264 
THE CULTIVATION AND MANAGEMENT OF HOSES. 
outside, (a chimney is indispensable.) will give 
great abundance of forced Roses from Feb- 
ruary to the end of May. To ensure this a 
supply must be kept ready ; so that, say 
twenty may be placed in the forcing pit about 
the middle of December, in like manner about 
the middle of January, and the same about 
the middle of February. . They must not be 
pruned until taken into the house, when each 
shoot should be cut back to two or three buds 
or eyes, the latter for stray shoots. The fire 
should be lighted at seven in the morning, and 
suffered to burn out about the same hour in 
the evening, unless in frosty weather, when it 
must be kept burning until late at night, so as 
to exclude the frost; and for this purpose 
double mats should be placed on the lights. 
The thermometer should not by fire heat be 
higher in the day than 70° during Decem- 
ber, January, and February; at night it may 
sink to 35° without injury. The temporary 
rise on a sunny day is of no consequence; but 
no air should be admitted at such times, as 
the plants will extract themselves, and accord- 
ingly shed their leaves. When the sun begins 
to have power, and in sunny weather towards 
the end of February, the plants may be 
syringed every morning about ten o'clock with 
tepid water, and smoked with tobacco at night 
on the least appearance of the aphis, or green 
fly. To ensure a fine full crop of flowers the 
plants should be imbedded one year in pots, 
and plunged in tan or saw-dust in an open ex- 
posed place, so that the shoots are all exposed. 
The pots must be often removed, or, what is 
better, place the pots on slates, to prevent 
their roots striking into the ground; but with 
the hybrid and damask perpetual Roses, if only 
potted in November previous, a very good crop 
of flowers may often be obtained, and a 
second crop better than the first; for the great 
advantage of forcing perpetual Roses is, that 
after blooming in the greenhouse or drawing- 
room, their young shoots may be cut down to 
within two or three buds of their base, and 
the plants placed again in the forcing house, 
and a second crop of flowers obtained. The 
same mode may be followed with the Bour- 
bon, China, and the Scented Roses: with the 
latter indeed a third crop may be often 
obtained." Mr. Rivers goes on to say, that as 
the season advances air may be given, syringing 
must be continued, and that plants making 
their second growth should be watered once a 
week with manure water, which manure water 
is recommended to be made of 2 lbs. of guano 
to ten gallons of water, — a strength we should 
think highly dangerous, some kinds of guano 
being twice as strong as others, and upon the 
whole guano being the most varied and un- 
satisfactory of all manures, and therefore the 
least to be depended on. There are some 
guanos that would, at 2 lbs. to ten gal- 
lons, destroy many kinds of Roses on their 
own bottoms. There is a vagueness in the 
foregoing directions as to a forcing-house, — 
there are doubts in our mind whether an 
Arnott's stove would heat a house up to 70° 
in December and January with wholesome 
atmosphere, unless, indeed, it was made to boil 
water upon the tank system, in which case we 
see no very great difficulty in the matter. 
Our next objection is to the heating of the 
house up to 70° in the day at starting. We 
remember some Roses which went from a 
popular nursery into a first-rate establishment, 
where the gardener was not at all used to 
forcing Roses, and he, by putting them into a 
house of 70°, forced every bud blind ; and we 
have invariably found that when the transition 
was great at first, there was a failure of bloom. 
THE DOUBLE-YELLOW ROSE. ROSA SULFHUREA. 
This beautiful and much-admired variety or 
species of Rose has baffled our very best cul- 
tivators. All manner of speculations have 
been tried by various growers, and none have, 
as we learn, answered completely. From all 
that we have seen and heard, there appears to 
be one well ascertained fact, — namely, that it 
never blooms well till it has been some years 
in its place, and that, if it, as it will in some 
instances, show buds at an earlier period, they 
will not open freely, and in most cases rot on 
the branch. This Rose is one of the most 
double we have, and the bud before it opens is 
as hard as a solid body. In all cases where 
they are known to flourish well, the trees are 
old; and although the gardeners may pretend 
they do this or that, or the other, the tree 
itself does it all, when arrived at the maturity 
which is necessary, and would do just as well 
without help as with it. Indeed, one that we 
know of, that seems to do well, has not had a 
knife to it for years, except to cut some of the 
flowers, which are so abundant as to fairly 
cover the whole tree. This Rose requires, then, 
a treatment which no other one wants: the 
only theory we know of that is necessary, is 
good stuff to grow in, plenty of room, and 
then plenty of time. Mr. Wood, junior, has 
exhibited bunches of the yellow Rose, which 
he says does very well with them; and they 
looked very well, but we doubt if any were 
cut from the young stock. They have possibly 
an established tree there, which supplies the 
exhibition stands; for Ave never yet saw either 
a worked plant or a young plant bloom well. 
This Rose has to contend with two evils in this 
country — the spring frosts, and high winds ; 
one might almost say a third — heavy rains. 
It grows early, and frequently has all the first 
shoots cut back with the frost, or the blighting 
