Katsura: Cercidiphyllum japonicum , no pretreatment needed, sow @ 70úF for germination in as little as 2 weeks

Thank you so much for your speedy response morz8! I put that up last night and you responded within a day! Just two more quick questions. What kind of medium do you suggest and how deep should they be sown? Thank you so much for your time :)

Sow the small seed thinly, and barely cover, some light may be beneficial to germination. You can cover with a bit of grit or coarse sand - will help the seed to stay in contact with the moist medium while still letting some light through. Otherwise use a light layer of your same potting medium. Prepare nursery pots using a moisture retentive yet well draining potting medium.....many are good, stay away from Hyponex brand. Scatter the seed, mist with water, cover lightly with grit and mist again. I like roots of trees, shrubs, to have room immediately to grow down - I sow in pots with 5" depth. If you are very attentive and not likely to forget to check, you can cover tops with saran wrap - removing it immediately at the first seed germinating so circulation of air is increased.

Thank you so much! You have really been a real help to me :)
As you know I love this tree and just can't wait to grow it. Hopefully I'll post some pictures of them growing when they do. THANKS :)