Freeze drying flowers in their natural form Flower preservation of flowers means the extraction of moisture held in the flowers by which the process by which water is removed from a frozen material by sublimation and processes, primary drying and secondary drying. By pre-treating all our flowers before this process, this provides the perfect material of then a preserved flower. All of our flowers are preserved in a 3d form ( not pressed ) but in the same shape as before they go through this process. Please note that when we are extracting the moisture through this process, depending upon the age of the flower, the flower may darken or lighten in colour. Our process to gently remove all the moisture from the flowers takes a minimum of 14-16 weeks and then further time to design and cast your flowers within the requested paperweight design. It is vital to make sure the moisture is removed slowly from the flowers so they retain as much colour as possible as well as the 3d formation. The flowers are then sent across to the designers to create your flower paperweight.