Heated propagators

In early spring, many seeds need a warmer temperature to germinate. They also sprout more reliably when the temperature is constant, rather than fluctuating. That’s why it’s far better to use a heated propagator offering even, constant bottom heat for good germination and root growth.

Some are thermostatically controlled to regulate heat output and maintain the optimum temperatures for different plants. Those without a thermostat produce a set heat output, so they can get too hot without an automatic cut off. You’ll need to ‘calibrate’ your propagator using a maximum/minimum thermometer, running the unit on each setting and noting the temperatures reached.