The annual flowers in this group have been called many colourful names, including Bitter Indian, Canary-bird vine, Canary-flower, Indian cress, Monk’s cress, Flame flower, and plain old Garden nasturtium. Nasturtiums thrive in poor to average, slightly acidic, well-drained soil. Grown in full sun, you might consider using some rocks around the plants to prevent their roots from getting too hot. In partial shade, plants tend to have larger leaves and a more sprawling habit. Keep watered during dry weather, and do not fertilize. Follow these How to Grow Nasturtiums as colourful companions for your Brassicas, cucumbers, melons, radishes, and tomatoes.