AUTUMN PERENNIALS UNDER GLASS 105 



it produces till quite the end of the year out of doors in the 

 Isles of Scilly, and would probably answer as well as the larger- 

 growing A. arborescens. Alas ! they have one fault, they close 

 in dull weather. 



Paris Daisies, both white and yellow, grown from spring- 

 struck cuttings, make delightful autumn plants when plunged 

 out of doors during the summer, and the points of the shoots 

 carefully pinched out to make them bushy. There is some- 

 thing so innately cheery about them that, common as they 

 are, they may not be left out of our year-end programme. 



Several of the hardier Salvias, treated in the same way, 

 make fine and useful plants. They are so quick-growing, as a 

 rule, that after the cutting stage is passed they require several 

 shifts during the season, until finally they reach a Q-in. pot, in 

 which size they should flower well. Severe pinching is also 

 necessary to make them compact, but in any case they take up 

 more room than most plants. For a strictly cold greenhouse 

 it is better to be content with such species as S. Pitched (syn. 

 S. azurea grandiflora), S. coccinea superba, S. Hians, purple 

 with spotted lip, and S. patens, well known, with deep blue 

 flowers, of which there is also a white form, rather than the 

 more tender species. In a good season, however, and with the 

 temporary help, on occasion, of a heat radiator, S. splendens, 

 with its brilliant scarlet spikes, S. gesneraefolia, and S. rutilans, 

 but with Pineapple scented foliage, may be successfully grown, 

 though they need a genial temperature of at least 50 to 

 develop their flowers satisfactorily. The cultural treatment of 

 both hardier and more tender species during the summer is 

 identical. 



The subject of retarding flowering plants by refrigeration, 

 which is coming so much into vogue, can hardly be passed 

 over without some reference here. It is now quite possible 

 to procure many different kinds perennials (such as Astilbe 

 japonica, better known as Spiraea), bulbs, represented by 



