Now that we know how to build a grow rack, let’s see how to make inexpensive heat mats…from Christmas lights!
This is a “readers’ favorite” post our how-to site.
When you are learning to grow from seeds, often you might see reference to a heat mat for seedlings.
Heat mats can really help speed up germination for many seeds, especially tomatoes and peppers.
You can buy them, but here I will show you how to MAKE one.