Question
Tom,

Thanks for taking time to answer my question.  I may have asked this before, but i can't find your answer now.  
How do I plant American Sycamore seeds directly into the ground?  I don't want to grow them in a pot first but just put the seeds right into the ground.  Do I need to cold stratify them first or can I just plant them in October before it gets cold?  Since I am in South Central Kansas, would the seeds sprout before the last frost thus killing the seedlings?
If you could give me a step-by-step process from starting with the fruit ball until the seedling trees poke through the ground, I would really appreciate it.

Thank you,
Tim

Answer
Hi Tim,
Thanx for your question.  Sycamores here in Kansas do not require a cold stratification period.  Don't sow in the Autumn; sow in the Spring.  Here is a link that describes in detail how to grow sycamore from seed.  It is from the U.S. Forestry Service which I should like to think is the expert on this subject.  I hope it helps.
Tom

http://www.nsl.fs.fed.us/wpsm/Platanus.pdf