black-seeds cactus cactus-fruit climbing-cactus colorful colors colourful colours contrast cultivated decorative dragon-fruit edible exotic food fruit green hylocereus-undatus juicy moist ornamental-plant pips pitahaya pitaya produce red red-flesh red-skin seeds seedy shape shapes size smell strawberry-pear succulent-plant surface surfaces tasty texture textured textures unusual white-flesh abundance abundant berries bracts clusters drupes endocarps flowers foliage fronds fruitful inflorescences leaf stalks leaves light mesocarp palm palm tree perspectives petioles plentiful pods productive seed-bearing fruits sprays tree variations variety various appearance cone cycad cycads durable firm fronds hardy inedible large painted appearance pineapple-shaped poisonous primitive resistant seed pod strange temperate