Put the vinegar, sugar, salt, turmeric and 3 cups water in a medium saucepan. Bring to a boil and stir until the sugar and salt dissolves, then reduce the heat and keep warm.
Divide the cucumbers, okra and onion among three 1-quart sterilized jars. Evenly distribute the pickling spices among the jars. Slowly add the sweet vinegar water to the jars and seal with lids, then refrigerate. These pickles can be enjoyed right away but improve in flavor after several days.