The nasturtium is an indispensable part of the now very popular cottage gardens. It is uncomplicated and easy to draw. The seeds germinate in about 10 – 20 days at a temperature of about 15 – 18 °C (59-64 F).
You can start sowing on the windowsill as early as March. Outdoors, only sow after the ice saints, because the nasturtium is not frost hardy. It is best to choose a sunny to partially shaded location.
How to properly sow nasturtiums
The nasturtium germinates in the dark, so you should cover it with about 1-2 cm (0.39-0.70 inches) of soil. Always keep the seeds nice and moist during germination. If you soak the seeds in warm water before sowing, they may germinate better.
Accelerate seed germination by soaking in warm water.