What does it meant that a plant grows from Rhizomes?

I am new to this term. What is a Rhizome first of all and if a plant , such as Canna or Salvia grows from Rhizome each year , what exactly does that mean? They die to the ground and reseed maybe?

What does it meant that a plant grows from Rhizomes?
Its a swollen root that can lie dormant and then regrow when the conditions are right.
Reply:The best I can do is that they grown underground.... Ginger is one of the most common Rhizomes.... sorry I can't be of more help.
Reply:Several plants like chrysanthemums reproduce vegetatively, that means they don't just rely on seeds. The roots produce large swollen parts - these are rhyzomes. At the end of the growing season, the upper part of the plant dies back and the next year, the new shoots %26amp; leaves grow from this rhyzome.
Reply:There are rhizomes, tubers, bulbs, corms, roots... Each have different characteristics. Here are some links with lots of info.

http://search.yahoo.com/search?p=rhizome...
Reply:UNERGROUND ROOT STRUCTURE. THEY ARE LOCATED IN THE RHIZOSPHERE WHICH IS THE IMMEDIATE ENVIRONMENT OF ROOTS WHERE BIOLOGICAL ACTIVITY IS HIGH.
Reply:A Rhizome is a fleshy root, it is similar to a bulb or corm , if it is left under the soil it will often die back in the winter and come up again. If you live where you may get bad frost it would be best to mulch (cover over) the ground over the Rhizomes with straw or old compost. You can dig the Rhizomes up and plant them out again as you would do with Dalia's. Flag Irises have a good Rhizome which you can often see from above the ground

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