To collect astilbe seeds, first, wait for the seed pods to dry on the stems. Find a dry and well-ventilated area to hang the stems upside down. This could be a garage, shed, or even a covered porch. By letting the pods dry on the stems, you give them time to mature and develop fully.
Once the pods appear ready to split open, it’s time to gather them. Place a paper bag underneath the dried astilbe stems to catch any falling seeds. Gently shake the stems or lightly tap them to encourage the pods to release the seeds. The paper bag will help contain the seeds and prevent them from scattering.
After shaking the stems, carefully inspect the paper bag for any seeds that may have fallen. You can also gently crush the dried pods to release any remaining seeds. Be thorough in your inspection to ensure you collect all the seeds.
Next, transfer the collected seeds from the paper bag into a paper envelope or another suitable container. It’s important to use a paper envelope rather than a plastic bag or container, as paper allows for proper airflow and helps prevent moisture buildup that could damage the seeds.
Label the envelope with the name of the astilbe variety and the date of collection. This will help you keep track of the seeds and their viability in the future.
Store the envelope in a cool, dry place until spring. A cool basement or a refrigerator can be suitable storage locations. Make sure the seeds are kept away from direct sunlight and extreme temperature fluctuations.
When spring arrives, you can then sow the astilbe seeds in a well-prepared seedbed or in small pots indoors. Follow the recommended planting depth and spacing for the specific astilbe variety you are growing.
By carefully collecting and storing astilbe seeds, you can propagate new plants and continue to enjoy their beautiful blooms in your garden.
