Sonnenberg will open its greenhouses to the public in celebration of its wonderful orchid collection. Flower fans of all ages will delight in exotic blooms showcased in Sonnenberg’s working, 100 year-old Lord & Burnham greenhouse complex. But the breathtaking beauty does not stop there. Sonnenberg’s more than 50 acres is sprinkled with eclectic collection of spring blooming trees, shrubs, bulbs, and perennial plants.