Sep, Oct, Nov
Before you get started, write the name of the seed on its envelope to avoid mix ups when planting. To start the process use a wide gauge sieve that the seed will pass easily through, shaking the seedheads above some clean paper. Some of the fine chaff will go through as well, but this will remove most of it.
After the first sift, transfer the seed and the fine chaff into another finer sieve, such as an icing sugar sieve or shaker. This time the fine chaff will land up on the paper and the seed will remain in the sieve.
Tip the cleaned seed into the labelled envelope, using a funnel if necessary. Seal, then put this envelope into a waterproof container for storage. Store your dried packed seeds in a cool dark place. Don't put in spots that are hot, moist or too light as the seed may rot or fry.