Mushroom.
A magnum is a large bottle, carboy's are another.
A very familiar member is the mushroom.
Sequoia
another word for very large
No. The confection called a truffle is made from chocolate, butter and sugar, and sometimes liqueur. Very yummy, but no fungus - the two simply share a common name.
A mansion.
Methusela
A synonym for a very large area within a continent is a region.
very close
A very large pot that ends in "at" is called a "cauldron." Cauldrons are typically large, deep vessels used for cooking or boiling liquids, often associated with folklore and witchcraft. They have been used historically for preparing food, brewing, and even in rituals.
behemoth
sounds like a promlem. is it gettng enough water? and signs of pests or fungus?