As far as I know floral tape is not mentioned on the exempt material list. Since it's basically considered a general use item you may have problems getting a GCC or test results from the manufacturer of the tape to prove compliance. Perhaps you can develop a fabric cover for the stem, that way all of your basic raw materials are lead testing exempt.
For the current full list of raw materials offically exempt from lead testing please read
http://www.cpsc.gov/businfo/frnotices/fr09/leaddeterminationsfinalrule-draft.pdfHere's some reading to get you started on understanding the CPSIA.
The main CPSC website
http://www.cpsc.gov/The CPSIA main website
http://www.cpsc.gov/about/cpsia/cpsia.htmlCPSIA guidance for small businesses/crafters includes a quick look guide Table : B exempt raw material list
http://www.cpsc.gov/about/cpsia/smbus/cpsiasbguide.pdfAn update on the stay of 3rd party testing
http://www.cpsc.gov/cpscpub/prerel/prhtml10/10083.htmlWebcasts for the 2 day public workshops in Dec 2009
http://www.cpsc.gov/about/cpsia/cpsiatesting.htmlTracking labels
http://www.cpsc.gov/about/cpsia/sect103policy.pdfCPSIA's FAQ page
http://www.cpsc.gov/about/cpsia/sect103.html#103q8 The CPSC's age determination guideline
http://www.cpsc.gov/BUSINFO/adg.pdfA timeline from the CPSIA
http://www.cpsc.gov/about/cpsia/rulemaking.pdfInformation on how this law is retro-active
http://www.cpsc.gov/library/foia/advisory/317.pdfStandard Operating Procedure for Determining Total Lead (Pb) in
Children’s Metal Products (Including Children’s Metal Jewelry) found at
http://www.cpsc.gov/about/cpsia/CPSC-CH-E1001-08.pdfEven non-metal components must be tested using destructive digestive testing read more here
http://www.cpsc.gov/about/cpsia/CPSC-CH-E1002-08.pdf Here's info about small parts warnings and how they should appear in your listings / ads
http://www.cpsc.gov/LIBRARY/FOIA/FOIA08/brief/toygameads.pdfpage 19 of the PDF has the abbreviations & page 20 of the PDF has the warning examples are in black-n-white but I believe they need to be in certain colors on the actual label for the physical product.
Small Parts Regulations Summary
http://www.cpsc.gov/BUSINFO/regsumsmallparts.pdf Small Parts labeling
http://www.cpsc.gov/BUSINFO/label.pdf Maybe some one else has a link to a plain english version of the small parts regulations, but these 2 links are the best I have.
For fabric and fiber items
FTC Labeling requirements
http://www.ftc.gov/bcp/edu/pubs/business/textile/bus21.shtm#covered Examples of FTC labels (about 3/4 of the way down the page)
http://www.ftc.gov/bcp/edu/pubs/business/textile/bus21.shtm