Verbena bonariensis

Full sun.

Drought-tolerant once established.

Free-draining soil of low to moderate fertility; self-seeds readily in favourable conditions.

Leave stems standing over winter for frost protection and structure; cut back to the base in spring once new growth appears.

Needs nothing. On poor, dry ground it stands upright and flowers for months; fed and watered it grows taller, softer and leans over its neighbours.

It seeds itself everywhere — the simplest propagation is to lift the seedlings that appear round the parent and move them where you want them. Softwood cuttings in early summer are the way to keep a particular plant going.

Full sun.

Standard bedding/container watering.

Free-draining, moderately fertile soil or container compost.

Deadhead regularly to keep flowering through summer; no overwintering needed, as it's typically grown as an annual.

In a basket or container feed weekly with a high-potash liquid feed for the whole display — this is a plant asked to flower non-stop in a few litres of compost, and it stops within days of being neglected.

Softwood or tip cuttings in late summer, overwintered frost-free under cover. Most named bedding verbenas are treated as annuals and simply bought again each spring, which is the honest low-effort answer.