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 2 to 1 inch deep and from % to 
14%) 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 remarkakle 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. 
615. 
But for late spring crop best of all Nos. 315 and 
GIS.fG. «i 
For Imperial Valley, California. We recommend 
Imperial 615. 
For Salinas 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 YORE PW 55 
GREAT LAKES IMPERIAL. One of the most satis- 
factory Imperial types yet produced. Especially 
recommended for the Rocky Mountain region as 
it withstands extreme changes of temperature 
and weather better than other heading sorts. 
Produces gzhigher per cent of very large, well 
rounded, very solid heads of attractive color. Re- 
sistant to tipburn and early bolting. For com- 
mercial grower, one of the most profitable varie- 
ties to grow. 
(Pkt. 15c) (oz. 45c) (4% lb. $1.40) (Ib. $5.50) (5 lbs. 
$25.00). 
@® 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. A crop of PW55 
planted on good ground will yield a high per 
cent of hard, crisp, well-rounded, fine appearing 
heads. 
(Pkt. 10c) (oz. 35c) (% Ib. 90c) (% Ib. $1.75) (Ib. 
$3.25). : 
IMPERIAL NO. 411. The earliest of the Imperial 
strains has proven very satisfactory especially 
when grown for early crop to harvest in May and 
early 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. 
(Pkt. 10c) (oz. 35c) (% Ib. 90c) (12 Ib. $1.75) (lb. 
$3.40). 
Award Winner in 
@) All-America Selections Trials 

16 THE WESTERN SEED COMPANY, DENVER, COLORADO 
