Nasturtium seeds do need to be dried before storing them. This is an important step to ensure the longevity and viability of the seeds. When you harvest nasturtium seeds from your garden, they are typically surrounded by a fleshy seed pod. These seed pods contain moisture, which can lead to mold growth and deterioration of the seeds if not properly dried.
To dry nasturtium seeds, start by removing the seeds from the seed pods. You can do this by gently squeezing the pods or by using your fingers to pry them open. Once the seeds are removed, place them in a single layer on a clean, dry surface. This could be a paper towel, a plate, or a fine mesh screen. It’s important to spread them out in a single layer to allow for proper airflow around each seed.
Next, find a warm, dry, and well-ventilated area to let the seeds dry. Avoid areas with high humidity, as this can impede the drying process and increase the risk of mold formation. A sunny windowsill or a well-ventilated room with good air circulation are ideal locations for drying seeds. Make sure to keep the seeds away from direct sunlight, as this can cause them to overheat and lose their viability.
Leave the seeds to dry for about 1 to 2 weeks, or until they are completely dry to the touch. During this time, periodically check on the seeds to ensure they are not developing any signs of mold or rot. If you notice any seeds that appear moldy or discolored, remove them immediately to prevent the spread of mold to the rest of the batch.
Once the nasturtium seeds are fully dried, you can store them in airtight containers. Small envelopes, glass jars, or resealable plastic bags are all suitable options for seed storage. It’s a good idea to label each container with the seed variety and the date of harvest to keep track of the seeds’ freshness.
Store the containers in a cool, dry, and dark place, such as a pantry or a basement. Avoid storing them in areas with fluctuating temperatures or high humidity, as this can reduce the seeds’ viability over time. When stored properly, nasturtium seeds can remain viable for up to 3 to 5 years.
By taking the time to properly dry and store your nasturtium seeds, you are ensuring that they have the best chance of successful germination when you decide to plant them in the future. This simple step can make a significant difference in the overall success of your gardening endeavors.