Response of Additional Herbaceous Perennial Ornamentals to Meloidogyne hapla.

Twenty-nine herbaceous perennial ornamentals were evaluated for root galling after 2 months in soil infested with Meloidogyne hapla u n d e r greenhouse conditions. Plants such as Asclepias, Epimedium, Liriope, Lithospermura, Myosotis, Penstemon, Sidalecea, and Solidago did not have galls or egg masses present on the root system and were rated as resistant. Astrantia, Boltonia, Centranthus, and Miscanthus had more than 100 galls on the roots (similar to 'Rutgers' tomato controls) and were rated susceptible. The remaining plants were intermediate in response. The identification of additional M. hapla-resistant perennial ornamentals will aid in nematode management in nurseries and landscapes.