For many, preserving an heirloom seed in its original genetic makeup is important.
When we think of the word “extinction,” a head of lettuce normally doesn’t pop up in our minds. It’s also obvious that our grocery stores aren’t full of endangered fruits and vegetables either. But think about the prize-winning heirloom beets you boasted last spring, or your grandfather’s special heirloom tomatoes you remember eating every summer. If these heirloom seeds are not saved, the legacy of these plants will eventually die out.
Furthermore, preserving heirlooms creates diversity, making some gardeners feel it’s their responsibly to save these seeds so that genetic variation doesn’t become extinct. If you decide to save your heirloom seeds this year, there are some important ideas to learn and put into practice to ensure success.
How To Preserve The Genetic Makeup
Ensuring an heirloom variety doesn’t accidently change its genetic makeup is a top priority. Luckily, there are some simple practices that can help limit genetic loss. One is to ensure heirloom plants do not cross-pollinate with other varieties. The easiest way to avoid this is to separate varieties a fair distance away from one another. It’s a good idea to research each plant to ensure the distance is far enough away. For example, lettuce may only require separating it 25 feet, while some pepper varieties are considered a safe distance when distancing them at least 500 feet.
Other gardeners prefer time isolation, caging, bagging, and even individually hand pollinating - these are all techniques that can help avoid accidental cross-pollination. Keep in mind that while these practices take time and thought, if two varieties cross – their genes are permanently mixed.
How To Harvest Heirloom Seeds
When you’re ready to harvest, specifically select seeds from the plants that grew quickly and with vigor. A common mistake is to choose seeds randomly, and from mediocre plants. One major rule of thumb? Never save seeds from malformed fruit, or a fruit that has been damaged by insects, mold, or disease. Plants should be strong, healthy and not exposed to stressful conditions when early seed formation begins.
Removing any diseased plants away from potential seed saving plants will increase the viability of the plant and its seed. Diseased plants can also spread pathogens to otherwise healthy plants, and can affect the success of succeeding generations as well. During seed formation, be sure to provide the plant with sufficient moisture at flower time – this will promote pollen development and flower set.
Furthermore, learning how to properly harvest seeds from a variety of plants can ensure you’re getting the most from each plant. We look forward to sharing how to properly clean, dry, and preserve your heirloom seeds in a future post.
Friends, which heirloom varieties are you growing this year?