Somebody is going to be offended by my post, but I believe such rare and precious seeds should not be send to people in temperate climates to play around with. Send them to forum members with appropriate climate, let this species get established and than everyone can have fun with the seeds as much as they want years down the road.
lol...it's like being racist towards people in temperate climates...
I understand not sending seeds to the arctic...
but there are some people with greenhouses in temperate climates who might have a better chance of keeping this species alive, than those who are planting them in-ground at a tropical location.
also, I don't think the russels sweet would be extremely cold sensitive...it may be able to hand temps below 32F quite easily.
(lol i'm not saying all this because i want seeds! I've got too many plants to deal with as is!)