1. *See product timing chart You probably don’t need to spray**
Do I need to spray for Japanese Beetle?
Have the plants/media EVER been outside?
Yes
Were the plants/media outside between June 15 and Sept 30?
Yes No
You need to spray*
*See product timing chart No
Are there other plants/media in the greenhouse that are NOT certified Japanese Beetle (JB) free or exempt from JB requirements ?
Have the plants/media been separated by a physical barrier from plants or media that are NOT certified JB-free or exempt from JB requirements ?
Yes No No
Were plants started from seed ?
OR from plant material sourced from a certified JB-free facility?
OR from plant material free of soil, substrate or media?
OR produced entirely outside the flight period ?
Yes
You probably don’t need to spray** No
**Please consult D for the most up to date regulations or contact your local CFIA office
Yes

2. Adult flight /egg laying period in Ontario
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Adult flight /egg laying period in Ontario
Aprox. life cycle
Grub root feeding
Pupation
Eggs
Grub root feeding
Overwintering grub
Overwintering grub
(1st to 3rd instars)
(3rd instars)
(3rd instars)
Jan
Feb
Mar
Apr
May
June
July
Aug
Sept
Oct
Nov
Dec
Acelepryn * OR OR
Acelepryn *
Acelepryn *
Jan 1
Apr 30
Jun 15
Aug 15
Dec 31
curative
preventative
curative
* Use HIGH RATE of Acelepryn or chlorantraniliprole equivalent. Only 1 application of Acelepryn/Intercept allowed per year. Intercept is only effective against early instars of Japanese beetle.
Control timing
Lorsban **
** Residuals will not provide extended coverage (~2 weeks); reapplication may be required.
Lorsban/dursban**
Apr 1
May 15
Jul 30
Sept 30
curative
curative
Intercept *
Jun 15
Aug 15
preventative
Suggested application timings are subject to change. Please contact your local CFIA office or OMAFRA specialist if questions arise.