VARIETAL DESCRIPTIONS OF VEGETABLES 
KEYSTONE SEEDS 
♦ 
SWEET CORN 
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, 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 customer's 
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 St. Louis trial farm and may be expected to vary in different sections of the country. 
GOLDEN CROSS HYBRID—The Leading Hybrid 
Tele- 
HYBRIDS graph 
Code 
CORNELLS GOLD RUSH HYBRID (New) CHOOP 
This is the one. A first early yellow hybrid for the early market with the strong hybrid 
vigor and productiveness to replace the old open pollinated first early yellow sorts. Its 
earliness and beautiful ears are almost unbelievable but unquestionably true as the 
records show from our St. Louis breeding farm. 
STALKS—6 feet tall, more foliage and sturdier than regular Golden Bantam; high 
percentage produces 2 ears per stalk. 
EARS — 8^/2 inches long, 12 to 14 rowed, slightly tapered, well filled to tip, most 
attractive yellow, tight husk. 
KERNEL—Tender, sweet, of fine quality and flavor. Seed yellow, wrinkled. 
COUNTRY GENTLEMAN HYBRID (8x6) CHAAB 
Of the Country Gentleman types this hybrid is well known with canners. Its deep kernel 
produces a high ratio of cut corn per ton. It has developed to edible stage in 76 days 
on our St. Louis breeding farm, and is fine for market gardeners. 
STALKS—7 feet tall, dark green, stout, vigorous and heavier foliage than regular 
Country Gentleman. Characteristic of this hybrid, inherited from line 8 in 
the cross, is a floppy or rolled tassel of value for its resistance to hot winds. 
EARS —7% inches long, more cylindrical than regular Country Gentleman and 
deeper kernel, well filled to medium blunt tip. 
KERNEL—The seed kernel is rather round in shape. Kernel on hybrid ear typical shoe 
peg type. 
Season. 
Days to 
Edible 
Stage 
65 
84 
— 30 — 
