190 GARDEN FLOWERS. 



blue, in June ; Cape ; 1768. H. pilosa (hairy) ; hardy annual ; 

 I foot ; flowers blue, in July ; Cape ; 1768. H. stricta (erect) ; 

 hardy annual ; i foot ; flowers blue, in June ; Cape ; 1823. H. 

 trifida (three-cleft) ; hardy annual ; i foot ; flowers blue, in 

 June ; Cape ; 18 19. 



Heliotrope. See Heliotropium. 



Heliotropium. Heliotrope, [Boragines.] A genus 

 comprising stove and hardy annuals, and stove and green- 

 house shrubs, of little importance, except the Peruvian 

 Heliotrope ( H. Pericviamun), which is a great favorite in 

 flower-gardens, and bears very fragrant blossoms, prized 

 chiefly for their perfume. This species is, strictly speaking, 

 a greenhouse low shrub. The young shoots will strike freely 

 in light sandy soil during summer, under a frame or hand- 

 glass, but more readily with slight warmth. When well 

 rooted, they may be potted into small pots, and placed in a 

 frame or in the greenhouse, where they may grow till their 

 roots show through the bottom of the pots, and then be 

 changed into those of the next larger size. Top the leading 

 shoots to produce laterals. They must be wintered in a 

 dr}'ish part of the greenhouse. If intended for beds and 

 borders, they must be hardened in cold frames in the spring, 

 and planted out in May after danger from frost is over. It 

 is sometimes preferred to keep an old plant or two through 

 the winter, and to put them into a hot-bed or warm house 

 about Februar}-, when they will produce plenty of young 

 shoots, the tops of which are quickly struck in a hot-bed ; 

 and, if potted and gradually hardened, make good plants for 

 turning out in May. Where there are no such conveniences, 

 the plants may be kqot in a warm part of the greenhouse in 

 spring, and the young shoots taken off as soon as they grow, 

 planted in sandy soil, and covered by a glass. Wlien 

 rooted, they may be potted, or at once planted out, according 



