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Japanese Beetle

Japanese Beetles and Shipping Plants

The Japanese beetle can cause extensive damage to nurseries, seedbeds, orchards, field crops, landscape plants, and home gardens. Adult beetles skeletonize leaves, feed heavily on flowers, and consume developing fruits. They are known to feed on more than 300 plant species including roses, blueberries, grape vines, fruit trees, and many garden vegetables.  Japanese beetle grubs live in the soil and primarily feed on the roots of turf grass and ornamental plants.


What has changed?

For the past several biennia, Oregon's Japanese beetle eradication efforts have been funded through one-time allocations from the Oregon Legislature, using funds outside of the ODA's base budget. During the 2025 legislative session, the bill that would have continued this funding did not pass. Because no funding was approved for the next biennium, the ODA will not be able to continue Japanese beetle eradication operations in 2026.

Without a funded Japanese beetle program, which includes statewide trapping, surveillance, and treatment, Oregon will no longer be recognized as actively managing the Japanese beetle populations. As a result, Oregon is at risk of losing its pest-free status. When this happens, other western states that are currently considered free of Japanese beetle will apply their quarantine requirements to plants shipped from Oregon. These measures are intended to prevent the spread of Japanese beetle into unaffected states.

Japanese Beetle State Categories

The U.S. Domestic Japanese Beetle Harmonization Plant (JBHP) helps prevent the spread of Japanese beetles through the movement of nursey stock and regulated materials. States are divided into four categories, depending on their regulatory status for Japanese beetle. Shipment regulations are based on the category of the shipping state and the receiving state.

Category 1 - Uninfested, and Japanese beetle is regulated

Category 2 - Uninfested or partially infested

Category 3 - Partially or generally infested

Category 4 - Pest is unlikely to establish / not known to be infested




New Requirements

If you are shipping a regulated article to a Category 1 or 2 state, you will need to:

  • Enter into a Compliance Agreement with the ODA
  • Employ approved treatments and/or approved trapping
  • Apply for a Phytosanitary Certificate or Certificate of Quarantine Compliance (CQC) for shipments


Regulated Articles

  • Plants with roots and soil 
  • Grass sod
  • Soil, compost, or growing media that is not commercially packaged
  • Any article that could harbor Japanese beetle eggs, larvae, or adults
Exempted articles include: bareroot plants free from soil or media, bulbs, corms, tubers, and rhizomes without soil attached.


To learn more about how to ship plants to Category 1 and Category 2 states, please review the details below.

The Japanese Beetle Harmonization Program (JBHP)


​The JBHP was developed by the National Plant Board as a framework to protect unifested states, while providing shippers with consistent certification requirements. ​


Link to the National Plant Board JBHP site​

The JB regulatory status map visualizes all 50 states and Canadian territories, coding them as Cat 1, 2, 3, or 4. This map is updated annually. Regulatory status is determined by the National Plant Board. The JB regulator status map for Canada is also available.
 

Oregon's Category Status

While Oregon has historically be classified as a Cat 1 state, in the absence of a state Japanese beetle program, Oregon will likely be re-classified as Cat 2 or 3. This is pending final determination by the NPB, and the ODA is actively working with the NPB to expedite the evaluation process.


Oregon nurseries shipping plants with roots, soil, or growing media to Category 1 or 2 states/areas must follow strict production and certification standards to protect pest-free regions. Regulated articles are subject to phytosanitary measures to meet import requirements of receiving states. Whether a receiving state is Category 1 or 2, will dictate the exact requirements. These nurseries must have a Compliance Agreement with the ODA to be eligible for certification.​


Certification Standards​

​The options listed in the JBHP are the default standards that most states follow. However, the JBHP is not a federal quarantine, and does not override individual state regulations.​ To learn more about treatment options and state regulations that vary from the JBHP, please read through the drop-downs below.


