Apex domains cannot have CNAME records.
Question and response
Question
dig florifarms.com. NS
Answer
florifarms.com. 5 NS ns1098.ui-dns.de.
florifarms.com. 5 NS ns1119.ui-dns.biz.
florifarms.com. 5 NS ns1037.ui-dns.org.
florifarms.com. 5 NS ns1042.ui-dns.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0