Some of you know me from the “other board” know that I like growing trees from seed. I gave my father two Metasequoia In Spring, 2015 that I sprouted in spring of 2014.
My dad is a zone colder than me (I’m in 7a Maryland, he’s in 6a Ohio, they used to be classified as 5b).
Still, in his climate and only average, fairly heavy soil, they are now 13’ and 11’ and even showing a real root flare, after four seasons of growth! Not bad, if I do say so myself.