Jack,
What growth medium are you using?
What is temp in cold room? I assume its indoors . When will you expose it to light?
bill
Bill,
I presume you are talking about the Seguin trees I'm buying from the wildlife group. If so, here is my plan:
1) When I receive them next week (bare root), I'll plant them in 3 gal RB2s. They said they should fit.
2) For medium, I'll use the same mix as for my other seedlings in RB2s. It is 50% Promix (Bx or HP or whatever they have in stock), and 50% bark chunks. Normally I use mini-pine-bark nuggets from lows for the bark chunk portion. Two summers ago, they took down a tree in my neighbors yard and chipped it. I let them dump the pile in my back yard and I've been mixing it with grass and letting it compost. It is still chunky and free so I'll use that for my bark chunks. I fill a 3 gal RB2 with promix and dump it in a tub and then fill it with the bark chunks and dump that in the tub. I then add two capfuls of Osomocote Plus (or straight Osmocote and two tablespoons of Micromax) to the tub and mix them all together.
3) I will overwinter the seedlings in my cold room with my pawpaws. My cold room is a room in my basement closed off from the rest of the basement. It has one small south facing window. I keep that window open. I have a temperature sensor in that room. (Details on the temperature/humidity monitoring I do here:
http://www.habitat-talk.com/index.php?threads/acurite-monitoring-for-indoor-tree-growers.6608/). The temperature in the room varies but stays cool enough that trees don't break dormancy. I don't let it get below freezing. If I get an alert on my phone the temp has gone down to 33 degrees, I close the window.
4) I will keep them there until they have received enough chill hours. I'm not sure what that number is yet but I plan to start researching that. If I find out, I'll bring them into my grow room, warm them up, and put them under lights after they have had sufficient dormancy. After it warms up in the spring, I'll move them to my deck.
Thanks,
Jack