Link to the JBHP manual​
​​​​


Shipment Options to Category 1 States


To qualify for shipment into a Category 1 state, nurseries must meet one of the approved pathways and enter into a compliance agreement with the ODA. The adult flight season for JB is June 1 – September 30 and is non-negotiable. Regulated articles must be safeguarded from JB during the flight season. 
 

Production in a Protected Faci​​lity

Plants maintained in a state approved screened greenhouse or structure during the flight season. Must be potted in sterilized soil or potting media. The facility must be inspected annually by the state.
 

Production Du​ring a Pest-Free Window

Rooted plants must be grown, finished, and shipped outside the adult flight period: October 1 – May 31. 
 

Application of Approved Treatments

Treatment with an ODA-approved insecticide under supervision by a state official before shipment or conducted under a signed compliance agreement. Treatments may be applied by nursery staff or an approved pest control company. 
 

Negative Trapping/Survey Verification

Nursery must demonstrate pest-free status through an approved trapping survey that is conducted on the nursery property during the entire adult flight season. In addition, 1-mile buffer area around the nursery must also be trapped. Traps must be regularly monitored by regulatory authorities throughout the entire season. If one or more beetle is caught or found on a plant via inspection, treatments will be required prior to shipment.  Nurseries may contract with an approved pest control company.  
 

Shipped Bare root

Plants are shipped bare root, free from soil or growing media. Free from soil means plants with less than the amount of soil or growing media that can harbor any life stage of Japanese beetle (egg, pupa, or larva). Some states define free from soil or growing media larger than ½ inch.​

​​​​​​​​​​​


Shipment Options to Category 2 States


To qualify for shipment into a Category 2 state, nurseries must meet one of the approved pathways and enter into a compliance agreement with the ODA. The adult flight season for JB is June 1 – September 30 and is non-negotiable. Regulated articles must be safeguarded from JB during the flight season.
 

​Application of Approved Treatments

Treatment with an ODA-approved insecticide under supervision by a state official before shipment or conducted under a signed compliance agreement. Treatments may be applied by nursery staff or an approved pest control company.
 

Negative Trapping/Survey Verification​

Nursery must demonstrate pest-free status through an approved trapping survey that is conducted on the nursery property during the entire adult flight season. Traps must be placed and regularly monitored by regulatory authorities throughout the entire adult season. If one or two beetles are detected across all traps, the nursery might be able to keep its pest free status. This is at the discretion of the receiving state.  Delimiting survey is required the following year (i.e. additional trapping around the positive trap location). If delimitation yields no JB finds, the nursery can be considered pest-free again. If more than two beetles are detected in either the initial or delimiting survey, the site is considered infested. Nurseries may contract out that work to an approved pest control company.
 ​

Field Grown Nursery Stock Accreditation Program

Applies to balled & burlapped, field-potted plants from nurseries within an infested area. Requires regular soil sampling (Sept – May) and mitigation if JB larvae are recovered. Certification not possible if more than one JB larvae is found. Other requirements include maintaining weed-free zones around plantings and treatments.
 

Containerized Nursery Stock Accreditation Program

All containers must: be potted in approved growing media or sterilized media; containers must be kept on barrier to prevent JB infestation; certified lots must be clearly marked and separated; and apparently free of weeds. Grasses and sedges are not eligible for this option. 
 

Sod Shipment Requirements

Permissible if sod originates from site free of JB through trapping program. Alternatively, if sod originates from sites under a compliance agreement which requires: treatment for JB on peripheral of farm, removal of JB host plant species from the immediate growing areas and treatment of the sod, and visual inspection at time of harvest as well as time of shipment. ​​
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Treatment Options

​For Japanese beetle certification of plant material according to the Japanese Beetle Harmonization Plan. All treated product must be safeguarded from re-infestation during the flight season. Chemical options are summarized below.


Pesticide Options

​​​The JBHP has a table listing active ingredients and products that have been agreed upon among the states. Not all of these are registered for use in Oregon, and not all of the products registered for JB in Oregon are on the approved JBHP table. Please review the attached Excel document to see lists of JB treatments in Oregon and those which are also found in the JBHP list.


