if it is lunaria, you can just toss them onto the soil. at least, that is how they keep coming back for me each year. also, if that is your plant, they are biennials and will sprout and grow a leafy rosette the first year and flower/set seed the following year. they seem difficult to transplant so scatter the seeds where you want them to grow.

Yes, visiting a potential tree farm to buy from had planted about 50 6' trees and many had fruit. Many nurseries I deal with recognize the fact that it will fruit, though they don't really elaborate on how much it fruits. Most internet sources for sweet gum cultivars mention fruit usually when they are fruitless, and there are a lot of sites for 'Silver King' when nothing regarding fruit is mentioned (I know this doesn't mean they fruit, but it helps the case). I don't think any sweet gum can truly be considered fruitless, though I'm crossing my fingers that Happidaze will stay fruitless. I've had 'Rotundiloba' revert back to species and fruit before several times, but this year i saw #5 5-6' trees fruit with no reversion.

They come in silver? Sign me up! I love my polyneura - would be super excited to find another variety...

The flowers are white with a yellow center. The flowers are normally cut off since the plant seems to get scraggly if they are not. I grow it for the foliage. The flowers are very similar to Anaphalis margaritacea shown below.