972 
Spray with kerosene or carbolic acid emul- 
sion or lime-sulphur during the winter. 
Reference 
Monthly Bulletin California Commission 
of Horticulture II., 1 and 2. 
Rose Snout Beetle 
Rhynchites bicolor Fab. (Family Rhyn- 
chitide). 
General Appearance 
A small bright red snout beetle, with 
head, snout and legs black. The average 
length of the females is about one inch. 
The males are noticeably smaller than the 
females. 
Life History 
The beetles hibernate over winter in 
sheltered places and appear early in the, 
spring. The females roll up the edges of 
the leaves into small pockets like minia- 
ture thimbles into which the eggs are laid 
and the young reared. The larvae and 
adults feed upon the foliage, the latter 
also puncturing the fruit of blackberries 
and raspberries with their snouts or bills. 
Food Plants 
The beetles confine their attacks almost 
wholly to the wild rose, though they may 
occasionally work great damage to culti- 
vated roses and to berries. The adults 
also feed upon oak leaves and grape- 
vines. 
Control 
As this pest is normally a leaf eater 
it may be controlled by liberal applica- 
tions of arsenical sprays. These meet 
all requirements, except where they 
damage the fruit’ of berries, but even 
such attacks could have been prevented 
by spraying the vines before the berries 
began to ripen. E. O. Essra 
Small Green Rose Louse 
Myzus rosarum Walk 
General Appearance 
A very small species, not nearly as 
large as Macrosiphum rosae; green 
throughout except dark markings on the 
winged forms. It is often mistaken for 
the larger species 
Life History 
A very serious rose pest at times, and 
especially bad in the summer months. 
ENCYCLOPEDIA OF PRACTICAL HORTICULTURE 
It breeds very rapidly, collects in great 
numbers upon the leaves and excretes a 
great amount of honeydew which smuts 
the bushes. The worst rose pest in many 
parts of the state. 
Food Plants 
Roses, usually more serious on climb- 
ing varieties. Attacks the leaves and 
buds and may prevent the production of 
flowers 
Natural Enemies 
Syrphid flies do considerable work upon 
this species, but the natural enemies are 
not numerous enough to check the rav- 
ages until late in summer. 
E. O. Essie 
Other Insect Enemies 
The rose is attacked by various in- 
sects which are common to fruit trees. 
Among them are San Jose scale, greedy 
scale, oyster-shell scale, red spider, apple- 
leaf hopper, etc. These will be found 
treated under Apple Pests. Frosted scale 
will be found under Prune Pests. 
LANDSCAPE GARDENING 
By Jonn W. Duncan 
Landscape gardening covers a broad 
field and considerable study, taste and 
judgment are required on the part of 
those who undertake the business. Land- 
scape gardening of the best order is the 
beautification with as little change as 
possible from what nature has already 
done. Mere planting and grading does 
not constitute landscape gardening and 
the proper grouping or clustering of 
shrubs and trees make really the most 
picturesque landscapes. Some of the best 
landscape scenes are found in this West- 
ern country and there is a wide field 
here for the artificial gardener. The 
great wealth of native trees, shrubs and 
other plants found all over this section 
of the country adds greatly to the work 
and simplifies the problem. A general 
theory or plan is necessary before there 
is any grading or planting, as it is neces- 
sary to work out the whole from the 
well studied out plan which should be 
made in the beginning. 
The indiscriminate growing of shrubs 
or plants often spoils a beautiful land- 
