Rosa 'Meikokan'

Summary

UC Davis is located in Davis, California, this site has a silty clay loam soil and plants are irrigated with potable water. More information about the field sites is located in the Nuts & Bolts section.

The color of the blooms on this vigorous and dense shrub rose is unique and eye-catching, and the ruffled petals just add to the appeal. Open House participants mostly commented on this aspect of the plants. Tequila Supreme was third on the Favorite Plant of the Open House list at our summer event. Minor black spot and leaf spot early in the season affected foliage, but by midsummer these leaves had mostly fallen. Later in the summer, aphids became an issue and heavy honeydew made the leaves really shiny and created a halo of stickiness on the ground surrounding the shrubs. Fortunately these issues had no real effect on plant vigor, though open house participants found this undesirable. Overall plant appearance was very good to good through September on all irrigation treatments, with this rating dipping in October as plants showed an early finish to the season (Table 15a).  One peculiar aspect of this shrub rose was the tendency to throw a long branch sideways; it could have been that these long canes grew straight up but couldn’t support themselves and fell sideways by the time we saw them in the field. Because this is a “no summer pruning” trial, this natural habit of the plant detracted somewhat from the uniformity and otherwise great overall appearance of the shrubs.  With some minor management of this habit, this heavily flowering cultivar would make an excellent addition to any landscape.  There were no significant differences in growth or overall appearance between the irrigation levels. We recommend irrigating according to the WUCOLS Low category.

Growth and Quality Data

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