Perennial Disease Resistance Trial (PREP) Garden

Herbaceous perennials are often stated to be disease resistant, especially in the areas where they have been hybridized, selected and introduced. However, being disease resistant in one area of the country doesn’t necessarily mean it will have that same degree of disease resistance in other areas of the country.

The purpose of this evaluation is to assess the degree of disease resistance or susceptibility among 57 perennial cultivars.

visit the PREP Homepage

Plants Used