Dahlias prefer consistently moist soil but not waterlogged. Water deeply at the base of the plant, especially during dry spells. Allow the top 2-3 cm of soil to dry out slightly between waterings.

Reduce watering in cooler weather to prevent root rot.

Deadheading spent blooms regularly encourages more flowering. Pinch back young plants to promote bushier growth. For larger blooms, disbud by removing side buds, leaving only the main terminal bud.

Remove any yellowing or damaged leaves promptly.

Dahlias are typically propagated by division of their tubers in early spring before new growth begins. Ensure each division has at least one eye or bud.

They can also be grown from seed, though this may not result in true-to-type blooms.

Dahlias grown in pots benefit from repotting annually in spring to refresh the soil and provide space for tuber growth. Choose a pot that is slightly larger than the previous one. Ensure good drainage in the new pot.