Besides buckwheat (white and yellow are fine, too), I would also like to trade for:

aster, especially alpine, and other types
gaillardia
erigeron (Santa Barbara Daisy/fleabane)
sea thrift (armeria)
mimulus
astrantia
bee balm
poached egg plant (limnanthes)
ageratum
joe pye weed
ice plant (lampranthus)
goldenrod
helenium
heliopsis
stock
annual phlox
vincas

Please check my tradelist for any seeds you're interested in and send me a tree-mail.

Thanks so much!