Sorry to bump. But wait until the wings turn brown and necrotic looking. That is when to harvest. Basically, when they fly best!
That seed in your pic looks to be very fresh and the wings will be heavy.
thank you all
if these do sprout I will reply here as proof summer harvested Japanese maple seeds are ok.
I don't have many in the fridge so don't want to cut any open in case it is ok.
HI. I picked some fresh seeds that were green in colour straight off a japanese maple in the middle of summer. DEcember 28th to be precise. (Summer in Aus)
I have had them in the frigde since then, stratifying away. No sprouts yet at 84 days.
I am concerned the seed wasnt ripe and won't ever...
After about 120 days in the fridge stratifying the roots on this seed started sprouting. I have sprouted about 10 seeds I bought on ebay and this is the first to exhibit this behaviour. Also all my other seeds only took about 90 days of fridge time to sprout.
It looks like two roots are...