Copy right advice in a small home growing business?

The two names are different enough. They may not be happy but you are not infringing on their trademark (not copyright) If you could register your company under the name it is acceptable for use and they have no claim. go to the US Patent and Trademark Office at a href="http://www.uspto.gov" rel="nofollow"http://www.uspto.gov/a and see if your company name is trademarkable.