
GLADIOLUS THRIP 
Gladiolus Thrips have caused great damage to 
Gladiolus during the blooming season in nearly all 
parts of the U. S. the past two years. 
The Thrip is a very small insect about 1/20 of an 
inch in length and not easily seen, except when nu- 
merous. Thrips do not overwinter outdoors, where 
the ground freezes. The main source of infection is 
from planting bulbs infected with the insects. If 
your gladiolus did not blossom as good as in former 
years, it may have been due to the Thrip and you 
should treat your bulbs before planting. 
For treating a small number of bulbs, the sim- 
plest and most convenient method is by the use of 
NAPTHALENE FLAKES. This material inter- 
mixed with the bulbs at the rate of 1 oz. to 100 
large bulbs, in a paper bag or box gives complete 
control. After 2 or 3 weeks all insects should be 
dead. Crushed moth balls can be used if the flakes 
cannot be obtained. 
We believe that all bulbs offered for sale should 
be treated to eliminate Thrip, as they may be pres- 
ent without being known. We have accordingly 
treated our bulbs with the best known methods and 
Wwe can state with confidence, that our bulbs are 
free from Thrips. 


GELSER BROTHERS - DALTON, NEW YORK 
