Seed
See my in-depth Sundew Seed-Growing Guide in detail here
Seed is a very good way to produce large amounts of plants. Sundew seeds are very tiny. Some species of Drosera have such small seeds, it looks like black powder. Seeds are very commonly used in Tissue Culture since they can be easily sterilized. For most annual sundews, seed is the only method of propagation. Leaf cuttings and root cuttings don't seem to work. Most sundews produce seed through self-pollination. However, there are exceptions to this, such as the Petiolaris complex and Queensland sundews. These sundews must be cross-pollinated with another clone or with a sundew that is closely-related. Some sundew seeds germinate in only a few weeks, while some tuberous sundews can take up to 5 years to germinate. To learn how to germinate common sundew seeds, visit my Germination Guide. Some sundews can grow to maturity from seed in only 4 months.
Sundew seeds can remain viable for up to 10 years if stored in the refrigerator. The optimal storage temperature is around 4- 5 degrees Celcius.