I'm attempting to grow some Sequoiadendron giganteum (Giant Sequoia) from seedlings I received from a friend. I plan to bonsai them, since i don't really have the need or space for a 300ft tree.
The 2 that had leaves were green and awesome when I got them. I put them under a 480 Lumen 5000k led lamp at about 3' above, and near a heat register. I gave them 12 hours of light, and they started dying. Obviously, they weren't happy.
I have 3: #1 is still sprouting and is difficult to judge, #2 has 4 leaves and is now mostly black in the stem and curled over, and #3 has 4 leaves which have browned a bit and the stem has a small amount of brown and curling towards the top. It has 4 new leaves that haven't turned brown yet, but the top is now at 90deg from vertical.
So, realizing there was obviously a problem, I started attempting to mitigate the situation with the following:
I've been keeping the soil moist (not wet) by misting, and have attempted to raise the humidity by setting the pot above a dish of water. It being winter, I knew this could be a problem, but didn't realize how dry it was.
For light, I'm using an 800 Lumen, 5000k led bulb sitting about 12 inches from the pot, that is timed to stay on 12 hours.
3 days, and I'm not seeing any improvement.
My question is: what am I doing wrong? Is there any saving any of these, or should I get some new ones?
Thanks for the help.