What is the largest seed that can be planted?

The largest seed that can be planted varies depending on the type of seed. Some of the largest seeds that can be planted are from the Coco de Mer palm tree, which produces seeds that can weigh up to 40 pounds (18 kilograms) and can be over a foot (30 centimeters) long. Another example is the double coconut or Lodoicea maldivica, which produces seeds that can weigh up to 60 pounds (27 kilograms). However, most seeds used for agriculture are much smaller, such as corn or bean seeds.