Deadhead regularly (optional)

Once a plant has flowered, it puts energy into producing seed at the expense of more flowers. You can encourage more blooms by removing the flowers as they fade and before seeds can develop. This technique is known as deadheading. Deadheading also improves the look of the current display. Some flowering plants, are also worth deadheading to prevent them from self-seeding themselves all over the place and causing a weed problem.

Use finger and thumb to pick or snap off each dead head where it joins the stem, or secateurs to cut just below the flower head. Avoid damaging buds or developing growths immediately below the flower.