By Hoptonlynda
County Durham,
United Kingdom 
my nurstershums haven't flowered this year
9 Jul, 2014
Answers
Did you feed them? Sometimes if you feed Nasturtiums they put out loads of leaves but no flowers, they flower best in poor soil.
9 Jul, 2014
When did you sow the seed? If been outside all the time and in County Durham I would not expect them to flower for a few weeks yet...but then flowering till frosts if you deadhead/slugs eat em'.
9 Jul, 2014