Astra ne mai yawa nau'i-nau'i da siffofi na furanni. Yana da sauƙi in faɗi abin da ba a samo launi ba: orange da kore. Har ma da kwanduna biyu masu launi, wanda ba haka ba ne a duniya na launi. Wannan yana haifar da sha'awar lambu kuma yana motsa tunanin masu zane-zane. Amma aster, kamar kowane irin shuka, yana buƙatar ƙwarewa ta musamman don noma.
