5 Best Electric Heated Propagators. A Guide To The Best Electric Propagator For Plants

A Guide To The Best Electric Propagators For Plants
A Guide To The Best Electric Heated Propagators For Plants

An electric plant propagator is essential for growing your plants from seeds, especially in colder climates where the growing season is shorter.

An electric propagator will provide warmth, moisture, and airflow in a controlled environment. This creates a safe, stable environment to ensure that your seeds grow into healthy plants with strong roots.

Here is a list of the 5 best electric propagators on the market, the pros, the cons, and the tips on how to use them correctly!

The Best Electric Heated Propagators For Plants

Britten & James Heated 7in1 Propagator Set
Stewart Large Heated Propagator
Stewart Thermostatic Control Electric Propagator
Sankey Growarm 100
EarlyGrow Shatter Resistant Medium Propagator

1. Britten & James Heated Windowsill Nursery 7 in 1 Propagator Set

Technical Specifications

  • Material: Rigid Plastic
  • Weight: 4.8 lb (2.18 kg)
  • Length: 30 inches (76 cm)
  • Width: 7.25 inches (18.5 cm)
  • Height: 6 inches (15 cm)
  • Thermostat Control: No
  • Ventilation: Yes

The Britten & James Heated Windowsill Nursery is ideal for anyone looking to start their own seedlings indoors. Whether you’re a beginner or a seasoned pro, this unit provides a warm and humid environment perfect for promoting fast seed germination and healthy seedling growth.

One of the key features of the Britten & James Heated Windowsill Nursery is its specially designed heating system. It keeps the soil at a consistent 8°C (~46°F) above the ambient compost temperature. This allows for optimal seedling development and growth.

Plus, with 7 mini vented propagators in the unit, you can easily grow up to 7 different plants simultaneously. And the separate air vents for each propagator allow you to fine-tune the humidity for each plant, ensuring optimal growing conditions.

In addition to its practical features, the Britten & James Heated Windowsill Nursery has a stylish look that will keep your windowsill looking great.

Overall, If you want to start growing your own fruit and vegetables indoors and simultaneously add some style to your windowsill, The Britten & James Heated propagation is a top choice.


  • Has 7 mini vented propagators.
  • Air vents for each mini propagator can be controlled individually.
  • The width is perfect for a windowsill.
  • Stylish look.


  • Not as high as other models.
  • The cable is only 52 inches (1.32 m) long.
  • No thermostat, only On or Off.

2. Stewart Large Heated Propagator

Technical Specifications

  • Material: Carbon Plastic With Thin Plastic Lid 
  • Weight: 6.4 lb (2.9 kg)
  • Height: 11 inches (28 cm)
  • Length: 20.5 inches (52 cm)
  • Width:  16.3 inches (41.5 cm)
  • Thermostat Control: No
  • Ventilation: Yes

The Stewart Large Heated Propagator is a fantastic choice for anyone looking to start their own garden or take care of their plants all year round. Whether you’re trying to propagate cuttings or keep your plants healthy during the colder months, this propagator has you covered.

One of the standout features of the Stewart Large Heated Propagator is its spacious compost tray, which can accommodate more plants than many other models on the market. And when it comes to maintaining the ideal temperature for your plants, this propagator really shines. It features a built-in heater that quickly warms up to a consistent 15-20°C (59-68°F), providing the perfect environment for your plants to thrive.

Overall, the Stewart Large Heated Propagator is a reliable and effective solution for all your plant propagation needs. Whether you’re an experienced gardener or just starting out, it’s an excellent tool to have in your arsenal.


  • Large compost trays can accommodate more plants than other models.
  • The built-in heater quickly warms up to a consistent 15-20°C (59-68°F), providing the ideal temperature for plant growth.


  • Too large for smaller windowsills or spaces.
  • The lid is thin and flimsy.
  • It is more expensive than other models.
  • No thermostat, only On or Off.

