484 
STATE HOETICULTURAL SOCIETY. 
all things considered, fruit in some seasons, but not in others, 
when the cold'is too great. There are some sorts that can 
stand no more cold than the germ of the peach, or tender 
cherries. 
Those that will stand from 20 to 26 degrees below zero, are 
the Lombard and its seedlings, Blucher’s Gage, Imperial Gage, 
Duane’s Purple Gage, German Prune and the White and Blue 
Damson. 
Those that will stand from 16 to 20 degrees below, are the 
White, Yellow, Red and Purple Egg, Coe’s Golden Drop, Hul- 
ing’s Superb, Reine Claude de Bovey, French, McLaughlin, 
Manning’s Long Blue Prune, ’Horse Plum, Bingham’s Gage, 
Green, Red and Purple Gage, Featheringham, Blue, White and 
red Pertrigan. 
Those that will stand only from 14 to 16 degrees below, are 
the Washington, Jefferson, Early Royal and Peach Plum. 
Our best wild sorts are occasionally killed in some localities. 
But this does not arise so much from absolute cold weather as 
from their location, so that, though they survive the winter, 
they start their buds, and then a cold snap coming on, the 
flower buds are killed; and thus the fruit is lost. 
There are drawbacks to the successful growing^and raising 
of plums beside severe cold; such as leaf-blight, aphis, thrips 
and curculio; and some trees are damaged by overbearing^ 
The blight makes its appearance in July and August, and 
causes the leaves to drop very earlj/", and then if a warm fall 
follows, it will stimulate a second growth, and new leaves and 
blossoms appear just when the first frosts occur. I have never 
seen a tree recover when thus affected. They always die. 
The aphides and thrips also destroy the leaves by eating them, 
sucking out fhc juice, and they also drop immediately, thus 
producing almost the same effect as blight. These insects can 
be assailed, by killing them by some of the means known to 
gardeners; such as decoctions of quassia wood, tobacco and 
some other things, which will kill them, if put on with some 
instrument that will wet the leaves on the under side. 
