Tuberous comfrey can be propagated primarily through sowing. Successful propagation involves using fresh seeds, which should have a higher germination rate. It's essential to prepare a well-draining soil mix and maintain consistent moisture without waterlogging. Surface-sowing is recommended as the seeds require light to germinate. For best results, a warm propagation mat may encourage faster germination. Patience is key, as tuberous comfrey's seeds might have varied germination times.

Japanese butterbur is a robust perennial that thrives in wet environments, often alongside streams and in moist fields. Its spreading nature makes it an excellent candidate for division, a straightforward propagation method, which involves separating the plant's rhizomes or roots to create new individuals. Carefully excavated sections should include adequate roots to support growth when replanted in a similar habitat. This allows japanese butterbur to establish quickly and continue its vigorous growth. The process, ideally performed in the plant's dormant phase, ensures genetically identical offsprings, providing a consistent display of japanese butterbur's notable large, kidney-shaped leaves and tall flower spikes in gardens.

Roundhead bushclover is a perennial herbaceous plant native to North America, renowned for its resilience and adaptability. This species thrives in prairies and open woodlands. Propagation is commonly achieved through sowing its hard-coated seeds, which may require scarification to enhance germination. For optimal results, one should adopt direct seeding into a prepared bed or container, ensuring seeds are just lightly covered with soil. Regular moisture and good sunlight can facilitate successful plant growth once germinated.

Purple Loco-Weed, commonly found in prairie and open woodland environments, has certain preferences for successful propagation. While this beauty primarily reproduces through seed, gardeners may gravitate towards vegetative propagation for more control. Cuttings should be taken from healthy, vigorous parts, ensuring a clean slice with sanitized tools below a node. Rooting hormone can aid the process, but patience is key as this species can take time to establish from cuttings. Consistent moisture and indirect light support rooting without promoting rot or stress.

Belonging to the mint family, spike lavender can be effectively propagated using cuttings. For successful propagation, choose a healthy, non-flowering shoot and cut a segment of about 6-8 cm in length. Strip the leaves from the lower half of the cutting, and dip the end in rooting hormone to accelerate root development. Plant the cutting in a mixture of perlite and peat for good drainage and moisture retention. Ensure the medium stays moist but not waterlogged, and provide indirect light until roots establish, after which the new spike lavender can be transplanted.

Panicled closed-mouth orchid, a member of the orchid family, thrives when propagated through division. To successfully propagate panicled closed-mouth orchid, gently separate the clumps of pseudobulbs, ensuring each new section has adequate roots. Plant these divisions in a well-draining medium suited for orchids, maintaining high humidity and indirect light to encourage growth.

Rabbiteye blueberry is best propagated in autumn or winter through methods like cutting and layering. Propagation may be moderately challenging, with successful signs including root development and new growth. Ensure proper moisture levels and use rooting hormones for better results.

Indigenous to the Channel Islands, island mallow is a perennial shrub renowned for its vibrant flowers and resilience. To propagate island mallow effectively, commence with healthy, disease-free cuttings. Preferentially select semi-hardwood stem segments that have begun to mature but still retain some flexibility. Use a sharp, sterilized tool to make clean cuts, ensuring at least one leaf node is present. Dipping the cut end in rooting hormone may enhance root development before planting in a well-draining soil mixture. Regular misting and a stable environment will support root growth, though patience is key as island mallow can take several weeks to establish.