How to Breed Grubs

Grub is the term that refers to a beetle when it is in its larval stage of development. They are often bred to be fed to house pets, such as birds, reptiles or small critters. The most common breed of grub that is cultivated and fed to house pets is known as the mealworm, which is the larval stage of the mealworm beetle. They are preferred over other grubs because they are simple to take care of and require little effort to breed them successfully.

Things You'll Need

  • Sealable plastic container
  • Oats
  • Bran
  • Small, shallow dish
  • Potato
  • Carrot
  • Orange
Show More

Instructions

    • 1

      Cut a large number of air holes in the lid of the plastic container. These will need to be large enough to provide air for the grubs to breathe, and small enough so that they cannot easily escape.

    • 2

      Fill the bottom of the plastic container with a mixture of bran and oats. The mixture should be from 1 to 2 inches deep. This will provide food and nutrients to the mealworms, assuring that they will mature and breed.

    • 3

      Place a small, shallow dish in one corner of the plastic container. Fill the small dish with half of a potato, a 2-inch slice of carrot, and from a quarter to half an orange.

    • 4

      Place the grubs you are planning to breed in the plastic container and seal the lid. Store it at room temperature.

    • 5

      Replace the old carrot, potato and orange about every couple of days. If you neglect to do this, the grubs could die from starvation and exposure to molds.

    • 6

      Wait for about two weeks for the grubs to grow into pupa and then eventually beetles. Once beetles have fully matured from the grubs, they will begin to lay eggs in the oat and bran of the container. These eggs will eventually hatch to create more grubs.