Mature, woody Rosemary shrub – Detracts from look of a property. See prognosis at the bottom*

How to know when you should replace your plants

How do your plants look?  Are they attractive, healthy and vigorous?  There are a few factors that deterrmine how they look.  

  • Your plant’s maturity.  Are they in the beginning or end of their lifecycle?
  • Are they planted in the right place?  This will determine how well they thrive.
  • Maintenance is important.  But maintenance cannot compensate for plants that are past their prime or are planted in the wrong place.  We have seen numerous examples of plants in the wrong place that, in spite of diligent management, will never thrive.  

Knowing Your Plant’s Useful Lifecycle is the first step

With the right maintenance practices some plants can live for many years.  Ten, twenty, thirty and long beyond that.
Others have a finite lifespan at which time they will need to be replaced.

Do you have a shrub that looks awful? 
Woody? Has it stopped producing foliage?  Like the rosemary depicted above? Can your plant can be saved with renovative pruning?  Or is it time to replace it? 
An ugly looking plant reflects badly on your property.
You will need to either rejuvenate or replace it.

Know which options your plants need depends on their type. 
Don’t spend your valuable time resurrecting a dying plant when it is better to replace it with a plant or plants that enhance your property.  Conversley, replacing mature plants cost money.  Make sure you know whether your plants can be rejuvenated.

Be knowledgeable.  Then plan.
Below are some examples of plants types and their expected lifespan.

Primrose – an Annual

Annuals
Their lifecycle is typically one year.  And, they bloom consistently.

Black-eyed Susan’s – a Biennial

Biennials
Typically they complete their lifecycle in two years.

Yarrow – Sample Perennial

Perennials
Plants that live for more than two years.
Horticulturalists categorize perennials as to woody or herbaceous.
A woody perennias are trees and shrubs.
Herbaceous perennials are non-woody plants that that flower during a specified time period and usually die back in the fall.
Their lifecycle will depend on plant type and their environment

How to Know When Your Plant Has Completed its Lifecycle

A simple answer is – it becomes unsightly.
Some plants that become woody and stop producing foliage should be removed.
There are some exceptions – or plants that can be revived.

Below are some examples of plants with a finite lifespan

 

Ceanothus Julia Phelps

Ceanothus has an average lifespan of ten years. At the very most – fifteen years. You can tell when it needs to be removed when the plant becomes sparse and it looks unsightly. Pruning regularly to remove older shoots will help extend their life. 

 

Cistus

Cistus’ lifespan is approximately ten years.  You will know know when it is time to replace your Cistus (Rock Rose). Because it will become very woody and will produce less and less flowers.


Below are some examples of Perennials with a longer lifespan
They can be rejuvendated with appropriate pruning

Photinia

Photinia is usually grown as a hedge for screening purposes. A moderate grower. Reaches maturity in about 12 years. They can live for fifty years – with good care. Pinch and lightly prune 4-5 /year for encourage density.  One way of rejuenvating them is to cut back the entire shrub.  Another way is to cut back in stages.

 

Privet

Privets are grown as trees or heges for screening.  They have a long lifespan. Some report 20-40 years. Fast growers, they are hardy and need regular pruning. Renovate by cutting entire plant down to 6 – 12 inches off the ground.

Planning to Optimize Your Plants’ Lifecycle

Know what to expect at every stage of their lifespan

The first five years

Jerry Goodspeed, a horticulturalist for Utah State University says that in the first five years of a landscape, plants grow and fill in their assigned area. 

After ten years

Goodspeed says plants may become overgrown.

  • Overcrowding may become a problem.
  • You can tell if they are in decline when they appear leggy.  Hard pruning can restore vigor on some.
  • Start evaluating each plant on a case by case basis as some may need replacing.
  • If your irrigation was installed at the same time as your plants were installed, you may be wasting water. 

Manage Plant Growth 

  • Plants compete for nutrients, water and sunlight.  Some do not survive.
  • When trees mature its larger canopy may block sunlight from a neighboring plant making its removal necessary.
  • Long term tree care. Routine pruning and fertilization are important for the health of your trees.  They are an important part of your asset.  With proper maintenance they will last for many years. 
  • For shrubs that are crowding another plant.  A healthier fix than shearing is to selectively remove plants that are crowding each other.

*Mature woody Rosemary (Rosmarinus officinalis)

Unfortunately, this poor Rosmarinus should be replaced.  One of our GGI resident experts, Paul Swanson says, “they do not respond well to hard pruning.” I can guarantee that given Paul’s thirty plus years of experience, that is the last word on it. 

