These are perennials usually treated as half-hardyin this country. Heights vary from g to 18 in. and both single and double flowered strains are available. (The double strains may produce a proportion of single blooms.) Petunias require a light, dry, rich soil and a sunny . In wet summers and in even slight shade they are disappointing, tending to produce foliage at the expense of . They are excellent for window boxes and make ideal pot plants in the .
The colour range is very wide, although yellow and orange are so far absent. Here are some worth-while strains and named varieties. Silver Medal is salmon-cerise passing to rich salmon (1 ft.); Gipsy Ballerina is scarlet overlaid with salmon, about the same height and with a spreading habit. Blue Lustre reaches 1 ft. but with a spread of 20 in. The colour is a clear mid-blue and the blooms slightly waved. Comanche is a vivid brick-red to about 15 in. with good colour stability. Peach Satin, Pink Satin and Red Satin all have a dwarf, compact, bedding habit (about 10 in. tall), the last named being almost sunproof. The Ramona strain Super-Dwarfs only attain 6 in. with huge frilled and ruffled single blooms. They make first-rate pot plants. Pan-American All Double reach 15 in. and the percentage of double blooms is 100%, thebeing hand-pollinated.