Orchid Tree Fragrant Purple Pink Shrub Seeds Garden Tree Heirloom 25 Seeds Quantity: 25 Bulk Seeds Pink orchid trees originated in the Far East, especially China and India. They can grow up to 25 feet tall, and are a hardy, drought-resistant tree. They prefer hot weather, but can easily survive in temperatures as low as 25 degrees F. Pink orchid trees got their name from the bright-pink, orchid-like flowers they produce. It is easy to grow a pink orchid tree, with only a little time and dedication.