Are you enjoying this year’s harvest of your chili peppers and want to ensure the same for the future? Perhaps you’ve even attempted to create a new variety? In this article, we’ll explain the best way to save chili pepper seeds for the next season.

Technological and Physiological Maturity

First and foremost, it’s crucial to distinguish between technological and physiological maturity of chili pepper fruits. Technologically mature fruits have reached their full size and are typically green in color, ready for consumption in their fresh state.

A prime example of technological maturity is the green Jalapeño pepper. Physiologically mature fruits come later and represent the stage where the seeds are fully mature for further propagation.

Their color depends on the variety, ranging from red, orange, purple, yellow, brown, to white.

Therefore, physiologically mature Jalapeño peppers change color from green to red with brown streaks. It’s the physiologically mature fruits that you’ll need if you intend to save your seeds.

Steps on How to Save Chili Pepper Seeds (using the Jalapeño variety as an example):

• Selecting the Best: After your peppers turn red, leave them on the plant for at least another week to ensure the plant has reached physiological maturity. Then, choose healthy fruits without any signs of pests or diseases. If the plant shows signs of disease on the leaves or stems, it’s likely that the fruits are infected too. Planting seeds from infected fruits next year could introduce the pathogen (whether it’s a virus, fungus, or bacteria), which will eventually harm the plant.
• Extracting the Seeds: Once you’ve harvested fully ripe fruits, use a knife to cut the fruit open and separate the seeds. Immediately discard any suspicious seeds with different (darker) color or shape.

• Drying: Place the extracted seeds on a paper towel and let them dry for about 2 weeks. Turn your seeds every few days to ensure even drying. It’s important to keep them in a well-ventilated room during this phase, away from direct sunlight.
• Testing: After a week or two, test if the seeds are dry enough by attempting to fold a few of them. Generally, if they bend, they’re not dry enough. Or, if you’re brave enough, try biting one. If your teeth easily pierce the seed, it’s not dry, and you’ll be searching for milk or water to soothe the burn.
• Storage: Once you’re certain the seeds are dry, it’s time to store them properly. It’s best to put them in small plastic or paper bags and label each with the variety name and the year of storage. All seeds look quite similar, so this labeling is crucial for identification without having to wait for the fruit to know what you’ve planted. At this stage, ensure the seeds are kept in a dry, dark, and cool place to maintain their germination ability. The best storage is in the refrigerator at a temperature of 5 – 10 °C in well-sealed plastic zip bags as mentioned earlier. Besides the fridge, you can also store them in the basement, in a dark and cool place, away from heat and moisture. This way, you slow down the seeds’ metabolism and prevent them from germinating until it’s time (next year).