You do not need a heat mat for most indoor seed starting but there are circumstances where they come in handy. Learn best practices and what to look for when purchasing.
Do I Need a Heat Mat to Start Seeds?
Using a Heat Mat To Start Seedlings Indoors
MET Certified Heat Mat, Temperature Adjustable Waterproof Durable Heat - USMANTIS
7 Tips on How & When to Use a Heat Mat on Garden Seed Starts: A Seed Starting Series
Do I Need a Heat Mat to Start Seeds?
Viagrow 20.5 in. x 8.5 in. Seed Propagating Seedling Heat Mat VSEEDMAT - The Home Depot
iPower 48 in. x 20 in. Waterproof Seeding Heat Mat Warm Hydroponic Pad Plant Starting Kit Black GLHTMTL - The Home Depot
How to Use Heat Mats for Starting Seeds - Bootstrap Farmer
How to Use a Heating Mat When Starting Seeds
The Beginner's Kit to Mastering Seed Starting - How to Use a Heat Mat
PREMIUM MATERIAL - Made of multiple layers of flexible PVC that encase heat-conducting film, the outer layer is sealed to protect the internal heating
21W Seedling Heat Mat for Seed Starting, 10 x 20.75 Waterproof Heating Pad for Indoor Plants Germination Hydroponic, MET Standard - 2 Pack
How To Use A Seedling Heat Mat The Right Way - Epic Gardening
PREMIUM MATERIAL - Made of multiple layers of flexible PVC that encase heat-conducting film, the outer layer is sealed to protect the internal heating
21W Seedling Heat Mat for Seed Starting, 10 x 20.75 Waterproof Heating Pad for Indoor Plants Germination Hydroponic, MET Standard - 2 Pack
Ferry Morse Seed Starting Heat Mat, 10 x 20 - JHHEATMAT-8
How to Use Heat Mats for Starting Seeds - Bootstrap Farmer