Collect seeds as they ripen.

Deadhead flowers to encourage a constant display of blooms.

Feed containers with tomato feed every two weeks.

Take cuttings of woody herbs, including lavender and hyssop, choosing non-flowering shoots.

Sow hardy annuals in sunny spots to provide early summer color next year.

Remove any spent hardy annuals if you don't want them to self-seed.

Plant autumn bulbs, such as colchicums, sternbergia and nerines, in pots and borders.

Keep camellias and rhododendrons well watered through late summer while their flower buds are forming.

Trim lavender once flowering is over to maintain a compact, bushy shape, but avoid cutting into old wood.

Prune rambling roses, removing up to a third of stems that have flowered, and tie the rest to supports.

Calendula

Centaurea cyanus (cornflower)

Daucus carota (Queen Anne’s lace)

Eschscholzia californica (california poppy)

Myosotis sylvatica (forget-me-not)