3. Stewart Thermostatic Control Electric Propagator

Technical Specifications

  • Material: Rigid Plastic
  • Weight: 2.7 lb (1.24 kg)
  • Height: 7.7 inches (19.5 cm)
  • Length: 15 inches (38 cm)
  • Width: 9.6 inches (24.5 cm)
  • Thermostat Control: Yes
  • Ventilation: Yes

The Stewart Thermostatic Control Electric Propagator is a fantastic tool for anyone looking to grow their fruits, vegetables, herbs, and flowers at home.

Its thermostatic control system maintains the average soil temperature 10-15°C (50-59°F) above ambient, ensuring optimal growth conditions for your plants. The adjustable ventilation panels allow you to control humidity and air temperature, providing your plants with everything they need to thrive.

In addition to its functionality, this propagator is also built with solid and durable materials, including a robust crystal styrene cover that provides optimal clarity and maximum light transmission. This helps ensure that your plants receive the optimal amount of light and warmth, leading to healthier and faster growth.

Overall, the Stewart Thermostatic Control Electric Propagator is a highly efficient and easy-to-use device that can help you jump-start the growing season. So, it can be a great addition to any home garden.


  • Thermostatic temperature control.
  • Robust crystal styrene cover.


  • Lacks visually appealing design elements.

4. Sankey Growarm 100

Technical Specifications

  • Material: Sturdy Plastic
  • Weight: TBC
  • Height: 7.5 inches (19 cm)
  • Length: 15 inches (38 cm)
  • Width: 9.4 inches (24 cm)
  • Thermostat Control: No
  • Ventilation: Yes

The Sankey Growarm 100 Electric Propagator is perfect for helping you to get ahead this growing season. With this propagation kit, you can start growing your first seeds in no time.

By gently heating the soil, the 8W heat element in the base of the tray is perfect for speeding up seed germination.

With its clear rigid lid and adjustable ventilation, you can easily control humidity and temperature.

It comes with two 8.3 inches (21 cm) seed trays and a capillary mat that helps retain moisture and keep the soil moist.

The lid is made from clear sturdy plastic. It has adjustable ventilation, making it easy to keep the temperature and humidity levels consistent.

Overall, The Sankey Growarm is an excellent and cost-effective way to start your own vegetable garden.


  • Made out of sturdy plastic.
  • Comes with two 8.3 inches (21 cm) seed trays.
  • Includes capillary matting that retains water & keeps the soil moist.


  • The cable is only 55.1 inches (1.4 meters) long.
  • No thermostat, only On or Off.

5. EarlyGrow Shatter Resistant Medium Propagator

Technical Specifications

  • Material: Shatter Proof Plastic
  • Weight: 3.4 lb (1.55 kg)
  • Height: 7.9 inches (20 cm)
  • Length: 15 inches (38 cm)
  • Width: 9.4 inches (24 cm)
  • Thermostat Control: No
  • Ventilation: Yes

The Early Grow Shatter Resistant Medium Propagator is an excellent option for indoor gardening enthusiasts of all skill levels.

One of the standout features of this propagator is its shatterproof lid, which provides added protection for your plants and prevents accidental breakage. Its sturdy, shatterproof plastic construction makes it durable and easy to clean, ensuring it will last for a long time.

While it doesn’t come with a thermostat, it can maintain a consistent temperature of approximately 16-21°C (61-70°F). It is a good environment for seedlings and cuttings to grow well.

Additionally, the adjustable ventilation system allows you to regulate the airflow and humidity within the propagator, providing the perfect growing conditions for your plants.

Despite its simplicity and affordability, the Early Grow Shatter Resistant Medium Propagator is a reliable and effective propagator for indoor gardening. Its plug-and-play design makes it easy to use, even for those new to gardening.

Overall, if you’re looking for a straightforward option to help you start indoor gardening, this propagator is an excellent choice.


  • Made out of shatterproof plastic.
  • The cable is 71 inches (1.8 m) long.


  • No thermostat, only On or Off.
  • Limited availability.
  • Comes without a manual (but it is plug-and-play, though).

Our Top Picks For Best Electric Propagator For Plants

Best Overall

Britten & James 7in1 Propagator Set

Best Largest Option

Stewart Large Propagator


Why Get An Electric Propagator For Plants?

An electric propagator is a valuable tool for starting plants from seeds. It provides optimal conditions for seed germination and allows for better temperature and humidity control, leading to a higher success rate.

