|Do you have to have a female and a male holly bush to produce the berries? If so, how do you tell the difference?
|It's true - there are both male and female hollies and you need one of each in order to have the female produce berries. You can't tell by looking at the plants whether they are male or female, but you can make the determination by dissecting the flowers. Both male hollies and female hollies bear flowers that have 4 petals, but if you take a close look at the flowers, specifically at what protrudes from their centers, and you'll find that the male holly flowers have 4 yellow stamens; each female holly flower has a green ovary (a green bump) in the center.