 

Detailed list of Active Ingredients for Oregon and the JBHP

Please download this file to view all of the pesticide lists. 

JB Treatment table.xlsx


​There are four tabs in this Excel file:
  1. Summary of active ingredients for JB registered in Oregon
  2. All active ingredients and combinations for JB registered in Oregon
  3. JBHP Pesticides for Category 1 States
  4. JBHP Pesticides for Category 2 States

Important links


​To identify if a product is registered for use in Oregon, please use this search engine:

Pesticide Information Center OnLine (PICOL):

Chemical Treatments table for JBHP:

​​​​


Treatment options for Category 1 States​

​1. Dip treatment intended to kill larvae (grubs) in containers or B&B​​

Only acceptable for material in containers that are 12" in diameter or smaller. B&B material of the same size limit can also be dip-treated, but only if the soil is non-clay. It is presumed that most soils in Oregon will not be suitable for this treatment due to clay content.

  • The rooted portion of the container or ball must be completely submerged in pesticide solution for a minimum of 2 minutes or until complete saturation occurs, as indicated by the cessation of bubbling.
  • The ambient temperature must be at least 50F at time of dip.
  • Upon removal from solution, the plants must be allowed to drain according to label directions.
  • During JB flight season (June through Sept.) dip treatments are only good for 2 weeks of certification. If more time passes, an additional treatment would be required. 
  • Treatments performed outside of the flight season are suitable for certification until the time of the next flight season.​

2. Drench treatments for containers to target eggs and first instars of JB
This is considered a preventative treatment. It is only acceptable for material in containers that are 12” in diameter or smaller. Potting media must have started clean (never previously used in agricultural production) and contain no mineral soil or sand.
  • Plants grown in field soil then potted into soilless container substrates are not eligible.Plants must be treated prior to JB flight season and certification expires after 16 weeks.
  • Plants must be treated prior to JB flight season and certification expires after 16 weeks.
  • The goal is to completely drench the surface of the potting media while at the same time limiting run-off through leaching from the bottom of containers. It is recommended to use 1/5 of the container volume as an application rate per container.
  • Treated material must be maintained on an impervious barrier.

3. Media (granule) incorporation for containers to target eggs and first instars of JB.
This is a preventative treatment prior to potting up. It is only acceptable for plants being potted up into containers 12” in diameter or smaller. Potting media must start clean (never previously used in agricultural production) and contain no mineral soil or sand.
  • Plants grown in field soil then potted into soilless container substrates are not eligible.
  • Plants being stepped up into treated media must first be treated by drench or dip to clean up any remaining untreated potting media attached to their roots
  • Granular insecticide must be thoroughly mixed into batches of potting media prior to potting up.
  • Finished plants should be watered at least 2 times prior to shipment.
 
4. Methyl Bromide Fumigation
This option would provide certification for nursery stock of all sizes and media including soil. However, pesticide label limits and plant susceptibility to harm make it an unlikely option.
 
5. Adult Beetle Mitigation
During flight season between June 1 and September 30th, nurseries are responsible for ensuring that clean stock does not become infected by adults. The JBHP outlines critical control points to monitor. Insecticides that target adults are provided in the JB-labeled product list, to be used for certification if adults are present. There are different insecticides for use on plant material and container (truck/trailer) spaces.


 

Treatment options for Category 2 States​

**Note: New Mexico is not included in this, they have unique requirements**


1. Any treatment that allows for certification to Category 1 states is also suitable for certification to Category 2 states.
 
2. Dip treatment intended to kill larvae (grubs) in containers or B&B. 
Acceptable for nursery stock in containers and B&B plants that are 32” in diameter or smaller.

