TRI-OCEN 
THE PERFECT SPRAY 
For Roses 
and Other Flowers and 
DR. G. GRIFFIN LEWIS 
SAYS: 
"I most emphatically recom¬ 
mend Tri-ogen to all rose 
growers as the most effective 
disease and insect combatant 
1 know of."—DR. LEWIS, Au¬ 
thor of the "Book of Roses," 
Honorary President of the 
Syracuse Rose Society. 
DR. WESTCOTT 
RECOMMENDS TRI-OGEN 
In her new book "The Plant 
Doctor"—Dr. Westcott, emi¬ 
nent plant Pathologist, says, 
"After several years' trial In 
my experimental rose garden, 
I am now ready to recom¬ 
mend spraying with Tri-ogen 
as first choice." 
DR. McFarland says.- 
"Tri-ogen Is definitely de¬ 
pendable, even under ex¬ 
treme conditions." 
TRI-OGEN 
The aii^purpose spray 
A POSITIVE PLANT PROTECTION 
This complete Hose Garden Spray 
Treatment — Tri-ogen — offers the 
first definite mildew and black spot 
control combined with an insecti¬ 
cide. It kills all insects, including 
the sucking and leaf-eating types. 
It remains on foliage, repelling sub¬ 
sequent attacks. 
Tri-ogen also stimulates plant 
growth, resulting in fine foliage and 
luxuriant blooms. 
In four sizes: 
A. Small Eit (makes 16 quarts).SI.50 
B. Medium Kit (makes 64 quarts).. .$4.00 
C. Large Eit (makes 32 gallons).$6.00 
P. Estate Eit (makes 128 gallons). .$20.00 
ALL, POSTPAID 
"We have had outstanding 
success with the two thous¬ 
and rose bushes I have on my 
home place since we started 
using Tri-ogen."—C. G. TIL- 
DEN, Winter Garden, Fla. 
Plants 
"Our roses where this ma¬ 
terial was used, were free 
from both insects and dis¬ 
ease Injury. During our long 
experience we have never 
found a spray material to 
give quite so satisfactory re¬ 
sults as Tri-ogen." C. A. 
ROSE, Louisiana State Uni¬ 
versity and Agricultural Col¬ 
lege. 
"We are proud of and grate¬ 
ful to Tri-ogen and we would 
like to have you come and 
see for yourself what it has 
done for our gardens."— 
JACKSON & PERKINS CO.. 
Nurserymen, Newark, N. Y. 
"Tri-ogen has worked 
wonders in my rose garden." 
—MRS. A. B. BROWN, 
Maquoketa, Iowa. 
"No doubt you will be pleased to know the three roses which won the sweepstake 
trophies at our Annual Rose Show were grown by rosarians, who have used Tri-ogen 
for the past two seasons. I am enclosing a photograph of these roses, and should 
you care to use It, the endorsement can be made available."—DIXON VALLANCE, 
Seattle, Wash. 
SIMPSON SEED and FLORAL CO. 
1525 CHAMPA ST. 
MAin 2778 
DENVER. COLO. 
