This section is from the book "The Wild Garden", by W. Robinson. Also available from Amazon: William Robinson: The Wild Gardener.
Handsome and rather dwarf perennials, mostly with bluish, pinkish, or deep rose flowers, admirable for naturalisation. Some of the better kinds of the hardy geraniums, such as G. iberieum, are the very plants to take care of themselves on wild banks and similar places. With them might be associated the fine Erodium Manescavi ; and where there are very bare places, on which they would not be overran by coarser plants, the smaller Erodiums, such as E. romanum, might be tried with advantage. Goat's Rue, Galega. - Tall and vigorous but graceful perennials, with very numerous and handsome flowers, pink, blue, or white. G. officinalis and its white variety are among the very best of all tall border flowers, and they are equally useful for planting in rough and wild places, as is also the blue G. orien-talis and G. biloba. They are all free growers.

A hardy Geranium.
 
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