To propagate “pickled rush,” which is more commonly known as “pickerel weed,” the most reliable method is to divide the rhizomes in late winter or early spring by digging up the plant, carefully cutting the root system into sections with healthy leaves attached, and replanting each section separately; essentially, dividing the plant into multiple new plants with their own root systems.
Key points about propagating pickerel weed:
Division time: Best done in late winter or early spring when the plant is dormant.
Tool to use: A sharp knife or pruners to cut the rhizomes.
What to look for: Ensure each divided section has a good amount of healthy leaves and rhizomes.
Repotting: Plant the divided sections in a suitable location with similar growing conditions as the original plant.
Other propagation methods (less common):
Seeds: You can also try propagating pickerel weed from seeds, but this method can be slower and less reliable.
Considerations: If you want to prevent your pickerel weed from spreading too much, consider planting it in a container with no drainage holes.