 

Mature, woody Rosemary shrub – Detracts from look of a property. See prognosis at the bottom*

How to know when you should replace your plants

How do your plants look?  Are they attractive, healthy and vigorous?  There are a few factors that deterrmine how they look.  

  • Your plant’s maturity.  Are they in the beginning or end of their lifecycle?
  • Are they planted in the right place?  This will determine how well they thrive.
  • Maintenance is important.  But maintenance cannot compensate for plants that are past their prime or are planted in the wrong place.  We have seen numerous examples of plants in the wrong place that, in spite of diligent management, will never thrive.  

Knowing Your Plant’s Useful Lifecycle is the first step

With the right maintenance practices some plants can live for many years.  Ten, twenty, thirty and long beyond that.
Others have a finite lifespan at which time they will need to be replaced.

Do you have a shrub that looks awful? 
Woody? Has it stopped producing foliage?  Like the rosemary depicted above? Can your plant can be saved with renovative pruning?  Or is it time to replace it? 
An ugly looking plant reflects badly on your property.
You will need to either rejuvenate or replace it.

Know which options your plants need depends on their type. 
Don’t spend your valuable time resurrecting a dying plant when it is better to replace it with a plant or plants that enhance your property.  Conversley, replacing mature plants cost money.  Make sure you know whether your plants can be rejuvenated.

Be knowledgeable.  Then plan.
Below are some examples of plants types and their expected lifespan.

Primrose – an Annual

Annuals
Their lifecycle is typically one year.  And, they bloom consistently.

Black-eyed Susan’s – a Biennial

Biennials
Typically they complete their lifecycle in two years.

Yarrow – Sample Perennial

Perennials
Plants that live for more than two years.
Horticulturalists categorize perennials as to woody or herbaceous.
A woody perennias are trees and shrubs.
Herbaceous perennials are non-woody plants that that flower during a specified time period and usually die back in the fall.
Their lifecycle will depend on plant type and their environment

How to Know When Your Plant Has Completed its Lifecycle

A simple answer is – it becomes unsightly.
Some plants that become woody and stop producing foliage should be removed.
There are some exceptions – or plants that can be revived.

Below are some examples of plants with a finite lifespan

 

Ceanothus Julia Phelps

Ceanothus has an average lifespan of ten years. At the very most – fifteen years. You can tell when it needs to be removed when the plant becomes sparse and it looks unsightly. Pruning regularly to remove older shoots will help extend their life. 

 

Cistus

Cistus’ lifespan is approximately ten years.  You will know know when it is time to replace your Cistus (Rock Rose). Because it will become very woody and will produce less and less flowers.


Below are some examples of Perennials with a longer lifespan
They can be rejuvendated with appropriate pruning

Photinia

Photinia is usually grown as a hedge for screening purposes. A moderate grower. Reaches maturity in about 12 years. They can live for fifty years – with good care. Pinch and lightly prune 4-5 /year for encourage density.  One way of rejuenvating them is to cut back the entire shrub.  Another way is to cut back in stages.

 

Privet

Privets are grown as trees or heges for screening.  They have a long lifespan. Some report 20-40 years. Fast growers, they are hardy and need regular pruning. Renovate by cutting entire plant down to 6 – 12 inches off the ground.

Planning to Optimize Your Plants’ Lifecycle

Know what to expect at every stage of their lifespan

The first five years

Jerry Goodspeed, a horticulturalist for Utah State University says that in the first five years of a landscape, plants grow and fill in their assigned area. 

After ten years

Goodspeed says plants may become overgrown.

  • Overcrowding may become a problem.
  • You can tell if they are in decline when they appear leggy.  Hard pruning can restore vigor on some.
  • Start evaluating each plant on a case by case basis as some may need replacing.
  • If your irrigation was installed at the same time as your plants were installed, you may be wasting water. 

Manage Plant Growth 

  • Plants compete for nutrients, water and sunlight.  Some do not survive.
  • When trees mature its larger canopy may block sunlight from a neighboring plant making its removal necessary.
  • Long term tree care. Routine pruning and fertilization are important for the health of your trees.  They are an important part of your asset.  With proper maintenance they will last for many years. 
  • For shrubs that are crowding another plant.  A healthier fix than shearing is to selectively remove plants that are crowding each other.

*Mature woody Rosemary (Rosmarinus officinalis)

Unfortunately, this poor Rosmarinus should be replaced.  One of our GGI resident experts, Paul Swanson says, “they do not respond well to hard pruning.” I can guarantee that given Paul’s thirty plus years of experience, that is the last word on it. 

