Although these scarcely come into this selection, yet their fine habit and their hardiness give them a charm for us even in a wild garden. A legitimate aim, on the part of any one carrying out this to any extent, would be to try and develop a sub-tropical aspect of vegetation in certain places. In such a case the Yuccas could not be dispensed with. The free-flowering kinds (Y. flaccida and Y. filamentosa) should not be omitted, as they are more likely to spread and increase than the larger ones ; all such plants are better held together in groups.