To propagate Johnny Jump Ups, the most common method is by sowing seeds, either directly outdoors in early spring or starting them indoors several weeks before the last frost; you can also propagate them by dividing established clumps or taking stem cuttings, ensuring each cutting has a few leaves and planting them in a moist, well-draining medium. 

Key points about propagating Johnny Jump Ups:

Seed propagation:

When to sow: Sow seeds directly outdoors in early spring or start indoors 6-8 weeks before the last frost. 

Soil preparation: Use a well-draining seed starting mix. 

Planting depth: Lightly cover seeds with soil, as they need light to germinate. 

Watering: Keep the soil moist until germination.

 Transplanting: Once seedlings have a few sets of leaves, transplant them outdoors to a sunny or partially shaded location. 

Division propagation:

When to divide: Early spring or late fall when the plant is actively growing. 

Method: Carefully dig up the plant and gently separate the clumps, ensuring each division has roots. 

Planting: Transplant the divisions into prepared soil, spacing them appropriately. 

Cutting propagation:

When to take cuttings: During the growing season 

Cutting selection: Take healthy stem cuttings with a few leaves. 

Rooting: Dip the cut end in rooting hormone and plant in a moist potting mix. 

Care: Keep the cuttings in a humid environment until roots develop. 

Important considerations:

  • Light requirements: Johnny Jump Ups prefer full sun to partial shade.
  • Soil conditions: Well-drained soil with added compost is ideal.
  • Spacing: Space plants 6-12 inches apart.
  • Deadheading: Regularly remove spent flowers to encourage continuous blooming.