Nasturtiums are a type of flower that members can grow from nasturtium seeds. This requires level 24 Farming, and grants a total of 130.5 experience - 19.5 for planting, and 111 for harvesting[1]. Only one bunch of nasturtiums is ever harvested, even if they grow without becoming diseased.
Players can pay a farmer one bunch of nasturtiums to look after growing wildblood hops[2].
Nasturtiums growing in a flower patch helps to protect watermelons in a nearby allotment patch from disease[3].
Players can also use nasturtiums to make their own imp repellent by adding them to anchovy oil[4].
The nasturtiums in RuneScape may be based on Tropaeolum majus - see Tropaeolum majus, Wikimedia Commons for more pictures.
References
Template:Wpalso