 

Mature, woody Rosemary shrub – Detracts from look of a property. See prognosis at the bottom*

How to know when you should replace your plants

How do your plants look?  Are they attractive, healthy and vigorous?  There are a few factors that determine how they look.  

  • Your plant’s maturity.  Are they in the beginning or end of their life cycle?
  • Are they planted in the right place?  This will determine how well they thrive.
  • Maintenance is important.  But maintenance cannot compensate for plants that are past their prime or are planted in the wrong place.  We have seen numerous examples of plants in the wrong place that, in spite of diligent management, will never thrive.  

Knowing Your Plant’s Useful Lifecycle is the first step

With the right maintenance practices some plants can live for many years.  Ten, twenty, thirty and long beyond that.
Others have a finite lifespan at which time they will need to be replaced.

Do you have a shrub that looks awful? 
Woody? Has it stopped producing foliage?  Like the rosemary depicted above? Can your plant can be saved with renovative pruning?  Or is it time to replace it? 
An ugly looking plant reflects badly on your property.
You will need to either rejuvenate or replace it.

Know which options your plants need depends on their type. 
Don’t spend your valuable time resurrecting a dying plant when it is better to replace it with a plant or plants that enhance your property.  Conversley, replacing mature plants cost money.  Make sure you know whether your plants can be rejuvenated.

Be knowledgeable.  Then plan.
Below are some examples of plants types and their expected lifespan.

Primrose – an Annual

Annuals
Their lifecycle is typically one year.  And, they bloom consistently.

Black-eyed Susan’s – a Biennial

Biennials
Typically they complete their lifecycle in two years.

Yarrow – Sample Perennial

Perennials
Plants that live for more than two years.
Horticulturalists categorize perennials as to woody or herbaceous.
A woody perennias are trees and shrubs.
Herbaceous perennials are non-woody plants that that flower during a specified time period and usually die back in the fall.
Their lifecycle will depend on plant type and their environment

How to Know When Your Plant Has Completed its Lifecycle

A simple answer is – it becomes unsightly.
Some plants that become woody and stop producing foliage should be removed.
There are some exceptions – or plants that can be revived.

Below are some examples of plants with a finite lifespan

 

Ceanothus Julia Phelps

Ceanothus has an average lifespan of ten years. At the very most – fifteen years. You can tell when it needs to be removed when the plant becomes sparse and it looks unsightly. Pruning regularly to remove older shoots will help extend their life. 

 

[caption id="attachment_3073" align="alignleft" width="300"] Cistus

Cistus’ lifespan is approximately ten years.  You will know know when it is time to replace your Cistus (Rock Rose). Because it will become very woody and will produce less and less flowers.


Below are some examples of Perennials with a longer lifespan
They can be rejuvendated with appropriate pruning

Photinia

Photinia is usually grown as a hedge for screening purposes. A moderate grower. Reaches maturity in about 12 years. They can live for fifty years – with good care. Pinch and lightly prune 4-5 /year for encourage density.  One way of rejuenvating them is to cut back the entire shrub.  Another way is to cut back in stages.

 

Privet

Privets are grown as trees or heges for screening.  They have a long lifespan. Some report 20-40 years. Fast growers, they are hardy and need regular pruning. Renovate by cutting entire plant down to 6 – 12 inches off the ground.

Planning to Optimize Your Plants’ Lifecycle

Know what to expect at every stage of their lifespan

The first five years

Jerry Goodspeed, a rejuvenated for Utah State University says that in the first five years of a landscape, plants grow and fill in their assigned area. 

After ten years

Goodspeed says plants may become overgrown.

  • Overcrowding may become a problem.
  • You can tell if they are in decline when they appear leggy.  Hard pruning can restore vigor on some.
  • Start evaluating each plant on a case by case basis as some may need replacing.
  • If your irrigation was installed at the same time as your plants were installed, you may be wasting water. 

Manage Plant Growth 

  • Plants compete for nutrients, water and sunlight.  Some do not survive.
  • When trees mature its larger canopy may block sunlight from a neighboring plant making its removal necessary.
  • Long term tree care. Routine pruning and fertilization are important for the health of your trees.  They are an important part of your asset.  With proper maintenance they will last for many years. 
  • For shrubs that are crowding another plant.  A healthier fix than shearing is to selectively remove plants that are crowding each other.

*Mature woody Rosemary (Rosmarinus officinalis)

Unfortunately, this poor Rosmarinus should be replaced.  One of our GGI resident experts, Paul Swanson says, “they do not respond well to hard pruning.” I can guarantee that given Paul’s thirty plus years of experience, that is the last word on it. 

