percent of the inventory is middle aged or mature. The rest is somebody's watering problem for a while yet.
A tree in its second summer is still building the root system that has to carry it through every summer after, and the water it takes in that interval does not come from the specification. It comes from a hose in front of a house.
The 2022 plan says so plainly when it accounts for the replanting that followed 1996. Some streets progressed toward replacing the lost canopy and some did not; Idaho locust (Robinia ambigua 'Idahoensis') struggled to establish while Chinese flame thrived, and the plan allows that the establishment care given by private property owners could also have affected whether the new trees lived. That is the City conceding, in its own management plan, that the outcome of a species decision turns partly on a party that had no say in the input.
The plan sets out both sides and settles neither, which is the correct way to leave it. Keeping a declining signature tree standing holds neighborhood character and canopy in the near term, which is the only term the people on the street actually experience. Taking it out early avoids deferring the replacement into a year when temperatures are higher and the canopy being lost is worth more. Twenty years of partial removals splits the difference across a generation instead of answering the question.
Palms sit in the same shape. They are twenty percent of the inventory at 4,786 trees and 0.8 percent of the canopy cover, and the twenty year program contemplates removing three thousand of them, in a document that also says some palms should be preserved for their cultural and historic significance in the City and others for the economic value they generate from visitors. Both sentences are in one book, and the plan does not reconcile them.
For a landscape contractor the operative permit is not the street plan at all. Private property trees fall to Community Development under the tree removal regulations dated August 2004 at BHMC 10-3-2901 and following, and that removal permit is the filing a landscape contractor actually sees, often months before the parkway question in front of the same house is settled. A permit is required before damaging or removing a heritage tree of forty-eight inch trunk circumference measured at four feet six inches in a front or street side setback, or a listed native at twenty-four inches. Trimming that does not damage the tree is exempt, and a violation is a misdemeanor counted separately for each tree.
The infrastructure is on its own schedule underneath all of it. The City's consultant records that trenching for water main replacement, along with paving and curb and gutter work, will require removing a to-be-determined percentage of the roadside pines along Coldwater Canyon Drive, Loma Vista and San Ysidro, with the exact number set during pre-construction tree safety evaluations. So the count of what comes out is not a number in a plan. It is an outcome of a survey that has not happened yet, on trees that were specified before the pipe under them needed replacing.
Changing the species is not a design decision either. Replacing a street tree with something other than what has historically lined the street requires developing a new phase of the Street Tree Master Plan, and the ballot on the new species has to come back from more than fifty percent of affected property owners before a recommendation goes to the Public Works Commission and on to Council. Staff update the Commission monthly until that threshold is met.
Drought and insects do not wait for a quorum. Ballots move in meeting cycles, and the permit record for Beverly Hills will carry the front yard work going in around those parkways long before the parkways themselves are settled.
Coldwater Canyon has approximately forty empty holes while its phase gets written.
Somebody will drive out next spring with a truck, a stake kit and a hose bib key, set one tree into one of the forty or so holes, and water it through its first summer. The City's part ends after that one.
That gap is the subject. A species goes onto a street in a document that takes a season to write and, in the case of the 1944 plan, ten years to implement, and the consequence of the choice arrives in front of a house whose owner had no part in either the writing or the planting and is on the hook for watering whatever goes back into the hole.
The City is unusually honest about this, which is what makes its paperwork worth reading.
What 1932 put down and what the plans kept taking back off
Lot sales began in 1906, and the master plan under the subdivision was drawn by landscape architect Wilbur David Cook, Jr. for the original land developers, who set the three tiered structure of Hills, Flats and South that still decides how the City reads its own ground. The Urban Forest Management Plan, adopted by Council on February 8, 2022, records what the planting rule was: the City was planned with monoculture street plantings, the same species on both sides of the street for one or more blocks, and the plan names host specific pests as the risk that rule carries. In 1932 the short lived and failing species were pulled out and replaced with the street specific trees that became the signature, magnolia (Magnolia grandiflora), camphor (Cinnamomum camphora) and Canary Island date palm (Phoenix canariensis).In 1944 the City completed its first Street Tree Plan document and ran a removal and replacement program over the following ten years. Revisions came in 1957 and again in 1963. The 1963 Report on Long Range Street Tree Program, which the 2022 plan quotes, describes trees lining every street, and that is a sentence about how a city should look rather than a sentence about whether a given species can hold a parkway for the length of a human life.
The two are written in the same voice and filed in the same drawer. They do not behave the same way once something is in the ground.
The next revision was the Street Tree Master Plan of 1996, and by then the problem had a species name and a count: about three thousand American elm (Ulmus americana) and Arizona ash (Fraxinus velutina), senescent and infested. Fifty-two years separate the 1944 program from the plan that had to deal with them. Nobody in the room in 1944 was going to be in the room in 1996, and that is the ordinary arithmetic of this work rather than a failure of anyone's diligence. It is also why the revision intervals run twenty-six years, then twelve, then thirteen, then six, then thirty-three.
