224 The American Flower Garden 



water during blooming season. Most decorative. Flowers 9 

 inches across. Too short-lived for a perfect cut flower, and will not 

 stand shipment. It is useless to recommend named varieties here, 

 as hardly any two lists offer the same. The names are Japanese, 



and merely generally descriptive. , SIBERIAN (/. Sibirica). May, 



June; 2 to 3 feet. Makes large, compact clumps of linear leaves 

 from the centre of which rise tall stems of lilac-blue, beardless 

 flowers. 



JACOB S LADDER (Polemonium cceruleum). Grayish blue. May to 

 July; I to 3 feet. Expanded bell-shaped flowers, I inch across. 

 Should be in every border because of its rare colour in midsummer. 

 Easily adapted to any deep, rich loam, partly shaded, not very dry 

 places. Raised from seed in the fall, also increased by division. 

 Foliage has numerous finely cut leaflets, hence the popular name. 



LARKSPUR (Delphinium formosurri). Blue in all shades, to white. 

 June; 4 to 6 feet. The best of all the tall-growing blue perennials. 

 Should be in every border. (See OLD-FASHIONED FLOWERS, 

 p. 60). Deeply prepared, cool, rich soil. 



LEADWORT (Ceratostigma plumbaginoides). Cobalt blue. September, 

 October. Showiest low-growing, hardy, blue-flowered perennial 

 for mass effects in autumn. Blooms naturally then. Somewhat 

 resembles phlox. Stems red. Any garden soil. Needs winter 

 protection in the North. One of our most valuable plants. Prop 

 agated by cuttings. Frequently catalogued as Plumbago Larpenta. 



*MALLOW, MUSK (Malva moschata). Rose, white. July to September; 

 1 1 feet. Flowers ij inches across, well expanded, and borne 

 singly. Very showy, and one of the most easily grown of all plants 

 in any situation or soil. Good for border or specimen. In places 



has escaped from gardens and naturalised. , SWAMP ROSE. See 



NATIVE PLANTS, p. 93. HYBRIDS. A new race arising 



from the native mallows of the North combined with some of 

 the tropical species. These promise to be valuable for more or 

 less wild effects. Not suitable for formal beds or borders. Slender, 

 arching stems several feet long. Flowers in various colours, chiefly 

 shades of pink and madder; 6 inches across; produced all summer. 



MAN-OF-THE-ARTH, WILD POTATO (Ipomoea pandurata). White. May 

 to September; 2 to 12 feet. Flowers like a morning-glory, with deep 

 purple throat. One of the very hardiest tuberous vines. Useful 



