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University of Tennessee Resistance Screening Program

Jimmy Mynes1, Alan Windham2 and Mark Windham2

1Research Assistant and 2Professor, Department of Entomology and Plant Pathology,

University of Tennessee, Knoxville, TN 37996-4560

mwindham@utk.edu


Resistant Cultivars (<2% foliage with blackspot and/or Cercospora leafspot)

Cultivar

Company Supplying Rose*

Blushing Knockout

Weeks

Brite Eyes

Star

Double Knockout

Weeks

Double Pink Knockout

Weeks

Golden Eyes

Bailey

Hansa

Jackson & Perkins

Kashmir

Bailey

Knockout

Weeks

Moje Hammarberg

Weeks

My Girl

Bailey

Pink Knockout

Weeks

>White Dawn

Jackson & Perkins

Wildberry Breeze

Jackson & Perkins


*Roses may be obtained from companies other than the company that supplied the cultivar for our experiments.


Moderately Resistant (<10% foliage with blackspot and/or Cercospora leafspot)

Cultivar

Company Supplying Rose*

Carefree Sunshine

Bailey*

Como Park

Bailey

Forty Heroes

Bailey

Homerun

Weeks

My Hero

Bailey

Palmengarten Frankfurt

Weeks

Super Hero

Bailey

Wild Spice

Jackson & Perkins

Wild Thing

Jackson & Perkins


Tolerant Roses (have foliar spotting, but plants do not defoliate and bloom well)

Cultivar

Company Supplying Rose*

Apricot Candy

Star*

High Voltage

Bailey

Mother of Pearl

Star

Pink Promise

Jackson & Perkins

Pink Traviata

Star

Pope John Paul II

Jackson & Perkins

Tolerant Roses (have foliar spotting, but plants do not defoliate and bloom well)

*Roses may be obtained from companies other than the company that supplied the cultivar for our experiments.

NOTE: These roses have been tested for two or more years where plants were under intense disease pressure in Crossville, TN (zone 6a) and Jackson, TN (zone 6b). Resistance may or may not hold in your area due to changes in environment or pathogen genetics. If you have questions, please contact M. Windham (mwindham@utk.edu).