Giant ironweed primarily propagates through sowing and spring is the ideal season for it. It has moderate difficulty in propagation. Successful propagation is marked by new leaves and shoots emerging. Adequate moisture is essential during germination.

Curry plant is effectively propagated through cuttings, which should be taken from the semi-hardwood part of the plant. Start by selecting healthy, non-flowering stems to increase the chance of successful rooting. A rooting hormone can be applied to boost root development. Keep the cuttings in a well-draining medium and maintain consistent moisture without waterlogging. Providing a warm environment and indirect light will support the growth of new roots. Once established, transplant carefully to avoid disturbing the root system.

Tree tobacco's ideal propagation season is during Spring and Summer. The preferred method is by cuttings, which is moderately difficult. Signs of successful propagation include new leaf growth. Ensure proper humidity and rooting hormone for better results.

Siberian peashrub, a hardy plant, is best propagated during Autumn and Winter through preferred methods of cutting and layering. Propagation can be moderately difficult, but successful growth is typically signaled by sprouting leaves. Ensure proper moisture level for best results.

The ideal propagation season for copperleaf is spring and summer, primarily through cuttings. It has a moderate propagation difficulty. Successful propagation is indicated by new leaf growth. Ensure cuttings have a healthy, well-hydrated parent plant for best results.

Beaked hazelnut is apt for propagation through cutting and layering, preferably during autumn and winter seasons. Moderately easy to propagate, lookout for fresh growth as a sign of successful initiation. Adequate soil moisture and protection against frost can improve success rates.

The preferred propagation method for garden star-of-bethlehem is to plant tubers in Spring. Propagation is relatively easy and successful growth is indicated by new shoots emerging. Avoid over-watering during propagation to prevent rot.

Roundleaf greenbrier is typically propagated through softwood cuttings in the spring or summer, or through compound/serpentine layering. Propagation difficulty is moderate, but signs of successful propagation include new growth on the cutting or new roots on the layered stem. To ensure success, make sure the cuttings or layered stems are kept moist and in a warm, bright location.