This is an easy way to cover your pond or garden.
BUILD AN EASY GREENHOUSE in less than 1 hour
The basic plan includes:
2 - ½ inch 10’ long PVC pipes
4 - 1/4 inch or smaller thick, 12 inch long stakes
4 mil thick or 6 mil thick plastic sheeting
The greenhouse featured was a set of 4 frames attached to each other.
Pound at least 4 stakes about 6 inches deep into the ground for each corner of your greenhouse. You can use rebar or even tree limbs sharpened to a point (tent stakes will not work because of its shape).