Maine-Grown Certified Seed Potatoes 
"Potatoes" 
Were introduced into New England by some immi¬ 
grants from the North of Ireland in 1718 and were first 
raised in the garden of 
Our potatoes are produced in Northern Maine, and 
Certified Seed carries the blue certification tag of thot 
State. 
Culture: Cut the seed into pieces, having 2 or 3 eyes. 
Plant in furrows 3 feet apart and 12 to 15 inches apart 
in the row. One peck of potatoes should be sufficient to 
plant 75 to 100 hills; 10 to 14 bushels are required to 
plant an acre. Potatoes do best on new soil and will re¬ 
spond generously to fertilizer applications. Cultivate by 
bringing the soil well up around the plant. Spray or dust 
the plants for insects and blight. 
POTATO PRICES 
Our potato prices are based on the market value at 
the time our catalog goes to press, and are subject to 
change without notice. This applies to both advance and 
decline. 
Green Mountain 
The Most Popular Potato in the World—Ideal for Main 
Crop—An Excellent Boking Variety— A De¬ 
pendable Winter Keeper 
A reliable medium late variety that is so popular in 
some sections that it has superseded all other main crop 
varieties. It seems to thrive in nearly all sorts of soils 
and in all locations, making heavy, healthy vines and 
'yielding large crops of smooth, white-skinned tubers of 
flatfish oval form. It cooks white, dry and mealy, and 
well. It keeps well and is less liable to scab and rot than 
most other varieties. Maine Certified Seed, 100 lbs., 
$3.00; 60 lbs., $2.00; 30 lbs., $1.10; 15 lbs., 65e. 
Chippewa 
The Chippewa is a recent introduction of the United 
States Department of Agriculture. It is a high yielding 
pototo, highly resistant to mild mosaic. It has a velvety 
white skin with very shallow eyes; regular in outline, 
oblong to elliptical in shape. It matures earlier than the 
Green Mountain and other late maturing varieties. It 
consistently produces an attractive tuber with a very 
high percentage of No. 1 potatoes. A distinct advan¬ 
tage possessed by the Chippewa is its maturity before 
the usual time of digging the late crop. While it is not 
classed as an early variety, it matures somewhat earlier 
than Green Mountain and other late maturing varieties. 
100 lbs., $3.25; 60 lbs., $2.10; 30 lbs., $1.15; 15 
lbs., 70c. 
MAINE-GROWN POTATOES ARE THE STANDARD 
Katahdin 
The Long Keeping Potato 
Originated by the U. S. Department of Agriculture 
and promising to become the outstanding late potato for 
market or storage. It was originated in Maine, by double 
crossing unnamed seedlings of Rural New Yorker No. 2 
and Aroostook Wonder parentage. It was bred for 
disease resistance, quality and yield. During the eight 
years it was under observation, it has been entirely free 
from mild Mosaic. In yields it has constantly surpassed 
Rural New Yorker or Green Mountain. The tubers are 
smooth, short, elliptical to roundish, and have few, very 
small eyes. The crisp white flesh has a distinct desirable 
cooking quality which appeals to the housewife. Maine 
Certified Seed, 100 lbs., $3.25; 60 lbs., $2.10; 30 lbs., 
$1.15; 15 lbs., 70c. 
Irish Cobblers 
An early, white-skinned variety, very short, thick, 
inclining to round. This is yearly increasing in popularity 
for the early market. Ready for market about ten days 
earlier than the Early Rose; tubers are uniformly larger 
and in overage production of large crops it is not equaled 
by any of the extra early varieties, nor greatly surpassed 
in yield by any of the main crop varieties. The vine is 
very stocky and vigorous, not as liable to be affected 
with blight or to suffer by drought as most others. A 
dependable early variety. Maine Certified Seed, 100 lbs., 
$3.00; 60 lbs., $2.00; 30 lbs., $1.10; 15 lbs., 65c. 
Irish Cobbler 
Raffia for Tying 
Raffia is the straw-colored inner skin of a palm found in Mada¬ 
gascar. It is very strong and tough but soft and flexible, which 
makes it the very best material for tying vegetables, plants, 
vines, etc. It is better than twine, cs it does not cut the plants 
and is much stronger. It is also used for making baskets. Raffia 
comes in hanks of from 1 to 5 pounds. We offer the best grade. 
Price per pound, 30c, not postpaid. 
FORMALDEHYDE. Prevents potato diseases and in¬ 
sures a clean healthy crop. 
Directions for treatment of potatoes for common scab, 
block scurf or rhizoctonio and black leg, cold method: 
Soak the uncut tubers 1 Vi hours in solution of one pound for¬ 
maldehyde in 30 gallons of water. If tubers are first dipped in 
or sprinkted with water, then covered with burlap sacks to keep 
them moist for a day or two before treatment, soaking period 
may be decreased to one-half hour and the effectiveness in¬ 
creased. See page 77. 
Rootone 
A Plant Hormone Powder 
Rootone treatment is now standard practice with 
professional and amateur propagators alike. Root- 
one has the endorsement of Experiment Station 
workers. Use Rootone on cuttings, garden and 
grass seed. See page 79. 
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ROSS BROS. CO 
