The plant, which grows to a height of 1.5 m, has an upright growth habit with some sprawling branches. The leaf shape is similar to that of a European Hawthorn, Crataegus oxyacantha L., for which the species was named. The young branches generally have 1 nodal spine about 0.5 cm.
Under limited testing, this gooseberry cultivar has been rated as very disease resistant. Spring frost damage complexed with gray mold, Botrytis cinerea Pers., did not cause stem injury. Powdery mildew, Sphaerotheca mors-uvae (Schwein.) Berk. & Curt, did not infect stems or fruits, even during a cool wet summer where severe disease infestation was present in other cultivars. Leaves were free of leaf spot, Drepanopeziza ribis (Kleb.) Hohn, and remained green throughout the summer. Also, white pine blister rust, Cronartium ribicola Fisher, has not been observed on leaves of this plant. Neither aphids, nor saw-flies, Pachynematus spp., infested this plant although they were present on other cultivars in the trial planting in Corvallis.
Genetic material of this release is deposited in the National Plant Germplasm System where it will be available for research purposes, including development and commercialization of new cultivars. Limited quantities of JAHNS PRAIRIE cuttings are available. From: Kim E. Hummer, Curator, USDA-ARS National Clonal Germplasm Repository, 33447 Peoria Road, Corvallis, OR 97333-2521. The Agricultural Research Service does not have plants for commercial sale.