 

Mature, woody Rosemary shrub – Detracts from look of a property. See prognosis at the bottom*

How to know when you should replace your plants

How do your plants look?  Are they attractive, healthy and vigorous?  There are a few factors that deterrmine how they look.  

  • Your plant’s maturity.  Are they in the beginning or end of their lifecycle?
  • Are they planted in the right place?  This will determine how well they thrive.
  • Maintenance is important.  But maintenance cannot compensate for plants that are past their prime or are planted in the wrong place.  We have seen numerous examples of plants in the wrong place that, in spite of diligent management, will never thrive.  

Knowing Your Plant’s Useful Lifecycle is the first step

With the right maintenance practices some plants can live for many years.  Ten, twenty, thirty and long beyond that.
Others have a finite lifespan at which time they will need to be replaced.

Do you have a shrub that looks awful? 
Woody? Has it stopped producing foliage?  Like the rosemary depicted above? Can your plant can be saved with renovative pruning?  Or is it time to replace it? 
An ugly looking plant reflects badly on your property.
You will need to either rejuvenate or replace it.

Know which options your plants need depends on their type. 
Don’t spend your valuable time resurrecting a dying plant when it is better to replace it with a plant or plants that enhance your property.  Conversley, replacing mature plants cost money.  Make sure you know whether your plants can be rejuvenated.

Be knowledgeable.  Then plan.
Below are some examples of plants types and their expected lifespan.

Primrose – an Annual

Annuals
Their lifecycle is typically one year.  And, they bloom consistently.

Black-eyed Susan’s – a Biennial

Biennials
Typically they complete their lifecycle in two years.

Yarrow – Sample Perennial

Perennials
Plants that live for more than two years.
Horticulturalists categorize perennials as to woody or herbaceous.
A woody perennias are trees and shrubs.
Herbaceous perennials are non-woody plants that that flower during a specified time period and usually die back in the fall.
Their lifecycle will depend on plant type and their environment

How to Know When Your Plant Has Completed its Lifecycle

A simple answer is – it becomes unsightly.
Some plants that become woody and stop producing foliage should be removed.
There are some exceptions – or plants that can be revived.

Below are some examples of plants with a finite lifespan

 

Ceanothus Julia Phelps

Ceanothus has an average lifespan of ten years. At the very most – fifteen years. You can tell when it needs to be removed when the plant becomes sparse and it looks unsightly. Pruning regularly to remove older shoots will help extend their life. 

 

Cistus

Cistus’ lifespan is approximately ten years.  You will know know when it is time to replace your Cistus (Rock Rose). Because it will become very woody and will produce less and less flowers.


Below are some examples of Perennials with a longer lifespan
They can be rejuvendated with appropriate pruning

Photinia

Photinia is usually grown as a hedge for screening purposes. A moderate grower. Reaches maturity in about 12 years. They can live for fifty years – with good care. Pinch and lightly prune 4-5 /year for encourage density.  One way of rejuenvating them is to cut back the entire shrub.  Another way is to cut back in stages.

 

Privet

Privets are grown as trees or heges for screening.  They have a long lifespan. Some report 20-40 years. Fast growers, they are hardy and need regular pruning. Renovate by cutting entire plant down to 6 – 12 inches off the ground.

Planning to Optimize Your Plants’ Lifecycle

Know what to expect at every stage of their lifespan

The first five years

Jerry Goodspeed, a horticulturalist for Utah State University says that in the first five years of a landscape, plants grow and fill in their assigned area. 

After ten years

Goodspeed says plants may become overgrown.

  • Overcrowding may become a problem.
  • You can tell if they are in decline when they appear leggy.  Hard pruning can restore vigor on some.
  • Start evaluating each plant on a case by case basis as some may need replacing.
  • If your irrigation was installed at the same time as your plants were installed, you may be wasting water. 

Manage Plant Growth 

  • Plants compete for nutrients, water and sunlight.  Some do not survive.
  • When trees mature its larger canopy may block sunlight from a neighboring plant making its removal necessary.
  • Long term tree care. Routine pruning and fertilization are important for the health of your trees.  They are an important part of your asset.  With proper maintenance they will last for many years. 
  • For shrubs that are crowding another plant.  A healthier fix than shearing is to selectively remove plants that are crowding each other.

*Mature woody Rosemary (Rosmarinus officinalis)

Unfortunately, this poor Rosmarinus should be replaced.  One of our GGI resident experts, Paul Swanson says, “they do not respond well to hard pruning.” I can guarantee that given Paul’s thirty plus years of experience, that is the last word on it. 

