Strip the leaves from the flower stems. Cut the flower heads off the top of the stems.
Spread the foliage and flowers out on a window screen. Place the flowers face up. Leave a half-inch of space between each leaf and flower so air can circulate freely around the drying geraniums.
Set the screen on top of two bricks or two sawhorses, or in any manner that allows air to circulate freely both above and beneath the window screen. Set up the screen in a warm, dry area that is way from direct sunlight.
Check the geraniums every two to three days. The foliage is dry enough for use when it feels brittle. The flowers are ready when the petals feel papery and the center of the flower has completely dried. Drying typically takes one to two weeks.
Place the dried geraniums in a large bowl. Add 1 tbsp. of powdered orris root to every pint of flowers. Stir gently to combine. The orris root, available from florists and craft stores, acts as a fixative that helps preserve the scent of the geraniums.