From Ground: Firstly, water your four o'clock flower plant sufficiently to moisten the soil around the roots. Using a shovel or spade, dig a trench around the plant which should be wide enough to include all of the plant's root system. Next, carefully lift the plant with spade underneath the root ball to keep it intact.
From Pot: Before removing four o'clock flower from the pot, water it well. Turn the pot upside down and gently tap the edge of the pot against a solid surface. Try to maintain as much original soil as possible around the roots to reduce the stress of transplantation.
From Seedling Tray: Water the seedlings and remove them gently with a spoon or a small tool to prevent damaging the delicate roots. Hold the seedling by its leaves to avoid crushing the stem.