100 BRECK’S NEW BOOK OF FLOWERS. 
rennials or biennials. Among them are the Verbena, 
Eschscholtzia, Commelina, Mirabilis, and many others. 
This class of plants may be kept through the winter in 
green-houses or in any light cellar. Annuals are most ap- 
propriate for those who are changing their abode from 
year to year, as from these alone a fine display may be 
kept up the whole season, with the exception of the vernal 
months, and this deficiency may be supplied by having a 
choice collection of perennials, grown in pots, which can 
be plunged in the ground, and thus removed at any time 
when it is necessary to change the residence. 
No collection of plants can be complete without an 
abundance of annuals, as they can be disposed of in such 
a way as to succeed the perennials, and keep up a con- 
tinuous bloom in all parts of the garden through the 
season. 
Annuals may be divided as follows :—hardy, halfthardy, 
and tender. 
Hardy annuals are such as may be sworn in autumn or 
very early in the spring, as all the Larkspurs, Clarkia, 
Asters, Candytufts, ete. Half-hardy are those which will 
not bear a hard frost, and therefore not proper to plant in 
the open ground before the middle or last of May, as the 
Balsam, Cocks-comb, Marigold, etc.. Tender annuals can 
hardly be brought to perfection without starting them in 
artificial heat, in a hot-bed or otherwise, and are very sen- 
sitive to cold, as the Cypress-Vine, Thunbergia, Ice-Plant, 
Sensitive-Plant, etc. Many of these, in a very warm season, 
will succeed tolerably well if planted about the Ist of June; 
but to have them in perfection they should be raised in a 
hot-bed, in pots, and turned out into the ground about the 
middle of June. 
Before sowing annuals, the soil in which they are to be 
grown should be made light and rich, and very finely pul- 
verized, as many of the seeds are very small, and require 
