Nasturtium (Tropaeolum majus) and Sunflower (Helianthus annuus) do not transplant well from a seed-starting tray. If germinating the seeds indoors, they should be started in biodegradable pots ...
Keeping track of when to start seeds of your favorite flowers, herbs, and vegetables indoors can feel a bit daunting, especially since some seeds need to be planted a lot earlier than others.