---
product_id: 5061691
title: "NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5\" x 48\""
brand: "dirt genius"
price: "¥5112"
currency: JPY
in_stock: false
reviews_count: 8
url: https://www.desertcart.jp/products/5061691-new-dirt-genius-dght40-warm-seedling-heat-warming-mat-hydroponics
store_origin: JP
region: Japan
---

# Constant temperature control 20.5" x 48" size Warms up to 20° above ambient NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48"

**Brand:** dirt genius
**Price:** ¥5112
**Availability:** ❌ Out of Stock

## Summary

> 🌿 Ignite Your Green Thumb with the Ultimate Heat Mat!

## Quick Answers

- **What is this?** NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48" by dirt genius
- **How much does it cost?** ¥5112 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/5061691-new-dirt-genius-dght40-warm-seedling-heat-warming-mat-hydroponics)

## Best For

- dirt genius enthusiasts

## Why This Product

- Trusted dirt genius brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Spacious Design:** Perfectly fits large trays for all your planting needs.
- • **Grow Like a Pro!:** Maximize your seedling potential with optimal warmth.
- • **Hydroponics Friendly:** Ideal for hydroponic setups, ensuring thriving plants.
- • **Root Growth Accelerator:** Boost your plants' health and vitality effortlessly.
- • **Temperature Control Mastery:** Enjoy consistent heat for faster germination.

## Overview

The NEW Dirt Genius DGHT40 Warm Seedling Heat Mat is a spacious 20.5" x 48" electric mat designed to elevate your gardening game. It warms up to 20° above ambient temperature, ensuring optimal conditions for seedling growth and faster germination times. With constant temperature maintenance, this mat is perfect for both traditional and hydroponic gardening enthusiasts.

## Description

Nurture your inside garden with this Dirt Genius **Seedling Heat Mat**. This 48" x 20.5" radiant electric seedling heat mat warms up to a consistent 10 20 degrees above ambient temperature, making it a great tool to efficiently improve root growth and germination time. This Dirt Genius **Seedling Heat Mat** offers innovative water resistant construction, an intelligently designed internal heating wire layout, and its plug and play simple power up makes this seedling heat mat easy to use.<ul><li>6' Electric Power Cord</li><li>Intelligently Designed Internal Heating Wire Layout</li><li>1 year Manufacturer Warranty</li></ul> @[video](qkf7DUrLE_w)

## Features

- NEW Dirt Genius DGHT40 Seedling Heat Mat
- Advanced 20.5" x 48" Radiant Electric Mat
- Warms up to 10° 20° Above Ambient Temperature
- Constantly Maintains Temperature
- Efficiently Improves Root Growth & Germination Time

## Images

![NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48" - Image 1](https://m.media-amazon.com/images/I/61-XcIb3P5L.jpg)
![NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48" - Image 2](https://m.media-amazon.com/images/I/51bXCHGi0FL.jpg)
![NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48" - Image 3](https://m.media-amazon.com/images/I/61I0L4vbJXL.jpg)
![NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48" - Image 4](https://m.media-amazon.com/images/I/51UyMZGmvSL.jpg)
![NEW Dirt Genius DGHT40 Warm Seedling Heat Warming Mat Hydroponics 20.5" x 48" - Image 5](https://m.media-amazon.com/images/I/71S2aZ40XrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ 







  
  
    Beast of a heating mat
  

*by P***R on Reviewed in the United States on January 17, 2019*

This is one of the only heating mats that did the job every time. The large area means you can spread it throughout your tent in a few ways. If you suffer from cold winters throw this up over a circulating fan and it'll boost up the heat. If you roll this up and plug it in it gets at least 150F I haven't measured with a heat gun but the bitch can get hot enough to burn hands or melt through itself.The only flaw is that it uses a flimsy plastic that gets soft/flexible when warm, but is brittle at all other times.

### ⭐⭐⭐⭐ 







  
  
    Works well
  

*by S***N on Reviewed in the United States on February 6, 2014*

I have a number of Hydrofarm mats - this is my first from Dirt Genius.  The construction is pretty much the same as the Hydrofarm mats and so far it is working well. If it passes the test of time I would buy more Dirt Genius mats as they are a good deal less expensive.

### ⭐⭐⭐⭐⭐ 







  
  
    Great for starting a lot of seeds
  

*by R***E on Reviewed in the United States on April 8, 2014*

Four full size (11x22) seed starter trays can fit on this one mat.  If you start a lot of seeds (like us) you'll do better with this one large mat instead of four single ones. We have it plugged into a thermostat controller that has four outlets. Four mats to cover this area would consume all the outlets, this mat uses one, freeing up three to use for other warming mats. Also, you'll save about 20%

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-20*