Hi Joe, can you share any information about how to collect and prepare American spikenard berries for propagation? I've got tons of invasive groundcover that I'm taking out gradually to replace with native plants here in Michigan. I have 3 spikenards that are extremely happy in their second year. And I'm looking for an affordable way to expand my population. I can't find any info online about how to care for the berries after harvest. (dry them out first? keep them wet? cold stratify or not? if so, for how long? etc.) Thank you!