There are many different varieties of heirloom tomato seeds, and probably one of the most popular reasons people to plant these tomatoes is their local resistance to pests, local weather, as well as their unique look and flavor. Also, heirloom tomato seeds are frequently grown organically without pesticides, fertilizers, or growth hormones.
Heirloom tomato seeds are those varieties of tomatoes that were usually cultivated before 1950. This was before crop tomatoes were being grown in large quantities by crop farmers and genetically changed. The crop farmer hybrid varieties do not openly cultivate themselves, meaning that the farmer has to buy seed every year. Heirloom tomatoes are openly cultivated and will actually produce their own seeds for the next year, saving the farmer from purchasing new seed and being able to cultivate these tomatoes on a yearly basis without extra cost.
Also, many of the heirloom varieties of tomatoes are easy to grow organically. Since they are resistant to pests, you don’t need to use pesticides, and because they grow easily in local climates, you don’t need fertilizers either. This means that they can be organically grown in local soil; also, being organic is another popular reason for consumers to purchase the heirloom tomatoes.