LETTUCE 
ICEBERG VARIETIES 
1 oz. for 2000 plants or 100 ft. of drill; 
‘ 1 to 2 lbs. per acre 
CULTURE: It is not difficult to grow good head 
lettuce, but it is necessary to first have good seed of 
the proper variety and suited to your conditions. Also 
necessary is good soil and water so as to insure steady 
jrowth from the time the seeds are planted until the 
heads are ready to use. Unless the soil is rich, we 
recommend liberal amount of manure or commercial 
fertilizer. 
For large acreage, the most successful and best way 
is to plant 2 rows of beds 16 inches wide and 6 inches 
high with 24 inches between the beds for irrigation 
ditch or can be planted in single rows 20 inches apart. 
Two weeks after it comes up it is usually large enough 
to be thinned to single plants to a distance of at least 
14 inches. Keep crop clean of weeds at all times. Culti- 
vate thoroughly but not deep. Ground should not 
become dry but care must be used in irrigating. 
In the past few years the development and intro- 
duction of new varieties has been so fast that but 
few seed houses or planters have been able to keep 
up with the progress. We have devoted a large 
acreage in the mountains of Colorado—on our farm 
south of Denver; also in Arizona and California, 
to the trials and development of new varieties and 
strains. We carry in stock and offer to our cus- 
tomers only those varieties which we have found 
best. 
PREMIER or EARLY GREAT LAKES 
PREMIER GREAT LAKES—EARLY GREAT LAKES. 
80 days. Selected from a single plant for earli- 
ness, smoothness, lack of ribbiness and uniformity 
of heading. Outer leaves not as crinkled as 
regular Great Lakes. Slightly gray green in color. 
Heads well rounded with smooth base and small 
ribs. Yield a very high per cent of marketable 
heads. In one year it has become popular 
especially for planting in Rocky Mountain area. 
IMPROVED GREAT LAKES. 85 days. Medium early 
strain selected for it is resistant to tipburn and 
sun heat; bright green color; large outer leaves 
that stand erect and protect the large, well 
rounded firm to solid heads. Produces a high 
per cent of solid heads in warm weather. 
GREAT LAKES—LATE or MAIN CROP STRAIN. 
90 days. This variety is the most universally 
planted as due to. its resistance to tipburn, etc., 
it produces a very high per cent of large, uni- 
form, round heads well covered with dark green, 
large, heavily fringed outer leaves. 
NEW YORK PW 55. One of the surest heading 
varieties and unusually resistant to tipburn and 
slime. It is the result of many years of selection. 
Both in summer and fall will produce a high 
percentage of beautiful hard, symmetrical, well- 
rounded heads but somewhat small unless 
grown on good, fairly rich soil. 
IMPERIAL 411. An early Imperial strain has 
proven very satisfactory especially when grown 
for early crop to harvest in May and early in 
June. Also can be planted in early July for fall 
crop. Produces a heavy crop of fine solid heads 
but will not stand in field very long after it 
is matured. 
IMPERIAL 815. A sturdy, robust strain selected 
from 847. One of the best strains for Colorado 
but must be grown with care as it is a tight 
header and if weather is hot may tipburn and 
slime. Will not stand long in the field when ready 
to harvest. We recommend at least 2 or 3 cut- 
tings.. Don’t wait until the entire crop has ma- 
tured. It produces a surprisingly high per cent 
of No. 1 heads which are large, solid and of fine 
appearance. Likes frequent and light waterings. 
Best suited for early summer and late fall crops. 
NEW YORK 315. An excellent strain of New York 
for mountain, high altitude crops as it is a good 
header and slow to tipburn and bolt to seed. A 
rapid grower; heads large, well formed and slow 
to slime. At heading time it likes liberal amount 
of water. 
IMPERIAL 44. Heads medium large, slightly flat- 
tened, compact, one of the best hot, dry weather 
varieties, used extensively in the East and in 
Arizona for an early crop. 
PROGRESS. A new variety crossed with Imperial 
No. 44 which has proven very favorable and 
fitted to western climatic conditions, but does not 
meet adversities like Great Lakes. Produces 
a high percentage of marketable heads which 
are medium large, well formed, and not as rough 
as Great Lakes. Leaves, thick, dark green, and 
heavily curled. 
IMPERIAL 847. Heads uniform, good size; solid and 
usually round. Does unusually well in cool wea- 
* ther. 
CORNELL 456. Adapted for growing on muck soils; 
similar to Great Lakes except slightly smaller 
and of lighter green color. 
NEW YORK 199. An early variety; resistant to tip- 
burn. Heads medium large, compact, attractive. 
NEW YORK 12. An early variety; heads light 
green, rather flat. 
NEW YORK 515 IMPROVED. Similar to New York 
12 in habits and type of plant, but produces a 
larger percentage of marketable heads. Espe- 
cially suited for warm weather. 
IMPERIAL 152. Especially adapted to Arizona and 
California for fall crops, but for Colorado and all 
the Rocky Mountain region we found 815 a 
better sort. No. 152 produces large yields of 
good solid, fine appearing heads, but is quick to 
slime in hot weather. . 
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20 THE WESTERN SEED COMPANY, DENVER, COLORADO 
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