Huayruro Seeds The huayruro seeds are grow in the Amazon Rainforest. They are naturally red and black. Seeds that are red with a black spot are called huayruro macho and are considered "male". The red variety, huayruro hombre, are considered "female". They are used as good luck charms, and are considered to ward off negativity while attracting good fortune for those who wear them. Like holly berries, they are not edible and should be kept out of the reach of small children.