Wrap the entire bundle of plants in newspaper and place in a crush-proof container for shipment. Do not add water. Wrap in plastic to retain moisture. Collect a handful of feeder roots and place in a plastic bag. For cankers include healthy portions from above and below diseased area.
Press leaves flat between heavy paper or cardboard.
Wrap fleshy parts in dry paper. Place root system in plastic, if possible. Place the sample flat between a layer or two of dry newspaper, paper toweling or similar absorbent material. Try to prevent excessive folding of the leaves and place flowers so that you are looking into the center of the flower. Pack the wrapped bundle in plastic, preferably with a piece of cardboard to keep the sample flat.