Garland Extra Large High Dome Propagator

Product Information

Having said that, it’s still best installed on a sunny windowsill if you’re growing plants that prefer a lot of warmth. Large, one-cell units that measure around 52 x 45 cm can be used to try to germinate around 140 seeds.

The lid helps to increase the humidity within as well as generate and trap warmth, particularly if placed in a sunny spot.This heated propagator is designed to fit on a windowsill, and has a single deep tray that can either be filled directly with soil or pots, which is a useful feature when you’re growing your own. The vent is a useful feature, which helps control humidity levels, and though its footprint is small, its clearance is 12cm, which is plenty of room for young plants to get started. However, this is a relatively minor issue, and overall this propagator is one of the best seven-cell options. 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.

In general, the temperature inside the propagator rises by around 8°C and maintains a consistent heat.The base features a fully enclosed and completely water proof heating element which gives an even spread of heat across the base with no hot or cold spots. Your general growing requirements will obviously determine the overall size of the unit you will need.

If you are planning to grow tomatoes, chillies, peppers, aubergines, cucumber or melons then an electric propagator will be a worthwhile investment. 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.

Some popular flowering plants such as dahlias, sweet peas, begonias and petunias are usually started off in early January too. Whether you are looking to germinate seeds early, or have been struggling to get seedlings to thrive, a heated propagator can provide very beneficial surroundings for young plants (for more information on growing different plants, check out our extensive collection of plant growing guides).