132 PLANT PROPAGATION 
and leaf-mould, with a liberal admixture of silver sand. 
Sow about } inch apart, cover with a thin layer of the 
fine compost, and place in a temperature of 65 to 70 
degrees. When the third leaf appears, transfer the 
seedlings to 2-inch pots, keeping them well up to the 
surface. .Then grow on continuously in a moist atmo- 
sphere of 60 to 70 degrees without drying off or resting. 
They may be expected to blossom the second season. 
HiprpopuaE (SEA BuckTHORN).—Seed may be sown 
out of doors after cleaning. Increase is also effected by 
layers put down in autumn, by suckers, and by cuttings 
of the roots outdoors in February and March. 
Ho.tiy.—-The common green Holly is raised from 
seed that has been stratified in a rot-heap for a year and 
then sown outdoors in October. Some of the seedlings 
will grow the following spring, while others will remain 
dormant and not show signs of germination for another 
twelvemonth or even for two years. They are ready for 
transplanting when two years old. Variegated sorts are 
often veneer-grafted on seedling stocks of the green 
‘Holly in March, budded in May with a pushing bud, or 
in August with a dormant one. 
Ho.tyHocks.—Seed should be sown as soon as ripe, 
and the resulting young plants, if of choice varieties, 
potted up and wintered in cold frames. Seed sown in 
gentle heat in February and the seedlings grown on and 
planted out in May will produce flowering plants the 
same season. Single-flowered sorts, which are now 
very popular, will spring up self-sown on some of our 
railway banks and grow into good flowering plants 
without much trouble, making a good display of many 
charming colours when in blossom where they have 
space for development. 