 

San Francisco Street Tree Maintenance Implementation Schedule

San Francisco Street Tree Maintenance Implementation Schedule

The passage of Proposition E last November, was welcome news for San Francisco property owners.
There is, however, a lengthy start up period as San Francisco’s street tree maintenance implementation doesn’t begin until 2019.
Depending on the type, health or age of the tree, waiting until that time could be problematic.

Consider That Trees Should be Evaluated Annually

It is ideal to have an Arborist evaluate a tree’s condition and advise if pruning is necessary.
Generally, some trees may need annual pruning. Others bi-annually and others an “as needed” basis.

Reasons for pruning a tree.

  • Maintain its health
    • Reduce risk of failure from dead or weak branches
    • Improve tree structure
    • Save a storm or wind damaged tree
  • Safety
    • Provide clearance
    • Mitigate risk that weak branches could fall
  • Other reasons

    • Improve aesthetics
    • Manage flower or fruit production

San Francisco’s Responsibility – A snapshot

Effective as of July 1st

San Francisco Street Tree Maintenance Responsibility Includes
Maintaining all San Francisco street trees within The City limits
Any sidewalk repair due to tree root damage
Any injuries and property damage resulting from failure to maintain the trees

Street Tree Maintenance Implementation Schedule Order of Priority
First – trees in decline or that pose safety threats. This work is expected to last two years.
Routine pruning schedule will be posted July 2018
Routine pruning will not start until 2019
Trees will be subsequently scheduled for pruning every 3-5 years.

Exclusions
Any tree pruning requests from The City prior to July 1st. The property owner is responsible for that work.
Sidewalk repair not due to tree roots.

San Francisco’s Urban Forest Vision

Proposition E, the ordinance describing The City’s street tree maintenance program is Phase I of an overall vision for growing San Francisco’s Urban Forest.
It was a collaboration of SF Public Works, and Friends of the Urban Forest
Trees were inventoried and placed on a map

Friends of the Urban Forest highlights their goals as

  • Increase The City’s street trees by 50%. There are currently 125,000 street trees.
  • Improve maintenance efficiency and effectiveness
  • Ensure a more equitable distribution of trees throughout San Francisco’s neighborhoods

If You Choose to not Wait Until 2019 for Routine Street Tree Pruning

Guidelines haven’t been formalized.
You can have your trees evaluated and/or schedule work without opting out
. 

The City only asks for information that assures them that your Arborist conforms to ISA standards. 

It can be sent in an email that includes

  • Name of the Arborist
  • Description of work and location
  • A statement that asserts that the work will meet ISA standards

Gardeners’ Guild is consulting with clients and non-clients whose trees have not been tagged but want work done now.
Call us if you have questions about tree care. (510) 439-3700.
SF Department of Public Works will also answer your questions.
(415) 554-6700
sfpublicworks.org/trees

 

San Francisco 2017 Street Tree Ordinance Simplified

San Francisco Street Trees – Example

What the ordinance is

  • Shifts responsibility of street trees from property owner to the City of San Francisco
  • Sidewalks damaged by trees will also the City’s responsibility (see photo below)
  • Measure E on November 2016 ballot. 80% SF voters approved it.
  • Measure E was the result of pressure from property owners and Friends of the Urban Forest.

Sidewalk damage as a result of street trees

Start date of change: July 1, 2017

Street trees defined:

  • A tree planted in the public right-of-way. In other words, trees on sidewalks adjacent to a property

Who is affected

  • Commercial and residential property owners and managers

What Property Owners Need to Know

  • A permit will be required for tree planting that would be in the public right of way
  • They can continue to maintain street trees by “opting out”. There is an “opt-out” application.
  • Street tree ordinance only applies to trees within the City limits
  • A property owner who has received a tree pruning request from the City will still be responsible for that
  • Property Owners can view their tree(s) on the Urban Forestry map
  • Each tree has been inventoried and placed in 3 categories relative to their condition.

 When – Plan and Timeline

  • First – High Priority Projects
    • Damaged trees located in the primary path of travel. See map for priority 1 & 2
    • Bus stops, schools, senior centers, health centers in pedestrian throughway zones
  • Then The City begins catch up on the backlog of deferred tree pruning throughout.
  • Public Works estimates:
    • It could take 3 years for this to be completed
    • A regular cycle of routine pruning will start in 2019.
  • Trees to be pruned on a 3-5 year cycle. SF Public Works will post the schedule in July 2018.

Cost

$19 million dollars*

No new taxes

*the cost comes out of the City’s general fund.

 Exceptions

  • Sidewalks not damaged by trees are the property owner responsibility
  • If a property owner has already received a notice to address an issue with a street tree, they are responsible for that request.

For more information

(415) 554-6700 or www.sfpublicworks.org/trees