LANDRETHS’ PENNSYLVANIA CROWN PICKED 
CERTIFIED AND CERTIFIED TOMATO SEED 
A PRODUCT OF SCIENTIFIC SELECTION 
All growers who purchase seed expect and should obtain good crops from that 
seed. Good Crops can only be produced by the use of Good Seed. By Good Seed 
we mean: 
First—Seed which will produce a crop true to type for the variety it represents. 
Second—Seed which will produce high yields per acre. 
Third—Seed free from disease. 
Fourth—Seed of high vitality, that is, quick germinating qualities and the 
power to make rapid and vigorous growth. 
LANDRETHS’ PENNSYLVANIA CERTIFIED TOMATO SEEDS 
ARE GOOD SEEDS —“SEEDS WHICH SUCCEED” 
Good Seed can only be produced by the strict adherence to the very simple 
rules of Scientific Selection. The results obtained then entirely depend upon those 
doing the work and the interest they take in it. 
THE LANDRETH SYSTEM OF TOMATO IMPROVEMENT 
The beginning of any Scientific Selection must start with the Plant. The saving 
of perfect fruits for stock seed without consideration of the plants from which those 
fruits came is generally very disappointing. The crop produced from those perfect 
fruits may be very inferior as shown by Figure 1. 
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Figure 1 —Fruit or Basket Selections Versus Plant Selections —The tomatoes 
on the left in the picture were grown from plant select seed, while those on the 
right were from seed taken from perfect fruits the previous year without 
consideration of the plant. Notice the smaller, flatter fruits of the fruit select 
strain of Marglobe on the right as compared with the plant selection on the left. 