Six dates in ninety years, against species that were being asked to stand for longer than that.
The clock that stops at one year
Responsibility for a City tree in the parkway is split, and the split is the part a landscape crew runs into. The City owns the tree, selects the species, plants it, trims it, and may remove and replace it. The property owner is responsible for watering it and for clearing its fallen leaves and fruit. City establishment care runs for the first year, and the Urban Forest Management Plan's own Objective 5.4 recommends raising contracted watering to three years, which is the City telling itself in writing that one year is not the length of the establishment period.It is not close. The plan puts full canopy replacement after a large removal at thirty to forty years, and fifty-six percent of the current inventory still sits in the young seven to eighteen inch diameter class, which is a City that has been replanting steadily and has not yet been repaid for any of it. Thirty-one percent of the inventory is middle aged or mature. The rest is somebody's watering problem for a while yet.
A tree in its second summer is still building the root system that has to carry it through every summer after, and the water it takes in that interval does not come from the specification. It comes from a hose in front of a house.
The 2022 plan says so plainly when it accounts for the replanting that followed 1996. Some streets progressed toward replacing the lost canopy and some did not; Idaho locust (Robinia ambigua 'Idahoensis') struggled to establish while Chinese flame thrived, and the plan allows that the establishment care given by private property owners could also have affected whether the new trees lived. That is the City conceding, in its own management plan, that the outcome of a species decision turns partly on a party that had no say in the input.
The species chosen twice and scheduled for removal
The specification turns on itself here. Magnolia is the fifth most common tree in the City inventory at 1,215, London plane (Platanus X hispanica) is the second at 1,583, and the two together carry twenty-three percent of the City's canopy cover. The same 2022 plan states that magnolias and camphors are in decline from climate change and are among the species least likely to adapt, pressed by hotter temperatures, drought and the invasive shot hole borer. What it proposes is removing and replacing a portion of the vulnerable species each year across twenty years.The plan sets out both sides and settles neither, which is the correct way to leave it. Keeping a declining signature tree standing holds neighborhood character and canopy in the near term, which is the only term the people on the street actually experience. Taking it out early avoids deferring the replacement into a year when temperatures are higher and the canopy being lost is worth more. Twenty years of partial removals splits the difference across a generation instead of answering the question.
Palms sit in the same shape. They are twenty percent of the inventory at 4,786 trees and 0.8 percent of the canopy cover, and the twenty year program contemplates removing three thousand of them, in a document that also says some palms should be preserved for their cultural and historic significance in the City and others for the economic value they generate from visitors. Both sentences are in one book, and the plan does not reconcile them.
For a landscape contractor the operative permit is not the street plan at all. Private property trees fall to Community Development under the tree removal regulations dated August 2004 at BHMC 10-3-2901 and following, and that removal permit is the filing a landscape contractor actually sees, often months before the parkway question in front of the same house is settled. A permit is required before damaging or removing a heritage tree of forty-eight inch trunk circumference measured at four feet six inches in a front or street side setback, or a listed native at twenty-four inches. Trimming that does not damage the tree is exempt, and a violation is a misdemeanor counted separately for each tree.
What the fire zone did to the specification, decades on
The City's 2019 wildfire assessment, folded into the Urban Forest Management Plan on adoption in February 2022, puts pines on a list of trees prohibited for new planting north of Sunset Boulevard in the Very High Fire Hazard Severity Zone, and notes that Canary Island pine and Aleppo pine make up most of the genus there. There are 1,163 Canary Island pines in the City inventory, 4.79 percent of the whole. A species can be the historic character of a street and be barred from going back into it, and that is the same argument now running through Zone 0 across the state, arriving on Coldwater Canyon well after the trees it applies to were already in the ground.The infrastructure is on its own schedule underneath all of it. The City's consultant records that trenching for water main replacement, along with paving and curb and gutter work, will require removing a to-be-determined percentage of the roadside pines along Coldwater Canyon Drive, Loma Vista and San Ysidro, with the exact number set during pre-construction tree safety evaluations. So the count of what comes out is not a number in a plan. It is an outcome of a survey that has not happened yet, on trees that were specified before the pipe under them needed replacing.
Changing the species is not a design decision either. Replacing a street tree with something other than what has historically lined the street requires developing a new phase of the Street Tree Master Plan, and the ballot on the new species has to come back from more than fifty percent of affected property owners before a recommendation goes to the Public Works Commission and on to Council. Staff update the Commission monthly until that threshold is met.
Drought and insects do not wait for a quorum. Ballots move in meeting cycles, and the permit record for Beverly Hills will carry the front yard work going in around those parkways long before the parkways themselves are settled.
Coldwater Canyon has approximately forty empty holes while its phase gets written.
Somebody will drive out next spring with a truck, a stake kit and a hose bib key, set one tree into one of the forty or so holes, and water it through its first summer. The City's part ends after that one.