If you tell one of your friends, "I'm really interested in learning more about heirloom fruits and vegetables," you're not likely to get more than a funny look. Even though heirloom plant varieties have enjoyed a recent renaissance among certain types of gardeners, they still don't have much of a mainstream following.
Here are some aspects of heirloom plants (especially vegetables and edible plants) that make them particularly interesting.
Heirloom plants are niche-specific
Every gardener and commercial farmer knows that climate is everything. Heirloom plants have been selected over hundreds of generations to preserve specific characteristics that make them thrive. The heirloom plants growing in a specific garden are a kind of historic record of successful reproduction in that specific environment. Over generations, plants that were successful and prolific were replanted to create a unique blend of species in each and every garden.
This gets even more interesting when one considers microclimate. In the same field or garden, patches of ground get differing amounts of rainfall and sunlight. Some types of plants thrive in slightly more or less light. Two types of pole beans growing side-by-side in your garden may have different needs. Raising heirloom vegetables and other plants makes you a sort of historical detective and gives you the opportunity to find a seed that loves each part of your garden.
Heirloom plants are disease-tolerant
Heirloom survivors have been selected by survival-of-the-fittest to resist pests and diseases. In olden times, farmers and gardners had very little recourse to pesticides, antifungals and other poisons. Weak and fussy plants died. The strong survived to be harvested, and of course the smart farmers preserved seeds from the best plants.
Local heirloom varieties tend to be tolerant of local conditions. For instance, South Florida heirlooms will be drought-resistant, will be better able to withstand harsh sunlight, and will tolerate Myllocerus undatus predation.
Heirloom plants offer genetic diversity
Some people are interested in heirloom plants because they want to prevent them from becoming extinct. When a rare animal becomes extinct, it is a tragedy and the extinction can have ripple effects throughout the ecosystem. When an heirloom plant becomes extinct, all of mankind is put at risk.
Here's why: agribusiness plantations rely on vast fields of monoculture. That's one plant, often genetically identical, spread across tens of thousands of acres. Now these plants are the peak of our scientific development. Their genes are patented. But a single novel disease can lay waste to an entire species.
Just like the Gros Michel banana fell to Panama disease.
Just like the American chestnut was almost wiped out by Diaporthe parasitica.
Just like potato blight caused the Irish Potato Famines.
It's happened before and it may happen again. Any time a large population relies on a single species to produce food, there is great risk of a novel pest or disease disrupting the food supply.
Heirloom plants support pollinating insects
Nearly all heirloom plants are open pollinators. Pollinating insects, especially bees, relish the variety of blossoms provided by heirloom plants. You can support our bee population and have a beautiful garden by adding some blooming heirloom plants to the mix.
... and they're different and awesome!
One of the most astonishing aspects of heirloom vegetables and fruits is the sheer variety of them. You'll see potatoes that are white, red, pink, blue, purple, even black. There are beans in every color and size you can imagine. Tomatoes as warty as a toad, tomatoes sweet as candy, tomatoes mottled green and red.
Heirloom gardeners rediscover flavors, too. Heirloom varieties have been preserved over time not just because they're hearty, but because they're delicious.
So order some heirloom seeds, put them in the ground and get ready to help save the world -- while you're growing a delicious dinner for yourself and your family.