Buy any 3 orchids this size and we will add a 4th our choice at no charge. They can be combined with 2-3" dendrobium, Oncidium and Phalaenopsis to qualify for the free orchid. Add this offer to your order. Select this item it will not add to your invoice, but we will see you are entitled to an additional plant of our choice. We will send something different from what you ordered and comparable type of plant.