  • The rooted portion of the container or ball must be completely submerged in pesticide solution for a minimum of 2 minutes or until complete saturation occurs, as indicated by the cessation of bubbling.
  • The ambient temperature must be at least 50F at time of dip.
  • Upon removal from solution, the plants must be allowed to drain according to label directions.
  • During JB flight season (June through Sept.) dip treatments are only good for 2 weeks of certification. If more time passes, an additional treatment would be required. 
  • Treatments performed outside of the flight season are suitable for certification until the time of the next flight season.
 
3. Pre-Harvest Soil Surface Treatments
Field grown material of any size may be harvested and certified from fields that are treated prior to harvest in the months of May through July.

  • Insecticide must be applied to rows in bands that extend six (6) inches wider than actual root ball diameter to be dug. Do not allow bands in adjacent rows to overlap.
  • Vegetation should be mowed to a height of 3 inches or less before application. Do not mow until after sufficient irrigation or rainfall has occurred.
 
4. Field Grown Nursery Stock Accreditation Program (possibility that treatment would be required)
This is a compliance agreement program that allows for certification of field grown material to Category 2 states. 

  • The program requires the maintenance of a weed-free zone around field plants as well as soil sampling to monitor for beetles.
  • Insecticides could be used in this program for treatment of larvae and adults and these are found in the JB-labeled product list.
 
5. Shipments of sod (lawn or turf-grass) 
It is possible to ship sod to Category 2 states with compliance agreement. Certification would likely involve the use of both adulticide treatment around periphery of the sod farm and larval treatments of the sod. 
Insecticide options are found in the JB-labeled product list.
 
6. Adult Beetle Mitigation
During flight season between June 1 and September 30th, nurseries are responsible for ensuring that clean stock does not become infected by adults. The JBHP outlines critical control points to monitor. Insecticides that target adults are provided in the JB-labeled product list, to be used for certification if adults are present. There are different insecticides for use on plant material and container (truck/trailer) spaces.​​



What is a quarantine and how does it affect me? 


A quarantine is a federal or state legal regulation established to prevent the introduction and/or spread of harmful insects, diseases, invasive weeds, soils or other pests that could cause ecological, economic or social impacts to the environment or agricultural industries.

Regulatory agencies use a science-based Pest Risk Analysis (PRA) process to evaluate potential plant health threats and determine what actions are needed to prevent the introduction, establishment, or spread of pests and diseases.

Quarantines are not new. Many states across the United States have had long-standing quarantines for Japanese beetle and other invasive pests, often in place for decades. These quarantines have historically applied to states where the pest is established or under active management. 

What is new is that Oregon nurseries are now more directly affected as shippers. As Japanese beetle detections have occurred in Oregon, other states that are considered pest-free or have strict management programs are applying their existing quarantine requirements to plant material shipped from Oregon. In other words, the quarantine rules themselves have not changed, Oregon's nursery shippers are now subject to these rules.

Quarantines can have operational and financial impacts on nurseries that ship or receive plants across quarantine boundaries. For this reason, it is important for nurseries to understand shipping restrictions, notification requirements, and inspections that may apply to their operations.

Nursery businesses are encouraged to work closely with their state nursery inspectors to ensure compliance and to help reduce disruptions to their operations.

What is a Compliance agreement and what does it do? ​


A compliance agreement (CA) is a formal agreement with a regulatory agency that allows a nursery to ship plants under specific plant-health requirements. By signing a CA, the nursery agrees to follow certain required practices that help prevent the spread of pests or diseases.

The agreement places responsibility on the nursery to follow these practices consistently. While this allows nursery inspectors to issue shipping certificates without observing every step in person, ODA continues to monitor compliance through inspections, audits, and record reviews to ensure the nursery is operating under an approved compliance agreement.

What are pre-notifications and when do I use them?


States may require nurseries to pre-notify their Department of Agriculture (or other regulatory agency) before shipments of quarantined plants enter their state. Pre-notification requirements can vary slightly by state, so shippers should be aware and confirm each destination state's specific requirements. These pre-notifications typically include emailing a shipping list and the associated CQC or phytosanitary certificate with the appropriate additional declaration (AD) indicating how the shipment meets import requirements. These documents are issued to nurseries by the ODA for shipments that meet all quarantine requirements. 

