As long as they are cut fresh and sent the same or next day… over night…should be good…recut the bottom of the stem…place cuttings in water at last 2 leaf nodes in water they should start roots in a week or so. Coleus are the easiest plants to over winter from cuttings.
Were the cuttings labeled… there are so many beautiful leaf's . Which one's did you order? From?
Did directions come with them or guaranteed to be fresh cuts?
Good luck. Keep us posted.