Solidago gigantea is a North American plant species in the sunflower family. Its common names include
tall goldenrod and
giant goldenrod, in reference to its height of up to 2 m tall, rather large for the genus,
smooth goldenrod and
late goldenrod. It is a widespread species known from most of non-arctic North America east of the Rocky Mountains. It has been reported from every state and province from Alberta to Nova Scotia to Florida to...
(Wikipedia)