To propagate black-eyed Susans, you have a few options, but one of the most common and successful methods is division. This can be done either in early spring when new growth is just beginning, or in the fall after the plants have finished flowering.
When dividing black-eyed Susans in the spring, it’s important to wait until you start to see new growth emerging from the ground. This is a good indication that the plants are coming out of dormancy and are ready to be divided. Start by digging up the entire root ball of the plant using a garden fork or shovel. Be careful not to damage the roots as you lift it out of the ground.
Once you have the root ball out of the ground, carefully separate it into smaller sections using a sharp knife or garden shears. Make sure each division has a good amount of roots attached to it. It’s also important to ensure that each division has some healthy looking shoots or buds, as these will develop into new plants.
After dividing the root ball, you can replant the divisions in their new locations. Make sure to choose a spot that receives full sun to partial shade, as black-eyed Susans thrive in these conditions. Dig a hole that is slightly larger than the root ball of the division and place it in the hole. Backfill the hole with soil, firming it gently around the roots to eliminate any air pockets.
Space the divisions about 12 to 18 inches apart to give them enough room to grow and spread. Water the newly planted divisions thoroughly to help settle the soil and encourage root establishment. Keep the soil consistently moist but not waterlogged during the first few weeks after planting to help the divisions establish themselves.
If you prefer to divide black-eyed Susans in the fall, you can follow a similar process. Wait until the plants have finished flowering and are starting to go dormant. Dig up the root ball and divide it into sections as described above. Replant the divisions in the same manner, ensuring they have enough space to grow and thrive.
It’s worth noting that black-eyed Susans can also be propagated from seed, but this method can take longer to produce mature plants. If you choose to start from seed, sow them in a well-prepared bed in the spring or fall and keep the soil consistently moist until they germinate. Thin the seedlings to the desired spacing once they are large enough to handle.
In my own experience, I have successfully propagated black-eyed Susans through division. I find that dividing in the spring when new growth is starting to emerge allows the divisions to establish themselves before the heat of summer. However, fall division can also be successful and gives the divisions a head start in the following spring.
Propagating black-eyed Susans through division is a relatively simple and effective method. It allows you to create new plants from an existing one, ensuring you have a continuous supply of these beautiful flowers in your garden.
