You can purchase nasturtium seeds from virtually all gardening centers or look online. There are a variety of online retailers that offer the seeds and they are very inexpensive, particularly considering that they grow with very little care. Take the time beforehand to determine the specific variety of nasturtium plants that you want.
Should you deadhead nasturtium?
Nasturtium maintenance is very light. Aside from regular, weekly watering, you don't need to prune or deadhead. Soil does not generally need to be amended as these plants do very well in lean, light, and well-drained soil.
Do nasturtiums repel insects?
Nasturtium. Nasturtium repels whiteflies, squash bugs, aphids, several beetles, and cabbage loopers. This one will help other plants in your garden, too. It produces an airborne chemical that repels insects, protecting not only themselves but other plants in the grouping.