If not, close them up and check every two days or so. Remove the flowers and, if needed, use a blow dryer set on cool to remove traces of the silica gel. Quick, most flowers dry in a week to 10 days. Can be inexpensive if you do it yourself. Flower shape and color more natural than dried.
Flowers become brittle, colors darken and flowers are fragile.
Results not very natural with roses. Flowers last a little longer than with the air-dried method. Pressed Flowers Flowers with flat faces like pansies, petunias, violas and daisies press well. Thick flowers like roses must be pressed petal by petal and then the look of the flower recreated. To press your own flowers, place flowers between sheets of blotting paper and put into a flower press or make a press with two boards and weights.