LETTUCE 
Buy with Confidence 
Imperial No. 4. 
Lettuce 
German—Lattich Kopfsalat. Spanish—Lechuga. 
Italian—Lattuga. 
Culture of Iceberg and New York Varieties: 
The conditions necessary to grow good head lettuce are rich 
soil, plenty of moisture, and 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 total or partial crop failure. For 
most satisfactory results plant New York varieties so they 
mature in cool weather. 
After the soil is thoroughly plowed and prepared, drill in 
rows on a compact seed bed two feet apart, planting seed one- 
half to one inch deep, and from one-half to one pound of seed 
to the 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. When weather is cold use 
water very sparingly as crop can be stunted by too much water. 
If the weather is inclined to be a little too warm, it is possible 
at times to save the crop by an abundance of water. This crop 
requires from 75 to 105 days for maturity from seeding time 
to harvest. 
NEW VARIETIES OF LETTUCE 
We doubt if any variety of vegetables has had the persistent 
and intense breeding as has been done with the New York 
Iceberg Types of lettuce. In fact, the past few years the de- 
velopment and introduction 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, often as many as twenty different varieties growin 
side by side in one field. We do this work not only for our- 
selves but for other large dealers in seed as well as the Depart' 
ment of Agriculture. 
Some Wonderful New Varieties have come out the past two 
years. 
I-H Improved. 
In Arizona, we found I-H Special to be 
outstanding for fall crops, also No. 152 
and No. 41. 
For early spring harvest in Arizona, 
Imperial D and No. 615. 
For late Spring in Arizona, No. 515, No. 12. 
Regular New York. 
For California, Imperial D, No. 13 and Regu¬ 
lar New York, but 
For Colorado, in the vicinity of Denver, the 
best was I-H Improved, (see description), also 
Imperial Four (see description). Colorado No. 516 was 
also exceptionally good. No. 12 we rate as fourth best 
and is good to mature in July, and better than Imperial 
F and Regular New York. 
In the Mountains of Colorado, I-H Improved was first; Impe¬ 
rial Four and Colo. No. 516 very good; then our choice was 
Arizona Special and Imperial F. No. 12 did well but not as 
good as I-H Improved and Imperial Four. One objection to 
No. 12 was that it grows in our high altitudes so ribby and 
with irregular form. _ 
2 OUTSTANDING NEW VARIETIES 
On our Denver trial grounds, also at Granby, Colorado, 
we found these two very outstanding lettuces. Both turned 
out wonderful. Denver crop was harvested during July. 
Weather was very warm; quality of lettuce best we have 
ever seen. I-H Improved, we harvested 90 to 95%; 
Imperial Four, 80 to 85%. On the other varieties we 
harvested 10 to 65%. 
I-H Improved. A new introduction. For solidity, shape 
and appearance, it surpasses all other varieties. Pro¬ 
duces more solid, marketable heads per acre than any 
other variety. But, it should not be planted to mature 
in extreme hot weather. Pkt., 10c; oz., 25c; M lb., 90c; 
% lb., $1.65; lb., $2.85; 5 lbs., $13.00, postpaid. 
Imperial 4. Produces rounded heads, dark green; rec¬ 
ommended for earliest spring planting. We think it a 
better cold weather lettuce than I-H Improved. Pkt., 
15c; oz., 35c; M lb., $1.20; lb., $2.15; lb., $3.90; 
5 lbs., $17.00, postpaid. 
Do not confuse I-H Improved with I-H Special. 
U4] 
