FLORICULTURE 
Different varieties vary greatly in sus- 
ceptibility, and the ordinary grower will 
find the most satisfaction by discarding 
the most susceptible kinds and growing 
others which are less liable to disease. 
R. E. SMiru, 
Calif Exp. Sta Bul. 218. 
References 
California Experiment Station, Bulletin 
218. 
Dugzgar, Fungus Diseases of Plants. 
ROSE PESTS 
Large Rose Aphid 
Macrosiphum rosae Linn 
General Appearance 
A large aphid, being green and pink in 
color. The apterous forms have dark cor- 
nicles and the joints of the legs and an- 
tenne dusky, while in addition to these the 
thorax, entire antenne and blotches on 
the sides of the abdomen of the winged 
forms are dark. Length, two to three mm. 
Readily distinguished from the other com- 
mon green rose aphid by the large size 
and pink forms. 
Life History 
Works on the young shoots and buds of 
the roses, almost throughout the entire 
year. Especially troublesome in the early 
spring during the months of April and 
May. Not so serious a pest on roses as is 
the small green louse (Myzus rosarum.) 
Food Plants 
Roses, wild and cultivated. 
Control 
In order to save the buds it is some- 
times necessary to spray the bushes with 
a soap and tobacco spray. Washing the 
bushes every day with a high pressure 
of water will keep them off and is a prac- 
tical method of control. 
Natural Enemies 
Natural enemies completely eliminate 
the attacks of this pest by the middle of 
summer. 
Fuller’s Rose Beetle 
Aramigus fullert Horn. (Family Otiorhyn- 
chide) 
General Appearance 
The adults vary from gray to very dark 
brown in color and from three-eighths to 
971 
one-half an inch in length. The eggs are 
about one-twentieth of an inch long, pale 
yellow and laid in rows. The larve are 
milky white and without legs. The pups 
are also white. 
Life History 
The eggs are laid in clusters in secluded 
places on the trunks of trees or at the 
base of the trees or plants often close to 
the ground. The young white grubs are 
subterranean in their habits, doing great 
damage to the roots of many plants. The 
adults when seen during the day are very 
sluggish. They have no power of flight. 
Much damage is done to plants by this 
pest unknown to the farmer, owing to the 
fact that the larve work underground and 
the adults feed at night. 
Food Plants 
Foliage of citrus trees, roses, oaks, ca- 
mellias, palms, Canna indica and the roots 
of strawberries. Young or newly budded 
citrus trees are often greatly damaged by 
this pest. 
Control 
The larve, like all subterranean pests, 
are difficult to control, but thorough culti- 
vation and hoeing close to the plants are 
great aids. In light sandy soil, carbon 
bisulfid is efficient. The adults being un- 
able to fly are easily kept from trees by 
means of a cotton or tanglefoot band 
around the trunk, but are very trouble- 
some to low plants and bushes where such 
methods are impracticable. Poison sprays 
such as arsenate of lead must be resorted 
to in such cases to save the foliage. 
H. O. Essie 
RASPBERRY Horn Tar. See Raspberry 
Pests. 
Rose Seale 
Aulacaspis rosae Bouche. 
General Appearance 
The female scales are nearly circular 
with very irregular edges and white to 
gray in color with reddish body. This 
scale multiplies very rapidly and clusters 
in great numbers on the stems of roses 
and kindred plants, especially about the 
crowns. 
Somewhat difficult to control. Badly in- 
fested canes should be cut out and burned. 
