Colutea are the bladder sennas, deciduous shrubs with clusters of yellow pea-type flowers followed by inflated seedpods which are distinctive and decorative. They will thrive in dry, hot places where many other plants would fail. Colutea arborescens will grow 10 or 12 ft. high if unrestricted, but can be kept to half that height by cutting back most or all the previous year’s growth each February or March. C. orientalis is naturally smaller and C. media is a hybrid between the two and intermediate in size.


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