ON THE CULTURE OF NEW AND RARE PLANTS. 
213 
ceous plants, and ranks next in value to the splendid species of Pentstemon. This 
gentleman possesses plants of it now finely in flower. Verbena Neillii. A showy 
lilac-coloured species, resembling V. Drummondii, but superior to it in the size and 
colour of its flowers. It is named after Mr. Neil of Edinburgh, and is well worthy 
of a place in the flower-garden. Verbena chamcedrifolia superba. This is indeed 
one of the most superb little plants with which we are acquainted. The flowers are 
of a much darker colour than those of the original species, and equally, if not 
more brilliant. As a flower-garden ornament, nothing can surpass it in beauty, 
and it will assuredly become a favourite when it is sufficiently known. 
NOTICES ON THE CULTURE OF NEW AND RARE PLANTS 
IN THE PRINCIPAL NURSERIES IN THE VICINITY OF LONDON. 
On the Advantages of removing Greenhouse Plants to the open ground in the 
Summer Season. 
There are many species of plants which, in their natural localities, are of very 
luxuriant habits, and exceedingly ornamental, but when they are confined to a pot, 
and kept constantly beneath a glazed roof, assume an unhealthy appearance, acquire 
stunted and unnatural habits, and are divested of nearly all their beauty, both of 
foliage and flowers. To these a full exposure to the atmospheric influences during 
a brief period, and an abundance of soil in which their roots can ramify and extend 
themselves without obstruction, would be highly advantageous. 
On the other hand, it must not be forgotten that there are some which, if treated 
in this manner, would attain to an inconvenient size, and instead of becoming more 
ornamental, would actually grow unsightly and cumbersome. It must be evident 
to every intelligent cultivator, that it would neither be expedient nor desirable to 
have plants of their natural size in our greenhouses and stoves ; consequently, those 
plants which grow naturally to the size of trees, should be very cautiously subjected 
to the treatment we are about to recommend. It is to what are usually termed 
6 shrubs ' that the following remarks will chiefly apply, as there will be no danger 
of these becoming too large for ornamental purposes. 
In several of the London nurseries we have seen greenhouse, and even stove 
plants of the latter description, placed out in the months of June or July in a well- 
prepared border, and again potted in September ; and it would be difficult to 
imagine, unless it were witnessed, the extraordinarily beneficial effects which such 
a mode of treatment produces. Plants that were previously in a languishing and 
unhealthy state, have in a few weeks been completely renovated, their proper and 
natural health and vigour has been restored, and when again removed into pots, 
the change in their appearance has been so striking, as to render it almost impos- 
sible to recognise the individual specimens. 
Nor is this system applicable to sickly plants alone. The universal deteriora- 
tion consequent on keeping any kind of plants in pots, may be speedily remedied 
