Black-bindweed prefers consistently moist soil, especially during its active growth phase. Water thoroughly when the top 2-3 cm of soil feels dry. Avoid waterlogging, as this can lead to root rot.

Reduce watering during cooler months or when the plant is dormant to prevent overhydration.

Pruning black-bindweed is primarily for controlling its vigorous vining habit and preventing it from smothering other plants. Remove unwanted growth regularly by cutting back stems to desired lengths.

Pruning can be done anytime growth becomes problematic, focusing on tidying and managing its spread.

Black-bindweed readily self-seeds, making propagation primarily through seed. Seeds can be sown directly in the garden in early spring as soon as the soil can be worked. They germinate quickly under favorable conditions.

No complex propagation techniques are typically required for this species.

Repotting is generally not applicable as Black-bindweed is an annual weed, typically not grown in containers.

If it's accidentally cultivated or managed in a confined space, and needs relocation, it's best to do so with minimal disturbance to the root ball. This is usually done in spring before significant growth occurs.