October   2004       The CRS CommPoster      11

 

Shade-Tolerant Roses - ….Continued from Pg 10

 

particular variety will grow well in the shade in your area is to contact a local ARS Consulting Rosarian.  Careful planning and selection of varieties can enable you to fill even those less-than-hospitable areas of your property with the glory of roses.

 

 

Sudden Oak Death

 

Three related letters contributed by David Elliott

 

Hello Mr. Elliot

 

I am currently the person responsible for managing Sudden Oak Death / Phytophthora ramorum issues for the Canadian Food Inspection Agency (CFIA). As you seem to have some knowledge of Sudden Oak Death (SOD), you may find the following CFIA links useful. http://www.inspection.gc.ca/english/plaveg/protect/pestrava/sodmsc/sodmsce.shtml

 

http://www.inspection.gc.ca/english/plaveg/protect/dir/d-01-01e.shtml

 

The first link is to the CFIA information page on Sudden Oak Death, the second is the CFIA policy on Sudden Oak Death. The policy document is currently under revision and I would anticipate changes by the end of the month.

 

Based on a CFIA pest risk assessment, Canada determined that regulating the genus of known hosts of Phytophthora ramorum is the most appropriate way of preventing the entry of this organism to Canada. Hence, when Rosa gymnocarpa was determined to be capable of supporting the disease, Canada regulated the genus Rosa. CFIA has surveyed for SOD in Canada for the past 3 years, including the natural forest. It is certain that this disease is being spread with nursery stock, with the largest amount of positive samples being associated with

 

 

 infected Camellia nursery stock distributed from the Monrovia Nursery Company of California. These plants were the subject of a public recall in the spring of 2004. This disease has never been found in the wild forest in Canada. Finally, regarding roses, CFIA is doing research on infection of commercial roses and recovery of Phytophthora ramorum from dormant rose stock this winter, with results anticipated for next spring. CFIA is in discussion with countries in Sudden Oak Death affected areas who wish to ship roses to Canada, regarding conditions for certification and shipment which will preclude the transport of Phytophthora ramorum. Please let me know if you have any further questions.

Rob Ormrod (250) 470-4893 ormrodr@inspection.gc.ca

Facsimile / Télécopieur : (250) 470-4899

Horticulture Specialist, Western Area Plant Products Program Network, Canadian Food Inspection Agency     www.inspection.gc.ca

 

 

 

 

To Shane Sela,

Plant Health

Forestry Specialist

 

Our local Rose nursery finds they are now being prohibited from importing roses from Europe and the UK due to a ban initiated by the USA and implemented by Agriculture Canada inspection service. In view of the following how can this be justified? I would hate to think that once again Canada was blindly doing the US bidding. Has any other Canadian or non US research work been done into this?

 

Heritage Roses Northwest, Western Regional News if you've been following the Sudden Oak Death reported to the press that the wood rose is a confirmed host of the SOD fungus, Phytophthora ramorum. In fact, the rose had been artificially inoculated with the fungus in a Berkeley lab. The inference was that all roses can spread the disease.          …..Continued on Pg 12