Q: How warm does it get?
The mats maintain soil temperatures 5° to 11°C (9° to 20°F) above ambient.
The medium mat can hold up to two standard 10" × 20" seed trays.
Size:
Choose an option to view item availability.
Designed to gently warm soil, these mats maintain temperatures 5° to 11°C (9° to 20°F) above ambient to hasten seed germination and encourage healthy root development in seedlings and cuttings. By warming the soil from below, the mats create consistent conditions seeds need to germinate evenly, even in cool rooms.
They’re effective with any non-insulated containers (avoid Styrofoam or expanded polystyrene, which are poor heat conductors). To maintain performance, store them rolled, not folded.
Available in three sizes. The 10" × 20 3/4" small mat can accommodate a single standard 10" × 20" seed tray. The medium mat measures 20" × 20 3/4" and can hold up two trays; at 48" × 20 3/4", the large can hold up to four seed trays.
The mats are cULus certified.
The mats maintain soil temperatures 5° to 11°C (9° to 20°F) above ambient.
Choose the size that suits your trays. The 10" × 20 3/4" small mat accommodates a single standard 10" × 20" seed tray, the 20" × 20 3/4" medium mat holds two trays and the 48" × 20 3/4" large mat holds up to four.
They are effective with any non-insulated containers. Avoid Styrofoam or expanded polystyrene, which are poor heat conductors.
Warming from below creates the consistent conditions seeds need to germinate evenly, even in a cool room.
Store the mats rolled rather than folded, which maintains their performance.
Yes, the mats are cULus certified.
| Dimensions | 10" × 20 3/4", 20" × 20 3/4" or 48" × 20 3/4" |
| Includes | Heat mat |
| Capacity | 1, 2 or 4 standard 10" × 20" seed trays |
| Package Quantity | 1 item |
| Certifications | cULus certified |
| Warranty | Lee Valley Satisfaction Guarantee |
Options:
Size
Variations:
Seedling Heat Mats
Designed to gently warm soil, these mats maintain temperatures 5° to 11°C (9° to 20°F) above ambient to hasten seed germination and encourage healthy root development in seedlings and cuttings. By warming the soil from below, the mats create consistent conditions seeds need to germinate evenly, even in cool rooms.
They’re effective with any non-insulated containers (avoid Styrofoam or expanded polystyrene, which are poor heat conductors). To maintain performance, store them rolled, not folded.
Available in three sizes. The 10" × 20 3/4" small mat can accommodate a single standard 10" × 20" seed tray. The medium mat measures 20" × 20 3/4" and can hold up two trays; at 48" × 20 3/4", the large can hold up to four seed trays.
The mats are cULus certified.
