Wallflowers prefer consistently moist soil during their active growing season but dislike waterlogged conditions. Allow the top few centimeters of soil to dry out between waterings.

Reduce watering significantly during winter dormancy to prevent root rot, especially when grown in containers.

Prune wallflowers after flowering to maintain a tidy shape and encourage bushier growth. Remove spent flower stems to prevent self-seeding if not desired.

Harder pruning can be done in early spring to remove any dead or damaged wood and rejuvenate older plants.

Wallflowers are easily propagated from seed sown in spring or autumn. They can also be propagated from semi-ripe cuttings taken in mid-summer. Root cuttings can be taken in late winter.

Cuttings and seedlings benefit from warmth for establishment.

Perennial wallflowers benefit from repotting every 2-3 years, ideally in spring before new growth becomes vigorous. Use a well-draining compost mix.

Ensure the new pot offers adequate space for root development but avoid excessively large pots which can retain too much moisture.