How much is the price of tall grass Reed seedlings? When will it be planted, flowered and harvested? What are the planting techniques?

Reed is also called Reed, Reed leaf, Reed flower, Reed stem, Reed root, asparagus can be used as medicine. Growing in irrigation ditches, river embankments, swamps, etc., growing all over the world. So how much is the price of Reed seedlings? When to plant and blossom