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 
growth 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. 

GREAT LAKES IMPROVED 
EARLY GREAT LAKES. Earlier than other Great 
Lakes. Color little lighter. Remarkable header, 
heavy yielder. 
GREAT LAKES. One of ihe most satisfactory im- 
perial types yet produced. Especially recom- 
mended for the Rocky Mountain region as it 
withstands extreme changes of temperature and 
weather better than other heading sorts. Pro- 
duces a higher per cent of very large, well 
rounded, very solid heads of attractive color. 
Resistant to tipburn and early bolting. For com- 
mercial grower, one of the most profitable varie- 
ties. 
IMPROVED GREAT LAKES. This new strain was 
produced by the United States Department of 
Agriculture from a single head selection and has 
shown very well in trials. It is a very vigorous 
grower, upright leaves. Very resistant to heat 
~ and tipburn. 
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 NO. 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. 
EARLY 815. A strain of 815 recently developed for 
earliness and yield. From trials on our farm we 
harvested 93% of the crop on first cutting. Heads 
were uniform, hard and larger than PW 55 and 
one week earlier than Imperial 847 and of good 
green color. We especially recommend _ this 
lettuce to planters who grow for the spring and 
early summer market, also for fall crop. 
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. 
IMPERIAL 847. Heads uniform, good size; solid and 
Br eaay 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 carly 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 per cent of marketable heads. Especially 
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. 
eee 
18 THE WESTERN SEED COMPANY, DENVER, COLORADO 
