There's nothing in your photo to show the scale or the rest of the plant. Looks like Sidalcea candida to me -- or some relative (but I am seriously not an expert): http://www.swcoloradowildflowers.com/White%20Enlarged%20Photo%20Pages/sidalcea.htm http://plants.usda.gov/core/profile?symbol=SICA3 Lots of relatives it could be: http://plants.usda.gov/java/ClassificationServlet?source=profile&symbol=SIDAL&display=31 and USDA's photos of the same (3 pages' worth): http://plants.usda.gov/java/imageGallery?category=sciname&txtparm=Sidalcea&familycategory=all&growthhabit=all&duration=all&origin=all&wetland=all&imagetype=all&artist=all&copyright=all&location=all&stateSelect=all&cite=all&viewsort=25&sort=sciname

and malva is mallow.. SCORE!!! ... lol... pretty bored out here.. if you cant tell.. i have been holding the naming joke in store.. for months.. waiting for the right post.. lol .. ken ps: i bought a mallow once.. from a very high end botanical garden ... 10 years later.. i AM STILL TRYING TO KILL IT OFF .. and i swear in 10 years.. it has never seeded a second time.. and i am still getting seedlings ... i hate them with the passion of a million burning suns ... they should have known better .. they also sold me creeping jenny ... i never went back to their spring sale ... mine were annual.. in my zone .. but apparently.. not the seed ... pps: it might be a challenge to grow it indoors ... in winter.. especially if you have a forced air furnace.. winter humidity is low for flowering plants indoors ... good luck

" Farfugium, although I think it is now in the Ligularia camp" I believe it's the other way around :-) Farfugium japonicum used to be known as Ligularia tussilaginea but was reclassified about 25 years ago.

Sure looks like stinging nettle to me. Are there hairs on the stems? With my old PC (and old eyes) it's hard to tell in the pic. Flowers on the side & hairs on the stems are a sign of stinging nettle. There are a few look a likes. I planted some in containers on purpose once. Powerful plant.