W. Robinson, The Subtropical Garden; or, beauty of form in the flower garden
“ So grown, however, the full beauty of the plant has not time to develope; and much the better way is to treat it as a half-hardy subject, putting it out in some sunny and sheltered spot, where the roots will not suffer from wet in winter. The shoots will be cut down by frost, but the root will live and push up strong stems in spring, forming by midsummer a bush about 3 ft. high, very distinct and beautiful, with large, pinnate, light sea-green leaves, which will not suffer from rain storms. ”
