To put it simply, bacteria is the enemy. It’s important you keep your vase and water clean. This is why you should ensure there are no leaves or other foliage below the water line.
Don’t forget to remove outer protective petals. Our blooms have travelled across the world, so if the outer rose petals are slightly brown then they have done their job well.
Tool checklist: Sharp scissors, sparkly clean vase, fresh water, supplied flower food and a loving touch.