We offer any level of purchase tracking that you desire.
Vendor information includes purchase history and a place to store
imported price lists that may be distributed as Excel-based catalogs
or availability lists.  (See Excel availability import below for
additional information.)
The purchasing record can track how material is received and then, if it is
immediately re-potted or lined out, the PO system tracks the new size, grade,
saleability, location status as well as remembering where the product was
purchased (what grower or vendor) and the size grade purchased.
The look and feel of the PO and vendor systems is similar to the sales and
customer screens that you are already familiar with.
The master order purchasing system allows you to reserve a block of plant material for pick up as needed. 
The reserved material can be included in the inventory forecast if desired.  In this way, you can assemble a
consolidated inventory of reserved material from many growers that your sales staff can work from.  The
master PO is updated as material is received.