A. A Trailer is a plant that is genetically predisposed to have multiple crowns that branch out in all directions. On these plants the crowns have necks that elongate and grow open enough for light to reach all parts of the plant so it well bloom well. The crowns are not bunched up as in a plant that as been allowed to "sucker" Hybrid trailers usually have a name suggesting what they are. Such as "Santa Fe Trail" or "Ramblin' Angel".