Sow your cantaloupe seeds directly into a mound of soil in the garden. Make sure the seeds get watered regularly and wait for the seedling to break the surface.
Cut a 1/4-inch dowel rod into several 8-inch-tall rods.
Put two dowel rods into the ground and stretch a piece of aluminum foil between them, wrapping it around both ends to secure it. The aluminum foil must be placed so it will act to redirect sunlight toward the seedling.
Place two or three more sets of aluminum foil "mirrors" to direct the light toward the seedlings.
Adjust the height and placement of the foil-covered rods as the plant grows. The sunlight should be redirected so it lands on the major leaves of the plant and not the stem or runners.