HEADING VARIETIES 
Days to Market, See Page 2. 
Market Growers' Prices, Page 91. 
GROWING LETTUCE 
The most favorable conditions for growing good lettuce are rich soil, 
plenty of moisture and steady growth from the time the seeds are 
planted until ready for use. Seed germinates quickly and may be planted 
as soon as the cold, wet days of spring are past. Sow in 18 inch rows, 
15 to 18 inches apart to a depth of not more than % inch. 
Loose Leaved Varieties may be thinned to about 1 inch apart as soon 
as a few leaves are formed. When large enough for eating, they may 
be thinned further as used. 
When growing Head Lettuce it is necessary that the heading season 
take place during cool weather. For this reason it is a good policy 
to sow the seed in boxes indoors or in hotbeds and set out as early as 
weather conditions permit. If this is not practical, seed may be sown 
in the open ground as early as soil and weather conditions are favor¬ 
able. Thin 10 inches apart in the row and give thorough cultivation. 
A side dressing of nitrate of soda, given as soon as the plants have 
made some growth, will be found beneficial. 
Lettuce 
0 
A Fine Commercial Field of Lettuce Growing in the San Luis Valley, Colorado. 
Varieties Used New York No. 12 and No. 515. 
BiQ Boston days. Heads are exceptionally large, compact, fine glob- 
^ ular shape. Medium light green in color with a slight tinge 
of brown showing on the broad, smooth, wavy outer leaves. They are firm 
and brittle, and the interior is a rich golden yellow color. 
(Pkt., 6c) (oa., 10c) (%, lb., 25c) (lb., 80c) (5 lbs., $3.40) prepaid. 
^ days. The best of the California cream butter type. 
>-i/r©alTiy n©arT Heads early, solid and without brown spots or brown 
---- edge. Market gardeners find this especially valuable 
for cool season culture; superior to Black Seeded Tennis Ball and similar 
varieties. 
(Pkt., 5c) (oa., 10c) lb., 25c) (lb., 80c) (5 lbs., $3.40) prepaid. 
^ I J days. Produces fine, round-shaped, heads; good, 
wOlOiaQO OpSGIal bright color; not ribby. A sure heading sort. Some 
—- report 90 to 95 per cent harvested. We know of no 
lettuce having better quality. It withstands heat well. We recommend it as 
the best for Colorado mountain growing. 
(Pkt., 5c) (oa., 10c) (% lb., 30c) (lb., $1.00) (5 lbs., $4,40) prepaid. 
l*vtr\Ari.al QA7 days. Best described as being similar to Imperial F, 
impsrial 0“/ but less ribby and smoother leaved and with more of a 
- ■ conical protection. Resistant to brown blight. Intended 
for early fall planting. Plant rather large, well molded and heads firm under 
good growing conditions. Leaves light color, smooth, thick and soft in texture. 
Is inclined to tip burn in too hot weather. 
(Pkt., 5c) (oa., 15c) (% lb., 40c) (lb., $1.25) (5 lbs., $5.50) prepaid. 
34 
D. V. Burrell Seed Growers Co., Rocky Ford, Colo 
