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The Best Seedling Heating Mat - 2021

Last updated on October 7, 2021
Best Seedling Heating Mat

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Our Picks For The Top Seedling Heating Mats

Show Contents
Our Take
  Top Pick

BN-LINK Water-Resistant Seedling Warming Mat

Don't Waste Your Money Seal of Approval

Water-Resistant Seedling Warming Mat

Overall Take

Cozy Plant BabiesYou will be a step ahead with your seed starting and cutting propagation when you choose this durable, 10-by-20.75-inch heating mat.

  Runner Up

VIVOSUN Waterproof Seedling Heated Mat

VIVOSUN

Waterproof Seedling Heated Mat

Overall Take

Keep Those Plants ToastyYou can rest assured that your seeds and roots will never get burned or damaged when you keep them atop this mat.

  We Also Like

Seedfactor Seedling Germination Heated Pad

Seedfactor

Seedling Germination Heated Pad

Overall Take

Safe and EffectiveThese mats are strong enough for greenhouses and are ideal for use in your home.

  Also Great

Ohuhu Water-Resistant Seedling Warming Mat

Ohuhu

Water-Resistant Seedling Warming Mat

Overall Take

Stable, Ambient Air TempsThis mat is easy to use and will help your seeds germinate with little effort on your part.

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Guide written by Danielle Smyth
Last updated on October 7, 2021

Seed and seedling flats are often placed in windowsills, but they can get to be too hot or too cold. Both seeds and seedlings require consistently warm temperatures to thrive.

Seedling heat mats slowly increase the temperature of seed-starting mediums. This kind of gentle warmth mimics warm springtime outdoor soil temperatures. Although experts disagree about the exact sweet spot temperature, it generally ranges from 65 to 85 degrees Fahrenheit. That’s about 10 to 20 above the average temperature in most homes.

In essence, seedling mats are electric heating pads made from PVC or plastic that are placed under seedling trays.  They are regulated by thermostats. These mats are made from waterproof materials and contain heating coils inside.

All you need to do is place your trays on top of the mat and plug it in. However, you should check on the temperature from time to time. Heat mats are not required for seeds and seedlings to grow, but the added heat can speed up germination!

Look for seedling heating mats that measure around 10 by 20 inches. If you have more trays, you can easily find larger mats. If you are starting from seeds, make sure to read the back of your seed packets to see what their optimum growing temperatures are.

You can remove the trays right after they sprout, keeping in mind that even if only some sprout, the others will follow suit soon after. The tray can be removed as soon as the first few seedlings start poking out, as the others have also had the benefits of the additional warmth.

The Best Seedling Heating Mats

1
  Top Pick

This warmth pad keeps up to 1,020 seeds and seedling trays at just the right temperature. This heating pad is durable and made from water-resistant material that stays flexible with use.

Features


Specifications

Brand
BN-LINK
Model
2
  Runner Up

VIVOSUN Waterproof Seedling Heated Mat

This innovative, professional heating mat keeps the optimum temperature for seedlings so they grow as well as possible. This mat uses radiant, far-infrared light waves and is made from water-resistant material.

Features


Specifications

Brand
VIVOSUN
Model
3
  We Also Like

Seedfactor Seedling Germination Heated Pad

This set of two seedling heating mats can be used to safely encourage growth of your seeds and seedlings. It offers thick, multi-layer construction, a strong heating wire and uniform heating.

Features


Specifications

Brand
Seedfactor
Model
4
  Strong Contender

VIVOSUN Waterproof Hydroponic Seedling Heating Pad, 2-Pack

This professional-grade pack of two heating mats have strengthened heating films, boast water resistance and run on 18 watts. Each heating mat measures 10 by 20.75 inches, so they can easily accommodate your plants.

Features


Specifications

Brand
VIVOSUN
Model
5
  Also Great

Ohuhu Water-Resistant Seedling Warming Mat

This heating mat has a unique layered structure, made with PVC and a Nikrothal heating wire. This combination keeps the rooting area temperature optimal and stable for the growth of your fledgling plants.

Features


Specifications

Brand
Ohuhu
Model

Our Seedling Heating Mat Buying Guide

Seed and seedling flats are often placed in windowsills, but they can get to be too hot or too cold. Both seeds and seedlings require consistently warm temperatures to thrive.

Seedling heat mats slowly increase the temperature of seed-starting mediums. This kind of gentle warmth mimics warm springtime outdoor soil temperatures. Although experts disagree about the exact sweet spot temperature, it generally ranges from 65 to 85 degrees Fahrenheit. That’s about 10 to 20 above the average temperature in most homes.

In essence, seedling mats are electric heating pads made from PVC or plastic that are placed under seedling trays.  They are regulated by thermostats. These mats are made from waterproof materials and contain heating coils inside.

All you need to do is place your trays on top of the mat and plug it in. However, you should check on the temperature from time to time. Heat mats are not required for seeds and seedlings to grow, but the added heat can speed up germination!

Look for seedling heating mats that measure around 10 by 20 inches. If you have more trays, you can easily find larger mats. If you are starting from seeds, make sure to read the back of your seed packets to see what their optimum growing temperatures are.

You can remove the trays right after they sprout, keeping in mind that even if only some sprout, the others will follow suit soon after. The tray can be removed as soon as the first few seedlings start poking out, as the others have also had the benefits of the additional warmth.

DWYM Fun Fact

Remember Jack and the Beanstalk? This beloved fairytale tells the story of poor young Jack, who used his mother’s milk money to buy magic beans. After being tossed outside, the beans sprout into an enormous stalk.

Jack later climbs the stalk repeatedly after finding a castle filled with gold coins, a goose that lays golden eggs and a magical harp. After the sleeping giant at the castle awakens and follows Jack down, Jack chops down the stalk with an axe, ending the giant’s life.

The moral of the story is to take advantage of all life’s opportunities. This applies to the benefits that a seedling heating mat can provide!

The Seedling Heating Mat Tips and Advice

  • Do not use a standard heating pad for seed and seedling germination. These do not provide consistent heat.
  • If you want a more inclusive germination system, look for heat mats that include grow kits with humidity domes. These keep your little green babies well hydrated!
  • If you have a pet, you can put a seedling heating mat under a towel or blanket to warm up their bed. Just be sure to remove the mat once the item is heated up, as well as before they lay down.

About The Author

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Danielle Smyth 

Danielle Smyth is a writer and content marketing expert based in New York. She has been writing on business and finance, home and garden, DIY, travel and tourism, and a variety of other topics for over a decade, and she holds a Master of Science in Publishing from Pace University. Danielle loves working on product reviews and helping others find the highest quality items and the best values. An avid gardener and home improvement fanatic, she is always looking for new products to make life easier.