Perennials for a Thought-out Garden 223 



constantly removed. Foliage glaucous blue, and striking. Give 

 open, sunny situation. Short-lived, and best treated as biennial, 

 but may be increased by division. Hardy. 



INCARVILLEA (Incarvillea Delavayt). Rosy purple. June, July; I to 2 

 feet. Very showy, bignonia-like flowers, 2 to 3 inches long and wide. 

 Tube yellow. Finest hardy, herbaceous perennial in the family. 

 Large, bold foliage, I foot long, pinnate. Protect in winter. 

 Deep, light, sandy loam, in sheltered, warm place. Propagate by 

 division or seed. 



*!RIS, FLAG (FLEUR-DE-LUCE), DWARF (Iris biflora). Violet-purple. 



April; 10 inches. Also white and yellow varieties. (/. Cham- 



airis). Yellow. Late April; 6 inches. Also white and violet 



varieties. (7. pumila). Lilac-blue. April; 6 inches. Best 



for permanent edgings. Told from the two preceding by the flower 

 tube being two inches or more long. There is a brown and 

 yellow form. Earliest large-flowered iris for general use. Flowers 

 3 to 4 inches across. Increases quickly. The best blue variety is 



ccerulea. The best yellow, luteo-maculata. CRESTED DWARF 



(7. cristatd). Pale blue. April, May; less than I foot. Earliest 

 hardy iris for general use. Exquisite for edging. Flowers about 



2 inches across. Plant when growth starts. , FLORENTINE 



(7. Florentine?). The orris root of commerce. Flowers with 

 the German Iris. Quite hardy. 2 to 2^ feet. Flowers, 

 white tinged lavender, veined purple at the base. Early Var. 



albicans, pure white. Most common and easily grown. , 



GERMAN (7. Germanica). The great, purple-bearded iris. Perhaps 

 the most generally cultivated. 7. Germanica alba, so-called, is a 

 companion to the white Florentine, both flowering in May. The 

 so-called "German" irises of gardens are not varieties of 7. 

 Germanica, but a mixture of many species, and, consequently, 

 show great range of habit. Among the best of these are Madam 

 Chereau, white feathered and bordered blue; Aurea, golden yellow; 

 Eugene Sue, creamy white with purple spots and stripes; Liabaud, 

 yellow and maroon; Sappho, clear blue and indigo; Celeste, light 



lavender-blue. , ENGLISH. See p. 60. , JAPAN (7. lavgiata, 



or Kcempferi). Many varieties from silvery white through lavender 

 and magenta to purple, pure and in combination. July; 3 to 4 

 feet. Grows perfectly in an ordinary garden, if well supplied with 



