Yellow bells are easily propagated through cuttings taken in the spring or summer. To do this, you will need a sharp knife or pair of garden snips, a small pot with drainage holes, a plastic bag, a rubber band, and rich, well-draining soil. Once you have the materials, follow the steps below:
In the spring or summer, use a sharp knife or pair of garden snips to remove a tip cutting that is several inches long.
Bury the cut end into rich, well-draining soil. Moisten the soil.
Cover the cutting with a plastic bag to keep in moisture. Secure the bag around the pot with a rubber band.
Place the cutting in a warm area with bright, indirect lighting.
Keep the soil moist, but not soggy.
Once there are several inches of new growth, remove the bag and repot into a larger pot, if needed.
Begin hardening off the plant and move it outdoors.
How to Grow Yellow Bells From Seed
You can also start yellow bells from seeds you’ve collected from the plant. To grow this plant from seed, follow these steps:
Collect seed pods from the plant and wait for them to become brown and dry. Then crack open the pods and remove the seeds.
Fill a small pot with rich, well-draining soil. Peat moss or vermiculite work as well.
Lightly cover the seed in the growing medium.
Water the soil, keeping it moist but not soggy.
Keep the pot in a warm area with bright, indirect lighting. Germination should occur in two to three weeks.
Potting and Repotting Yellow Bells
Yellow bells have a relatively compact size that allows them to grow well in containers. Choose a well-draining pot at least 12 inches wide or larger, depending on the shrub size. Clay pots are a great choice, as these mimic well-draining soil and wick away excess water.
The fast growth of these plants means you will need to repot them more often, since they’re likely to outgrow their container size. To do this, gently tip the pot onto its side and tap the outside of the pot to loosen the root system. Slide the plant out and set it into a larger pot. Fill it with well-draining soil, burying the shrub to the same height it was before.