LETTUCE 
All Prices Postpaid Unless Otherwise Noted 
ICEBERG VARIETIES 
CULTURE: The foremost conditions necessary to 
grow good head lettuce are rich soil, plenty of mois- 
ture, so as to insure steady growth from the time the 
seeds are planted until the heads are ready to use. 
A check in growth from lack of nourishment, moisture 
or adverse conditions, usually results in tipburn or 
undersized heads, but the amount of water or irriga- 
tions necessary depends a great deal on the soil loca-- 
tion and the variety grown. In most sections Iceberg 
is grown in double rows, although in Colorado for no 
good reason most Iceberg is grown in single rows. 
We recommend planting on beds 14 inches wide and 
6 inches high and two rows on each bed 24 inches 
apart. Be sure beds are smooth and almost free from 
lumps. Plant seed 4 to 1 inch deep and from % to 
1144 pounds seed per acre. 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. Cultivate thoroughly but 
not deep. Ground should not become dry but care 
must be used in irrigating. From experience we have 
- found that mixture of one part commercial fertilizer 
mixed with three parts pulverized manure as a side 
dressing applied shortly after lettuce has been thinned 
gives remarkable results. 
Each variety or strain of Iceberg lettuce has its 
own peculiarities or characteristics. A good lettuce 
grower takes this into consideration when he selects 
his seed and in the growing of his crop. 
NEW YORK STRAIN AND 
IMPERIAL STRAIN 
Two distinct strains of Iceberg, that is, the New 
York strain and the Imperial strain. In growing 
head lettuce the first thing to decide is whether 
you wish to plant the New York strains or the 
Imperial strains. This decision must depend on the 
time of the year or season when you wish the crop 
to mature and your climatic conditions. 
Imperial strains are more disease resistant to 
mildew, root and stem rot, give the largest per cent 
of solid heads, but more susceptible to tipburn and 
slime than are the New York strains. 
New York strains are the earliest, are less apt 
to slime or tipburn, produce the larger per cent of 
good marketable heads during warm weather, than 
do the Imperial strain. 
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. 
WE RECOMMEND 
For Arizona. 152, Imperial 44 and 847, out- 
standing for planting crops to mature in the fall, 
November and December. 
Early spring crop, March and early April, No. 
6193 
But for late spring crop best of all Nos. 315 and 
915. 
For Imperial Valley, California. We recommend 
Imperial 615. 
For Salinds Valley, California. We recommend 
Nos. 152, 315, 847. 
For Colorado. Vicinity of Denver: For starting in 
beds and transplanting to fields Nos. 12, 55 and 315. 
For early summer (June) Great Lakes, Nos. 55, 815 
and 411. For late June and early July, 55. Fall 
crop 815, PW55 and 411. For main crop in moun- 
tains of Colorado, 55, 315, 815 and Great Lakes. 

NEW YORK PW 55 
GREAT LAKES. From our 1944 trials, we find it 
an excellent heading variety for the Rocky Moun- 
tain region as it- withstands extreme changes of 
temperature and weather better than other sorts. 
Produces very large, well rounded, very solid 
heads. Slow to tipburn and slime; however, we 
do not think it is as well adapted to heavy muck 
soil as is PW55. 
(Pkt. 15c) (oz. 65c) (Y% Ib. $1.75) (42 Ib. $3.00) 
(Ib. $6.00) (5 lbs. $27.50). 
(iS) NEW YORK PW55. All-America selection for 
1942. The result of 16 years’ careful selection. 
Earliest maturing New York. Sure heading and 
shows considerable resistance to tipburn. Heads 
well in summer and early fall. Heads are hard, 
crisp, well rounded with a good base. After two 
years of growing No. 55 on our vegetable farms 
we give it No. 1 place for main crops in the 
mountains as well as in lower altitudes but only 
on good, rich ground. 
es 10c) (oz. 35c) (% Ib. 90c) (% Ib. $1.75) (Ib. 
3.40). ; 
IMPERIAL NO. 411. A new introduction of the Im- 
perial strain which has proven very satisfactory 
in the Rocky Mountain section, especially when 
grown to harvest in early June or in late Septem- 
ber and October when the weather is not ex- 
tremely hot. This variety will produce a heavy 
crop of fine, solid heads but No. 411 must not be 
neglected at heading time. 
Will not stand in the field after it has matured. 
sah yee (oz. 35c) (% lb. 90c) (12 Ib. $1.75) (lb. 
3.40). . 
— eS 
16 THE WESTERN SEED COMPANY, DENVER, COLORADO 
