Rose Export Rules to the U.S. – CORRECTION

In a post that went up on Tues this week, I erroneously stated that an Additional Declaration was required for roses being exported to the U.S. from Canada. Please note that you do NOT need an A.D. under the GCP program for roses. It is up to each country to determine if RS R3bv2 is present.

Additionally, a specific pest module for RS R3bv2 is NOT required under the Greenhouse Certification Program (GCP), as roses are asymptomatic for this disease. You can read the UDSDA-APHIS and CFIA notification surrounding this issue here.

Read on for the full blog post about RS R3bv2 and the new export regulations that came into effect in May 2026.

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Growing Roses? Export Rules to the U.S. Have Changed – September 2026 UPDATE

In the efforts to prevent a quarantinable strain of Ralstonia from entering the United States, USDA-APHIS has changed importation rules for rose material for planting. This includes rose material coming from Canada. Under the new federal order, roses (Rosa spp.) grown in Canada must now have been grown entirely within Canada or the U.S.. This includes root stock and graft material.

This is to reduce a potential pathway for Ralstonia solanacearum Race 3 biovar 2 (Rs R3bv2) into the U.S., which can devastate solanaceous crops such as potato and tomato, as well as geraniums.

Note that as of September 16th 2026, UDSDA-APHIS and CFIA have released a notification that a specific pest module for RS R3bv2 is NOT required under the Greenhouse Certification Program (GCP), as roses are asymptomatic for this disease. Similarly, an Additional Declaration (AD) is NOT required by facilities under the GCP program. It is up to each country to determine if RS R3bv2 is present.

Read on for more details about RS R3bv2 and the new export regulations that came into effect in May 2026.

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Growing Roses? Export Rules to the U.S. Have Changed.

Under the new federal order, roses (Rosa spp.) grown in Canada must now have been grown entirely within Canada or the U.S.. This includes root stock and graft material.

This is to reduce a potential pathway for Ralstonia solanacearum Race 3 biovar 2 (Rs R3bv2) into the U.S., which can devastate solanaceous crops such as potato and tomato, as well as geraniums.

Read on for more details about RS R3bv2 and the new export regulations.

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Your Yearly Reminder of Japanese Beetle Requirements: Get Those Treatments on Before May 15!

Anyone following this blog for the last few years knows I like to remind y’all to make sure you treat your plants for Japanese beetle before May 15! This is because NO pesticides are allowed when Japanese beetle (JB) pupae are present (generally, May 15-June 15 in Ontario),which has gotten some growers into a pickle during spring shipping in the past.

Note that if you’re a nursery crop grower also treating for boxtree moth, you may surpass the maximum allowed applications or rate of Acelepryn per year if you also need to treat for JB. In that case, it might be better to time your treatments for JB in order to use intercept (imidacloprid) instead. So make sure to check out the pesticide timing chart in the JB Infographic in the full post.

This year, I’ve updated the JB Decision Tree and Infographic to include shipping requirements to different areas in the United States. So, if you or your staff need more clarification on any of these points, make sure download the latest PDF.

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June 24, 2025: Japanese Beetles Have Started to Emerge!

Japanese Beetle (Popillia japonica) adults were caught in pheromone traps yesterday in Vineland, ON, by Cassie Russell, OMAFA’s Nursery and Landscape Specialist. Read on for what the start of the adult emergence period means in terms of pest management for outdoor nursery and floriculture crops.

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Your Yearly Explainer of Japanese Beetle Requirements: Get Those Treatments on Before May 15!

For those of you planning on shipping ornamental products out of Ontario anytime between May 15 and June 15, this is your yearly reminder to get your curative application of Acelepryn on BEFORE May 15! Recall that no pesticides are allowed when Japanese beetle (JB) pupae are present (generally, May 15-June 15 in Ontario). So, if you haven’t already curatively treated your plants that are about to go out the door (either after Aug 15 in 2024 or before May 15 2025) they may not meet shipping requirements.

For more details, check our our updated infographic for JB control products and timing to know what to apply when. Not sure if you need to treat for JB or not? This post also contains a decision tree and a quick reference table for applicable JB programs when shipping outside Ontario.

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June 19, 2024: Japanese Beetles Have Started to Emerge!

Japanese Beetle (Popillia japonica) adults were caught in traps today in Guelph and spotted in the last day or two near London, ON. Read on for what the start of the adult emergence period means in terms of pest management for outdoor nursery and floriculture crops.

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Japanese Beetle Control 2024: Get your Japanese Beetle Treatments on BEFORE May 15!

For those of you planning on shipping ornamental products out of Ontario anytime between May 15 and June 15, this is your reminder to get your curative application of Acelepryn on BEFORE May 15! Recall that no pesticides are allowed when Japanese beetle (JB) pupae are present (generally, May 15-June 15 in Ontario). So, if you haven’t already curatively treated your plants that are about to go out the door (either after Aug 15 in 2023 or before May 15 2024) they may not meet shipping requirements.

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Japanese Beetle Control 2023: Changes to Allowable Pesticides and Updates to Infographic

It will soon be that time of year again, when Japanese beetle (JB) adults begin to fly! However, there have been some changes to acceptable control products for JB growers need to be aware of in order to be in compliance with certification programs for this pest.

This post highlights changes to treatments and also provides an updated infographic for JB control for those exporting to non-JB areas (both domestically and to the United States).

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Japanese Beetle Control: 2021 Considerations

japanese beetle_dave It will soon be that time of year again, when Japanese beetle adults begin to fly!

However, the cooler spring means pupation may take longer. So what does that mean for timing of control products?

This post answers those questions and provides current infographics for JB control for those exporting to non-JB areas.

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