I would do it when they have two or three leaves or are a couple of inches tall. I'd very carefully separate them, leaving as much soil as possible around each one and gently move them into separate pots that you can move out of a heavy rain or cover if it freezes.

Here's the soil recipe that I used:
⢠One part course sand
⢠Four parts 1/4" pine bark
⢠One part leaf mold or compost that doesn't contain animal waste

This post was edited by fogbelt_steve on Sun, Mar 17, 13 at 3:28

Thank you so much! I will look up where I could get everything for that soil, thank you for sharing :)

How should I get them out of the pot when it is time?
My boss has a Japanese Green Maple, that has hundreds of little "babies". We just very gently pull them up by their stems.... Should I do that with these, or a different way?

Any special planting techniques to planting them? I want to save as many as possible

My 2â ...

Take an old knife and run it around the inside of the pot to loosen the dirt from the sides of the pot. Then carefully push on the bottom of the pot to push the whole works out. You might need to turn it upside down and let gravity work for you. You can then use the knife to separate each seedling as carefully as you can. It might help to work on a table while sitting in a chair. Have your new pots ready with planting mix, make a depression in the mix with your fingers, place the plant in the hole and push the dirt in around it. After watering, it might be a good idea to keep them out of hot sun or total shade until you can see that they're growing OK.

I followed the instruction I found online and sowed it about 2 months ago but it is not yet sprouted. I did not do hard freeze, after I read the posts here I put it in the freezer. I use a very small container.

Caelian

"pull them up by their stems"

I always handle seedlings by the leaves, not the stem.
They have only one stem and too much pressure can mortally damage them. They have several leaves plus the capacity to grow more, so I consider them expendable.