TRI-OCEN 
THE PERFECT SPRAY 
For Roses 
and Other Flowers and Plants 
DR. G. GRIFFIN LEWIS 
SAYS: 
"I most emphatically recom¬ 
mend Tri-ogen to all rose 
growers as the most effec¬ 
tive disease and insect 
combatant I know of."— 
DR. LEWIS, Author 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, 
eminent plant Pathologist, 
says, "After several years' 
trial in my experimental 
rose garden, I am now 
ready to recommend spray¬ 
ing with Tri-ogen as first 
choice." 
DR. McFarland says: 
"Tri-ogen is definitely de¬ 
pendable, even under ex¬ 
treme conditions." 
TRI-OGEN 
The all-purpose spray 
A POSITIVE PLANT PROTECTION 
This complete Rose 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 Eit (makes 64 quarts).. .$4.00 
C. Large Eit (makes 32 gallons).$6.00 
D. Estate Eit (makes 128 gallons). .$20.00 
Al.Ii POSTPAID 
"We have had outstanding success 
with the two thousand rose bushes 
I have on my home place since we 
started using Tri-ogen."—C. G. 
TILDEN, Winter Garden, Fla. 
"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 
results as Tri-ogen." C. A. 
ROSE, Louisiana State Uni¬ 
versity and Agricultural 
College. 
"We are proud of and 
grateful 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. 
