The largest orchid is generally agreed to be
Grammatophyllum speciosum. It can weigh up to 2,000 pounds or 900 kilograms and is reputed to produce up to 10,000 flowers on a mature plant in nature. The pseudobulbs reach 10 feet or 3 meters in height with leaves along the full length. The species is found in Malaysia, the Solomon Islands, Sumatra, the Philippines, Papua and New Guinea.