Also, an electric propagator will speed up seed germination. This makes it a very convenient and easy-to-use choice for home growers. An electric propagator is an excellent investment for any plant enthusiast.

There are a few reasons why you should get an electric propagator for plants. These are:

1. Improved Success Rate

By providing plants with the optimal temperature, humidity, and light, electric propagators can help improve the success rate of your propagation efforts.

2. Humidity Control

Most electric propagators have built-in air vents that can be used to control humidity levels. These vents are located on the top or sides of the propagator and can be opened or closed to allow more or less airflow.

Pro Tip: Be aware that temperature and humidity are interrelated. When controlling one, you should also keep an eye on the other.

3. Speed

Using an electric propagator can help speed up seed germination and plant growth processes. A controlled environment can help plants grow more quickly than they might in a less controlled environment.

4. Convenience

Electric propagators are easy to use and can be placed conveniently in your home or greenhouse. They are also typically easy to clean and maintain.

5. Ease Of Use

Most electric propagators come with clear instructions and are easy to operate, making them suitable for gardeners of all experience levels.

6. Multiple Uses

Electric propagators can be used for various purposes, including starting seeds, rooting cuttings, and growing small plants. They are also suitable for many plants, including fruits, vegetables, herbs, and flowers.

7. Versatility

Many electric propagators come with adjustable temperature and humidity controls, making them suitable for use with a wide range of plants with different growing requirements.

What to Look for When Buying Electric Propagator For Plants

What to Look for When Buying Electric Propagator For Plants
What to Look for When Buying Electric Propagator For Plants

When choosing an electric propagator for plants, there are a few essential things to consider. These are:

  1. Material
  2. Size
  3. Temperature Control
  4. Ventilation
  5. Price
  6. Light

1. Material

The material the propagator is made of can affect its durability, transparency, and overall performance. Look for propagators made of sturdy materials such as plastic or glass. Consider the level of transparency of the lid and how much light it allows.

2. Size

Make sure the propagator is large enough to accommodate the size of the plants you want to propagate. There will be times when you will need to keep plants inside the propagator for longer than expected.

3. Temperature Control

An electric propagator with a thermostat and ventilation will maintain the appropriate temperature range for the plants being propagated. With these features, the electric propagator can maintain the perfect temperature range for the plants.

4. Ventilation

Proper ventilation is vital for preventing the buildup of heat and moisture, which can lead to fungal diseases. Look for a propagator with adjustable vents or openings to allow air circulation.

5. Price

While more expensive electric propagators may come with added features or be of higher quality, it’s important to note that these extra features may not always be necessary. Many times a simple, basic propagator will suffice for successful plant propagation.

6. Light

Some electric propagators are equipped with built-in grow lights. However, if the propagator does not have grow lights, it’s important to ensure that it has a transparent cover to allow natural light to reach the plants.

Light is crucial for plants’ growth and development; without it, they may become stunted or fail to thrive. While grow lights may be a convenient feature, natural light will most of the time be enough.

How To Use Electric Propagator For Plants

Here are 8 steps for sowing seeds in a propagator:

  1. Choose the soil. Fill the propagator with compost or backyard soil. Water the soil lightly to moisten it.
  1. Choose your seeds. Select the seeds you want to sow and read the packet for specific sowing instructions. Different seeds need to be planted at different times.
  1. Sow the seeds. Place seeds on the soil surface and cover them with a thin layer of compost or soil. Follow the packet instructions for the recommended sowing depth, as some seeds may need to be sown deeper than others.

Pro Tip: If you have collected your own seeds or have lost the seed packet, you can follow a simple rule for planting depth. The seed should be planted at a depth that is three times the length of the seed. For example, if the seed is 5 mm long, it should be planted at a depth of 15 mm in the soil.

  1. Water the seeds. Water the seeds heavily, but be careful not to wash seeds away.
  1. Place the propagator in a sunny location. Place the propagator on the sunniest windowsill or under grow lights.
  1. Keep the soil in the propagator moist. Keep the soil moist by watering it regularly. Be careful not to overwater, as this can cause seeds to rot.
  1. Monitor germination. Keep an eye on the seeds and wait for seeds to begin sprouting.
  1. Transplant the seedlings. Once the seedlings are large enough, transplant them into pots or gardens.

