While this little unheard herb can be propagated through division and root cuttings, it can also be easily started by seed. But before you run out to your local gardening center, make sure that your garden is in USDA Plant Hardiness Zones 4 through 8. This range allows this herb to be grown as a perennial.
Once you have your seed, pull out your gardening calendar and count back four to six weeks from your local frost free date. This is the date by which you will need to start your seeds indoors.
Prior to planting your seeds, you will need to clean and sterilize the container. This step should only be skipped if you are using peat pots. While the pots are drying take your seed starting planting medium and moisten it with water until it is evenly moist. Next, fill each one of your containers with this planting medium and gently tap the soil down. Add more soil if needed.
Elecampane seeds need sunlight to germinate. In doing so, you will simply sprinkle the seed on the soil surface and gently push down with your finger. Once all the seeds have been planted, mist the soil surface with water.
Place your planted pots on a sunny window. Continue to monitor the soil moisture and in 12 to 30 days you will begin to see evidence of seed germination. While elecampane seeds and seedlings do not like a wet soil, they do require one that is evenly moist.
If you planted seeds in individual pots, you can keep them there until you can plant them outside. On the other hand, if you simply sprinkled seed in a couple of pots, you will need to remove the seedlings and place them in their individual containers.
Continue to keep the seedlings in a sunny location until after your local frost free date. Once that date has arrived, you will need to harden off the seedlings prior to planting in the garden. This process is easy to do and only requires you to slowly expose the seedlings to the outdoor environment over a one to two week period.
When selecting the garden location for elecampane, make sure the soil is moist but well draining. Also, this plant can survive in partial shade to full sun. The one requirement that this plant demands is space. Elecampane should be planted with 24 inches between each plant. If you are going to plant this herb in rows, make sure that you space them 36 to 48 inches apart.