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

Guessing from the wall you're in the UK? A megapotamicum is fairly common in gardens here, especially in the south.

T̶r̶y̶ ̶T̶r̶a̶d̶e̶s̶c̶a̶n̶t̶i̶a̶ ̶z̶e̶b̶r̶i̶n̶a̶.̶ ̶. No. Looks more like Tradescantia fluminensis. Tradescantia fluminensis - Wikipedia - Tradescantia fluminensis is a species of spiderwort native to South America. It is one of several plants known by the common name wandering Jew. Other places say it is from Brazil. ETA; Someone keen in taxonomy might get more information here: Tradescantia fluminensis in Global Plants on JSTOR - Compilation Tradescantia fluminensis

It is a hydrangea, and is finally getting a chance to grow. And you are asking if you should trash it?! If it were mine, I would let it get some size and see what cultivar it is before deciding to trash it. It may turn out to be something that doesn't float your boat, but for me most hydrangeas that are hardy enough to bloom are attractive.