- Nasturtium don't really like being transplanted, so either direct sow them, or try starting them in peat or coir pellets.
- Nasturtium seeds need darkness to germinate. This makes starting them in pellets a little trickier because making sure they are completely covered and in darkness isn't as easy with pellets as it is with regular ole dirt.
- Nasturtium seeds germinate a lot better if they are soaked in water over night.
I started part of my Climbing Nasturtium seeds in peat pellets inside a plastic jug this year. But, because I did not soak them overnight and because I didn't make sure the seeds were down deep enough in the pellets with the peat material covering them so that they were in darkness, only about 50% of them germinated. I'm planning to direct sow the remaining (soaked for 24 hours) Nasturtium seeds.
Nasturtiums are lovely, easy to grow from seed, plants. They are beautiful in hanging baskets or spilling over the sides of a raised vegetable garden. It's not too late to pick up a pack of seeds and try them for yourself, this gardening season.