1 object (clinker charcoal briquette or a piece of coal, brick or sponge)
6 tbsp. non-iodized Morton salt
6 tbsp. household bluing
6 tbsp. water
1 tbsp. ammonia

Mix the ingredients and pour over the object in a wide dish.  When the object is saturated add colored ink or fabric dye or food coloring for effect.

Try several colors, unmixed (do not use iodine).  Rub dish edges with petrolatum to prevent the flower from growing over the side.  Mix and add another recipe to continue growth.  Keep flower moist.

How does it grow?  The solution is absorbed by the object, then evaporates upon reaching the air, leaving the salt behind.  The bluing is the key, as it causes salt to crystallize out of the corners and edges of other irregular-shaped crystals rather than on the sides of cubic crystals.

I think the members will have very good luck with this Salt Flower recipe. We have made this one and it is beatifull.