Electric vs. Non-Electric Propagators

Electric vs. Non-Electric Propagators
Electric vs. Non-Electric Propagators

When deciding between electric and non-electric propagators, there are a few key factors to consider. Both types have benefits and drawbacks that may impact their performance.

Electric propagators are efficient. They make maintaining proper conditions for seed germination easier. However, these models are often more expensive than non-electric propagators. Electric propagators are limited by their power source.

Non-electric propagators will require more manual effort to maintain the perfect temperature and humidity levels for the seed to germinate. On the other hand, non-electric propagators are often less expensive. They can be used anywhere, as they do not require a power source.

Electric Propagators Frequently Asked Questions (FAQ)

Electric Propagators Frequently Asked Questions (FAQ)
Electric Propagators Frequently Asked Questions (FAQ)

Is It Worth Buying An Electric Propagator?

An electric propagator provides the optimal conditions for seed germination. This includes consistent temperature and humidity levels, which can significantly increase the chances of successful germination.

Also, the controlled environment of a propagator can speed up the germination process. It will allow you to see results much faster.

Whether you are a professional grower or a home gardener, a propagator can be a super valuable tool for starting your own plants from seeds.

Where Should A Heated Propagator Be Placed?

When choosing a location for a heated propagator, it is essential to consider factors such as light, temperature, and space.


Seeds need light to germinate. So, the propagator should be placed in the sunniest location where it will receive plenty of natural light. In addition, you can use grow light if it’s not enough.


Most propagators do not have temperature control, and the heating is either On or Off. However, depending on the model, this still allows the propagator to maintain a temperature of 5-15°C higher than the ambient temperature.

For seeds to germinate successfully, it is essential to avoid placing the propagator in a location where it will be exposed to large temperature fluctuations.


Make sure you have enough space to accommodate the size of your propagator. Also, allow easy access to it for watering and other maintenance tasks.

Benefits Of Using A Propagator

Propagators offer numerous benefits for your plants. They provide a warm and humid environment that encourages quick germination, reducing the time it takes for new seedlings to emerge.

At the seedling stage, propagators provide protection from pests and extreme weather conditions that may otherwise impede growth.

What Are The Types Of Propagators

Various propagators are available on the market, from basic to more high-tech options.

Basic propagators are made from a dark plastic base with lids that help maintain warmth and humidity.

High-tech systems often come with fans for increased air circulation, sensors for monitoring temperature and humidity, and adjustable vents or windows to control air movement.

Some propagators have water reservoirs that can be filled to increase humidity levels if needed.

Tips For Getting The Most From Your Plant Propagator

When it comes to getting the most out of your propagator, there are a few essential tips that you should keep in mind.

1. Check the humidity and temperature levels within the propagator and adjust them if necessary. This can be done by using vents to control airflow and water reservoirs to increase humidity.

2. Give your plants enough space to spread without competing for nutrients, and ensure that each plant gets sufficient light for photosynthesis.

3. Rotate your plants regularly for even growth. This will ensure that none of them get too much light or not enough!

What Seeds Require Heat To Germinate?

Seeds from warm-season plants, such as tomatoes, peppers, and eggplants, require higher temperatures to germinate.

Providing the right temperature conditions can be crucial for successful seed germination. Seeds exposed to temperatures that are too low or too high may fail to germinate or take longer to sprout.

On the other hand, seeds from cool-season plants, such as lettuce, peas, and radishes, do not require heat to germinate.


Electric propagators can be a convenient and efficient tool for seed germination, especially for gardens in colder climates.

When choosing the best electric propagator, it is crucial to consider factors such as the material it is made of, the size of the propagator, temperature control, ventilation, light, and obviously the price.

You can ensure fast and successful seed germination by considering these factors and selecting a high-quality electric propagator.

Hopefully, you found the best electric heated propagator for your plants. If you enjoyed reading our article, check out other similar articles in our “Garden Tools” section.

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