Seabuckthorn Seedlings

I'm starting some Seabuckthorn from seed and have had success germinating them and now they are growing to about 2-3 inches and starting to put on 2nd leaves. I'm new to starting trees from seed and was wondering about potting them up. Do you generally bury that long section of the stem when potting on? I want to have some strong plants moving forward and generally do this with all my annual crops when potting up to the next container. They don't seem as fragile as my goji berry and lilac plants.

Thanks.

Any chance you could describe your seed source and germinating procedure?
I tried several sources and ways to get germination, I had very poor results and assumed it was just a sea buckthorn thing.
Out of the plants I had grow, they remained small for awhile, I'd pot them up and be nice to them for a summer. I would be careful potting them up to that long stem, I had some issues with damping off kill a few of mine.
Good luck!

I picked the seeds up on eBay from 'treeseedsplus' seller. I have been doing some germination tests on tree seeds with stratification and not, in ground, in pot, damp paper towel, etc. I guess I'm just experimenting with a bunch of things now. I spend $20 on all sorts of seed.

These seeds germinated without cold stratification on damp paper towels - I then transferred them into seeding trays and I've got about 50 plants right now - I'd be psyched if 10 made it.

How far down did you pot them?

I didn't plant them any deeper than where they germinated, I'd keep the long stem section above the soil.
I bet your seed was fresher than mine, the seed coats may not have been fully formed. Good to know in the future.
Anyone know how long Seabuckthorn takes to go from seed to fruiting? I've got 3 year old plants now, if I can get fruit I will really try to propagate them out.
They grew like gangbusters for me this year with no weeding/watering/care. I think they're one of those plants i am going to enjoy growing.