Identify the genus of orchid you have. For most people, that information will be on the tag that comes with the plant. If you have no tag, you should take the plant to a specialist for identification. Alternatively, take a photo and send it to an orchid expert or your local university extension and ask for help.
Remove the spent blooms of a Phalaenopsis genus orchid by situating the open blades of the scissors directly beneath the bottom flower on the stalk after all the flowers on the stalk have faded.
Look carefully at the flower stalk to ensure that your scissors are above the first node below the bottom flower.
Close the blades of the scissors swiftly to ensure that you cut, rather than mash, the stalk, severing the faded blooms. Orchids from the Phalaenopsis genus often rebloom, growing another flower stalk from the node you cut above. If you damage the node, the orchid is unlikely to rebloom until the next blooming season.
Remove the flower stalk down at the bottom by the basal leaf for all other genus of orchids, using the same deadheading method as for a Phalaenopsis orchid.