INSECTICIDES—Continued 
Good News for 
Rose Lovers 
Tri-ogen 
Trade-Mark 
THE ALL-PURPOSE SPRAY 
No More Bugs or Bothers 
TRI-OGEN once and for all solves 
the black-spot problem. It gives com¬ 
plete protection against all fungous 
diseases, including mildew, black-spot, 
rust, canker, etc. 
TRI-OGEN protects absolutely against 
all insects pests. 
Its stimulating value promotes vigor 
and growth, healthy green foliage— 
with resulting luxuriant blooms. 
That is why gold medals have been 
won consistently by the amateur and 
professional growers who have adopted 
the Tri-ogen treatment. 
Read the experiment recounted in 
the American Rose Annual. 
Read the enthusiastic, volunteer 
endorsements of its value by rose 
experts. 
THERE IS NOTHING 
IN THE WORLD LIKE 
TRI-OGEN 
TRI-OGEN 
The all-purpose spray 
Fungicide—Insecticide — Plant Stimulant 
Complete Protection against Plant 
Insects and Diseases 
In the past. Mildew and Black Spot have been most 
difficult to combat. However, these diseases are now 
easily controlled with the Tri-ogen Spray Treatment, 
which gives COMPLETE protection against all diseases 
and insect pests. It is easily applied and also acts as 
a plant stimulant—producing vigor in growth with 
resultant luxurious blooms, heretofore considered im¬ 
possible. The Tri-ogen Spray Treatment applied weekly, 
from early season until late frost, makes it possible 
for the amateur to achieve the success, in many cases, 
comparable to the professional grower. 
TRI-OGEN was officially adopted for the exclusive 
protection of the Garden of 16000 Roses, at the 
CENTURY OF PROGRESS, Chicago World's Fair. 
PRICES 
A. Small Kit (makes 16 quarts).$1.50 
B. Medium Kit (makes 64 quarts).4.00 
C. Large Kit (makes 32 gallons).6.00 
D. Estate Kit (makes 128 gallons).20.00 
These Prices are Prepaid 
Ask for Free folder telling- about experi¬ 
ments with Tri-Ogen. conducted by Dr. 
L. M. Massey, Plant Pathologist, Cornell 
University, also testimonials from such 
world renowned rose growers as J. Horace 
McFarland, Jackson & Perkins Co., etc., etc. 
TRI-OGEN 
Trade-Mark 
COMPLETE PROTECTION AGAINST INSECTS AND DISEASES 
INSECT SPRAY AND FUNGICIDE 
Highly Concentrated for Garden and Greenhouse Plants 
ROSE-GARDEN SPRAY TREATMENT 
Nothing Else Required 
1. Repellent—Insect Killer and Protection 
Destroys leaf-eating insects, as Japanese and other beetles, rose-slugs, caterpillars, 
webworms, red spider and many other insects. 
Remains as protection on foliage for a long time—repelling subsequent attacks. 
2. Kills Insects by Contact 
Destroys insects by wetting, as aphis (plant-lice), ants, thrips, white-fly, leaf-rollers, 
leaf-hoppers, rose-chafers, chrysanthemum midge, leaf-tiers, Japanese beetles, aster 
beetles, tarnished plant-bugs, lace-wing fly, and many other insect pests. 
3. Fungicide—Disease Control 
As mildew, black-spot, canker, and rust on roses and many other plants; rust, yellows, 
stem-rot, delphinium blight, and fungus on most other plants. 
Stimulates Plant-Growth Tri-ogen Is Harmless to Foliage or Blooms 
Convenient—Easy and Pleasant to Use—Triple Acting 
Especially recommended for roses, asters, snapdragons, carnations, hollyhocks, 
delphiniums, phlox, chrysanthemums, zinnias, golden glow, dahlias, and many other 
plants subject to disease and insects. 
It is ECONOMICAL. The contents of the package are highly concentrated and make 
60 times its volume when used as a spray. 
TRI-OGEN TREATMENT saves time and labor. Spreads evenly and adheres to foliage 
without showing- conspicuously. This treatment has been used and tested by rose and 
plant-growers the world over, with astonishing results. 
A. Small Kit (makes 16 quarts) $ 1.50 —Protects 12 to 20 roses for season 
B ; Medium Kit (makes 64 quarts) 4.00 —Protects 50 to 80 roses for season 
C Large Kit (makes 312 gallons) 6.00 —Protects 100 to 160 roses for season 
D Estate Kit (makes 12S gallons) 20.00 —Protects 400 to 600 roses for season 
38 
