VARIETAL DESCRIPTIONS OF VEGE7Y ABLES ¢ KEYSTONE SEEDS 
Mach Dolcetta S : 
Feldsatat CORN SALAD Canonigos eason 
Days 
Valerianella olitoria Planting 
Prin- Tele- to Mar- 
cipal graph__ketable 
Uses Code Stage 
LARGE LEAVED H CLAMP 60 
Sometimes called Lamb's lettuce. An extremely hardy type plant that forms rosettes of 
tender leaves which are used as a substitute for lettuce and mixing with salads. Leaves 
are large, rounded, and thick. 
Ce ES VCE OO R NE ana 
Zea Mays var. rugosa 
Sweet Corn seed of today is the result of the most highly developed and controlled process in 
the garden seed industry. We refer specifically to the Hybrids and Top Crosses now available 
which are made to fit particular conditions and requirements whether it be for canning, freezing, 
shipping or local marketing. 
After years of inbreeding by the tedious task of hand pollination, pure inbred lines are developed 
to then be combined by cross pollination to produce the Hybrids. Our breeding operations are 
designed to develop, maintain, and supply the best Hybrids and top crosses for our customers’ 
requirements. 
The performance of adapted Hybrids in comparison to open pollinated varieties is astonishing. 
The vigor, disease resistance, uniformity of maturity, resistance to lodging, quality, and productivity 
is truly outstanding and justifies their widespread use and increasing popularity. 
The number of days shown to reach the edible stage represents an average over a period of 
years at our Keystone Valley Farm trial grounds and may be expected to vary in different sections 
of the country. 
While sweet corn is a warm season crop, it is desirable to have the harvest season come during 
a period of cool temperatures, since quality is retained longer under these conditions. Shallow 
cultivation is practiced for weed control since many of the roots of corn plants are near the ground 
surface. Seed treatment is an added insurance for successful production. 

CORNELI’S GOLD RUSH — Combining exceptional earliness and quality. 
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