550 THE GREEN-HOUSE. [Oct. 
less hardy on the approach of winter; therefore, on every warm or 
mild day keep the windows open; and even on mild dry nights, 
during the remainder of this month, you may slide down the upper 
front lights so as to admit a little air at top. But observe to keep 
the windows close shut in cold weather, frosty nights, and during 
the continuance of cold rains or fogs. 
It will still be necessary to water the plants frequently but 
moderately, especially the shrubby kinds; the succulent sorts will 
not require it so often. 
Pick off, from time to time, all decayed leaves, and keep every 
part of the house constantly clean and free from tilth of any kind. 
The deciduous green-house plants, such as the Lagerstrcemia 
indica, punica, granata, or double-flowering pomegranate, Croton 
sebiferum, or tallow-tree, &c. may be placed on a platform erected 
at the back of the stage, as noticed in page 90, or they may be pre- 
served very Vv'ell during the winter in a dry warm cellar that has 
windows to admit light, air, &c. as necessity may require. 
Preserving Green-House Plants in Garden Frames. 
There are but few green-house plants of a small size but may 
be preserved during winter, in great perfection, in garden frames 
of the following construction. 
The frame should be erected on a bed of earth in a remarkably 
dry and warm exposure; it should be made of strong planks, four, 
five, or six feet high in the back (according to the size of the plants) 
eight or nine inches high in front, and four or five feet wide, with 
the ends sloping accordingly. The length should be in proportion 
to the number of plants you have to winter, but at every nine or 
ten feet there should be partitions or stays in the inside for the 
support of the back. 
Around this frame you are to form another at the distance of two 
feet therefrom, made of any kind of rough boards, supported by 
pots, and of the same height. The vacancy between both frames 
is to be filled up to the top with tanner's bark, dry litter, leaves of 
trees, or any other substance that will keep the frost from pene- 
trating to the plants. 
Your frame being thus made, plunge the pots containing the 
plants to their rims in the inside, either in tan or light sandy earth, 
placing the lowest in front and the tallest behind, and cover the 
whole with well glazed and well fitted sashes. During the most 
severe winter the generality of green-house plants may be effectu- 
ally preserved in this or the like frame by laying on, as occasion 
requires, a sufficient quantity of mats over the glasses, and over 
these a covering of boards. 
The plants are to have light and air given to them at every 
favourable opportunity, and should be treated, generally, as directed 
for those in the green-house. 
Many other similar contrivances may be made, and with the 
desired effect, as nothing more is necessary for the preservation of 
these plants than light, air, a moderate share of moisture, and an 
effectual protection from the frost. 
