Garland Super7 Electric Heated Windowsill Propagator G51

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There’s only one open heating space, so you’re not restricted by smaller ‘cells’. The only real downside to this is that seeds can’t be individually ventilated. The plastic lid has two vents, which can be opened or closed to help regulate the temperature inside the propagator. First, you will need to know how much your energy provider charges per kilowatt-hour. Let’s say they charge 14p per kWh (a relatively standard rate in the UK).

With this unit, the base gets warm evenly. This is one of the reasons why it is incredibly efficient. You can use it to germinate a range of seeds including chillies and tomatoes. Whether you are a novice or a pro gardener, you are likely to appreciate working with this unit. Some smaller units have individual ‘cells’ for each pot so you don’t have as much free range with how many different seeds you can plant at a time. The Unit measures 76 cm x18.5 cm x14cm. Its size allows it to sit on a standard windowsill comfortably. Given its size, the performance of the Suttons Super 7 electric propagator is commendable. You can use each one of its compartments for a different seed variety. 4 Stewart P035B Essentials Electric Propagator For example, in the above list, there are some seven-cell propagators, which would make it possible to plant around 21 seeds (if you planted three seeds in each cell). However, the good thing with individual-cell propagators like this is that you can have better control over the temperature in each cell.

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This tray heats very evenly, but unfortunately there is no thermostatic control. Taking the temperature readings and opening the vents, or even turning the unit off for a brief time, is the only way to control the heat. However, most users find this level of control more than enough for most seedlings, and appreciate its ease of use. You can also select a convenient day to receive your delivery by choosing a named day delivery (delivery on working days only). When it comes to heated seed propagators, ventilation is of the essence. Always go for a heated propagator with a ventilation system. If the temperatures in the unit rise to high levels, the thermostat will be overwhelmed. Budget

The heated propagator with air valve vent by Thompson and Morgan stands out in its own ways. It is well-built with a durable PVC plastic material, has a built-in roof vent, and comes with a 1.5m power cord. The unit is designed to provide the ideal microclimate for germination. When considering the size of a particular unit, remember that a big propagator takes time to heat up. But on the brighter side, your seeds are not likely to rot due to the effects of condensation. Ask yourself what matters. Is it the capacity of the unit or the heating speed? You also need to think about the space available for the propagator. Thermostat As I’ve already mentioned, this propagator is high performing, boosting the temperature by 8-10°C. The heat distributed is evenly spread across the base thanks to the reliable carbon fibre element, while the growing conditions can be controlled using individual vents across the 4 seed trays. The design itself is very simple. This unit consists of a heated tray with a ventilated plastic lid – you supply your own trays/pots, but it can fit 2 x 24-pot plant trays, so that gives you a good idea of its size in practical terms. My testing took place in early January (just to give a bit of seasonal context) and within 3 days the peas had started to germinate. After a week they were really going for it, and it was time to remove the lid of the cell. The giant peppers took 8 days to pop their heads through, and after two weeks we were even able to see a few strawberry stems shooting up!If there are separate trays, or there’s enough space to use your own pots, you can have a lot more flexibility on using different compost types and planting different seeds. If you find one of our competitors selling the same product which we sell at a lower price than our price then we will endeavour to match their price! Obviously, the germination time is entirely dependent on the plant or vegetable variety, but it’s just a good example that the EarlyGrow is very capable of generating the right conditions for seed germination – which is of course the most important factor here. Looks like peas will be on the menu soon! In terms of performance, this propagator can be used to grow a wide variety of seeds. It comes with a 13W carbon fibre element that provides an even heat distribution, raising the temperature by around 8°C. Having said that, it’s still best installed on a sunny windowsill if you’re growing plants that prefer a lot of warmth. Take a look at the product’s dimensions and match them up with the space you have available – propagators come in a range of sizes, so you’ll find one to fit your space with a bit of searching!