States that currently require that pre-notifications of shipments are sent to them before the shipment arrives include: 
                  
California, Colorado, Idaho, Montana, Nevada, Utah, and Washington
 
California
​Email the County Ag Office (contact information link)​
Montana:
Pre-notification must be sent 48 hours in advance to agr@mt.gov. Use the statement, "This notification is in accordance with Montana Quarantine MTQ-2013-01"


What is the difference between a phyto and a CQC? How do we get one?


A phytosanitary certificate (phyto) and a Certificate of Quarantine Compliance (CQC) are both official regulatory documents issued by the ODA, typically after an inspection is conducted by an ODA inspector.  They are both designed to accompany shipments of regulated material and verify quarantine compliance but differ from one another in several important ways.
 
Phytosanitary Certificates (phytos)
 
​What is a phyto?
A phytosanitary certificate, or phyto, is issued for each individual shipment of plants. It may be required for domestic or international shipments, depending on the destination.

How much does a phyto cost?
For licensed nurseries:
  • State phyto: $25 per shipment
  • Federal phyto: $31 per shipment
Unlicensed entities may also apply for a phyto but will be charged inspector time and mileage, in addition to the standard certificate fee.

Can one phyto be used for multiple shipments?
No. Each shipment requires its own phyto. Phytosanitary certificates may not be copied or reused for multiple shipments.

How do I apply for a phyto?
Applications must be submitted through the USDA’s Phytosanitary Issuance and Tracking System (PCIT): PCIT log-in page

If you do not currently have a PCIT account, please contact your ODA nursery inspector for assistance getting started. The USDA also has a training guide to help you navigate PCIT at this link: PCIT initial set-up guide
 
Certificates of Quarantine Compliance (CQCs)
 
What is a CQC?
A CQC is a document issued by an ODA inspector for inter-state shipments. Once an inspector has confirmed that specific nursery stock meet all inter-state and Federal quarantines, they can issue a CQC to accompany shipments.

How much does a CQC cost?
CQCs do not have a specific cost and are funded through nursery license fees. If you have an active nursery license, your CQC will not cost you any money. Like a phyto, unlicensed entities can apply for CQCs but will be charged for inspector time and mileage.

Can one CQC be used for multiple shipments?
A CQC may be valid for a specific set of plants and/or a specific time range, as determined by a state plant regulatory official. A CQC may be copied and used for multiple shipments during its validity period.

How do I apply for a CQC?
Contact the ODA nursery inspector assigned to your region. They will talk with you about requirements to be eligible for a CQC and arrange a time to come to your site and inspect the plants and relevant records. 
 
If you have questions about obtaining a phyto or a CQC, please contact your ODA inspector. You can determine who your nursery inspector is through this link: ODA Nursery Inspector contact information​

What are the soil/growing medium options for the JBHP?


Approved growing media must be free of soil and made from clean materials that have not previously been used to grow plants or for other agricultural purposes. The media must also be free of plant pests and handled in a way that prevents all life stages of Japanese beetles from being introduced.

Examples of approved growing media include:
  • Bark products (pine or hardwood bark)
  • Peat or sphagnum
  • Perlite, vermiculite, pumice, or volcanic cinder
  • Expanded or baked clay pellets
  • Rock wool
  • Recycled paper products
  • Ground coconut husk
  • Processed plant byproducts (such as rice, cocoa or coffee hulls)
  • Synthetic materials (such as styrofoam beads, floral foam, or synthetic sponge)
  • Commercially processed sand
  • Solid rooting materials (e.g. “Oasis Strips” and “Rubber Dirt”)
What growing media is not allowed?

