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Pick flowers when they are dry. Harvest flowers when they are about to open or just before their peak. Select flowers with naturally flat blooms, like violets and daisies. Remove any obvious stamens from your flowers. Press leaves, ferns, and grasses if you want to accent your flowers.

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The best time to pick your flowers is in the morning after the dew has evaporated. This is when they will be the most fresh. Pressed flower buds are lovely, as are flowers which are fully bloomed. Try to pick flowers in a variety of stages for a natural look. Other flowers that press well include single-petal roses, Cosmos, California poppy, and Queen Anne’s Lace. Flowers with bulky blooms, like roses or carnations, take much longer to dry and don’t look as nice when they're pressed. You may want to hang them to dry them instead. Some flowers, like lilies, have stamens which protrude from the petals. Remove these before you press the flower or the stamen will leave a stain on the dried petals. If you're going to display your flowers in a frame, you can add other natural touches by drying leaves, grasses, herbs, and ferns in your press.