If there is no newspaper published in the county, three copies of the notice shall be posted at least 28 days before the return day thereof in three different and conspicuous places in such county, one of which shall be at the front door of the courthouse in said county. Proof of posting shall be by affidavit of the person posting the notices, which affidavit shall include a copy of the notice posted and the date and places of its posting.
Fla. Stat. § 49.11
Former s. 48.11.