Stove and Greenhouse Plants and Flowers 179 



to encourage rapid growth, but once well established the plants require but 

 little artificial heat. Scale is the worst insect pest, but may be kept in 

 check by syringing occasionally with quassia and nicotine solutions. The 

 young shoots are sometimes attacked by Greenfly, but these may be kept 

 down by similar solutions or vaporizing. The same may be said of Thrips 



Fig. 284.Lachenalia tricolor, in basket 



and Red Spider the appearance of the latter being a sure sign of too dry 

 an atmosphere. 



Leucophytum (Caloeephalus) Browni. A distinct-looking stick-like 

 Composite of branching habit, much favoured of late years for carpet 

 bedding on account of its silvery appearance. It is propagated by cuttings 

 in spring. 



Lilium. Although a more or less thriving and increasing trade is done 

 by bulb merchants and nurserymen in the bulbs of a large number of 

 species of Lilium, market growers confine their attentions practically to 

 only three species, namely, L. candidum, L. lancifolium (or speciosum), 

 and L. longiflorum the last-named being the favourite. 



