Erigeron, commonly known as the Fleabane, is a large genus of flowering plants in the family Asteraceae, native to North America and Eurasia. They are typically herbaceous perennials or annuals, with daisy-like flower heads that come in a range of colours, including pink, purple, blue, and white.
Here are some horticultural notes on the genus Erigeron:
Soil: Erigeron plants prefer well-drained soil that is rich in organic matter. They can tolerate a range of soil types, including sandy and clay soils, but they do not like soils that are consistently wet.
Sunlight: Erigeron plants prefer full sun to partial shade. They can tolerate some shade, but they will not flower as profusely in shady areas.
Watering: Erigeron plants require regular watering, particularly during dry spells. However, they do not like to be overwatered, so make sure the soil has good drainage.
Fertilization: Erigeron plants do not require a lot of fertilizer, but a light application of a balanced fertilizer in the spring can help to promote healthy growth and flowering.
Pruning: Erigeron plants do not require much pruning, but deadheading spent flowers can help to encourage additional blooms.
Propagation: Erigeron plants can be propagated from seed, stem cuttings, or division. Seeds should be sown in the spring, while stem cuttings can be taken in the summer. Division should be done in the spring or fall.
Pests and diseases: Erigeron plants are generally resistant to pests and diseases. However, they can be susceptible to powdery mildew, particularly in humid conditions. Regular watering and good air circulation can help to prevent powdery mildew.