What types of sentence is this? daylilies - hardy perennial plants of the lily family - are popular for home gardens due to their low maintenance nature and their tolerance of both drought and frost

Believe it or not, this sentence is simple.

Yes, it is quite long, but it has one subject (daylilies) and one verb (are). As a result there is one independent clause.

This single independent clause has some adverb and adjective phrases, but the sentence is still a simple one.