LANDRETHS’ PENNSYLVANIA CERTIFIED TOMATO SEED 
A PRODUCT OF SCIENTIFIC SELECTION 
The purchaser of any seed is interested in the crop which that seed will produce when 
planted. Good Seed produces Good Crops, and Good Crops in turn make Satisfied Customers. 
Our best means of advertising are by our satisfied customers. A successful seed dealer 
selling to growers must have good seed since farmers have a right to expect good crops. 
Good Crops can only be produced by the use of Good Seed. By Good Seed we mean: 
First —Seed of high vitality, that is, quick germinating qualities and the power to make 
rapid and vigorous growth. 
Second —Seed which will produce high yields per acre. 
Third —Seed free from disease. 
Fourth —Seed which will produce a crop true to type for the variety it represents. 
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 BEGINNING OF OUR PROJECT—1929 
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. 
Figure 1 —Fruit 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. 