The following are not considered approved growing media:
  • Field soil or native soil
  • Reused or previously used potting media
  • Media containing unprocessed organic debris
  • Compost or manure
  • Media that has been stored or handled in a way that allows exposure to pests, soil, or standing water
Growing media that does not meet these standards may not be eligible for certification under Japanese beetle quarantine requirements.

What happens if a single Japanese beetle is found at an Oregon nursery?


If a single Japanese beetle is detected at an Oregon nursery, the nursery immediately loses its free-from status and can no longer use negative trapping data to certify shipments for the remainder of that shipping season. The nursery must use alternative certification options allowed under the Japanese Beetle Harmonization Plan (JBHP).

These options include:

  • ​Approved chemical treatments, such as dip, drench, or granular incorporation
  • Approved production systems, such as certified Japanese beetle-free greenhouses or screenhouses
  • Other JBHP-recognized certification pathways accepted by the destination state

Are there container size limits?​
Container size limits apply only to certain treatment options, not to all shipments.

How does a JB detection impact shipping to different states?
  • Category 1 states: Shipments must use JBHP-approved mitigation options after a detection. For most growers, available options will be limited to treatment prior to shipment.
  • Category 2 states: Nurseries may use any Category 1 option, as well as additional options listed in the JBHP appendix, including accreditation programs where applicable. (See JBHP, pgs. 7 to 18)

Are any plants exempt from Japanese beetle requirements?

​​​
Yes. Bare-root plants with clumps of soil or growing media less than ½ inch in diameter are exempt from Japanese beetle regulations.​ ​

What does the ODA do after a beetle is found? 

​​​
The ODA's priority is to prevent the spread of JB to protect the nursery industry and other agricultural sectors. In the event JB is detected, ODA will work directly with the nursery to develop a site-specific response plant, which may include: 
    • Additional trapping to determine whether the beetle was isolated or part of a larger population
    • Targeted treatments, if needed
    • Ongoing monitoring and documentation

In summary

​​​
A single Japanese beetle detection changes how the ODA is able to certify a nursery's shipments, but it does not stop shipping. ODA works closely with affected nurseries to manage risk using JBHP-approved options and to support continued compliance

​For more detailed FAQs about shipping requirements, please review these documents:​ 

​State Requirements that vary from the JBHP


​​


Details about variations


​​​Arizona

  • ​​​Turfgrass shipments may require additional permissions and trapping
California
  • ​Dip treatments are only accepted between September 1st and May 1st
  • Media incorporation plants must be potted at least 30 days prior to shipment
Colorado
  • ​​Containerized plants 7" in diameter or less are exempt from the quarantine
  • Containerized plants 16" in diameter or more are not eligible for shipments
  • Soil or growing media clumps on crowns or roots must be less than 1/2"
  • Insecticide media incorporation is not an approved method for certification
Idaho
  • Plant crowns or roots for propagation under 50mm plug is exempt from the quarantine
  • Liner rooting media is exempt from the quarantine
  • Bareroot plants must be completely free of soil
  • Dip treatments are not approved for any B&B nursery stock
  • Drench treatments are not approved for grasses or sedges
  • There may be additional trapping requirements 
Montana
  • Bareroot plants with soil or media clumps smaller than 1/2" are exempt from the quarantine (this does not apply to grasses or sedges)
  • If plants are treated, they must arrive in Montana betwen October 1st and May 31st
  • No field-grown stock or sod is allowed entry into Montana between June 1st and September 30th
Nevada
  • ​There may be additional trapping requirements
New Mexico
  • Containerized and B&B plants with a diameter less than 12" are exempt from the quarantine
  • Trapping is mandatory regardless of treatment, unless plants were produced in an approved screenhouse or entirely grown outside of the JB adult flight window
Utah
  • Media incorporation plants must be potted at least 30 days prior to shipment
  • Drench treatment and media incorporation of insecticide are not approved for shipments of grasses or sedges
  • Adult Japanese beetle flight season is considered to be June - October
  • There may be additional trapping requirements

Resources