Seedling Heat Mats

SKUS: ZHG622, ZHG126, ZHG127, ZHG128

These thick plastic Seedling Heat Mats have an embedded heating wire inside. Because the thermostat is outside the mat, the heat given off by... Read More

Select sizes on sale until supplies run out.
Seedling Heat Mats has a rating of 4.8 stars based on 13 reviews.
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Shipping & Returns

West Coast Seeds ships anywhere in North America. However, we are not able to ship garlic, potatoes, asparagus crowns, bulbs, onion sets, Mason bee cocoons, or nematodes outside of Canada. We regret, we cannot accept returns or damages for orders outside of Canada. The minimum shipping charge to the US is $9.99.

Seeds of Growth

For every order online, we donate a pack of seeds to gardens and communities worldwide through our Seeds of Growth program, supporting sustainable growth and local food systems.

Imagine the possibilities Shop All

Seedling Germination Trays

$3.29

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Microgreens Tray

$3.39

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Plug Inserts 72 Cells

$2.29

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Plug Inserts 24 Cell

$2.29

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Plug Inserts 18 Cell

$2.29

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Plug Inserts Professional 72 Cells

$3.99

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Seedling Dome 4″

$6.99

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Seedling Domes 7" Vented

$7.99

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Seedling Warmers

Product Details

These thick plastic Seedling Heat Mats have an embedded heating wire inside. Because the thermostat is outside the mat, the heat given off by the mat is related to the temperature of the surrounding air. So, when the room is cool, the mat is 5-11°C (10-20°F) warmer than that. And when the room or cold frame is warm, the mat is much warmer. In late spring when the surrounding temperature (not soil temperature) is over 24°C (75°F), it is best to unplug the mat so that the seedlings do not become too hot. Direct sunlight will overheat the air surrounding your flats and cause overheating as well.

ZHG126 - 10 x 20" (fits one tray). Shipping Dimensions: 53 cm x 24 cm x 3 cm
ZHG127 - 20 x 20" (fits two trays). Shipping Dimensions: 52 cm x 9 cm x 9 cm
ZHG128 - 20 x 48" (fits four trays). Shipping Dimensions: 53 cm x 9 cm x 9 cm
ZHG622 - 4 x 24" (windowsill heat mat). Shipping Dimensions: 16 cm x 10 cm x 5 cm

Quick Facts:

    ZHG126 – 10 x 20″ (fits one tray)
    ZHG127 – 20 x 20″ (fits two trays)
    ZHG128 – 20 x 48″ (fits four trays)
    ZHG622 – 3 x 20″ (windowsill heat mat)

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