Rosa 'AUSHOUSE'

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.

This is a fragrant, pink David Austin shrub rose. Like so many English roses, it attained greater height and width in our region than advertised by the breeder. In our trial it had a very open, lax growth habit with long arching canes that flowered near the ends, sometimes bare of leaves on the lower half. This is unlike the catalog descriptions we have read which describe it as “bushy and sturdy” or “densely shrubby” or “rounded”. At the end of the second year it averaged 56” wide (142.6cm) and 49.5” high (126cm), with no significant differences between treatments (Figure 4d). All plants leafed out well in spring with a strong flush of flowers in April, modest re-blooming in June and September, and a few blooms the rest of the growing season. However, the overall appearance of the plant declined to just acceptable by May and below acceptable for most treatments for the rest of the growing season (Table 7). Even on the highest treatment some leaves showed signs of sunburn or fading, and plants on all treatments wilted in midday sun throughout the summer. Flowering was significantly better on the highest irrigation treatment only in October, which was the only significant irrigation treatment effect observed. Our analysis is that Harlow Carr is just not heat tolerant in full summer sun in our climate region. Our recommendation for possible success with this rose would be to grow it in cooler, coastal areas, or site it where it receives afternoon shade inland.

Growth and Quality Data

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