Posted: 07/06/2013 at 13:10
No it is not too late ...I wouldn't pinch out at 2 leaves anyway but would wait for the plant to be a bit bigger/stronger. SPs like water and feed. Tomorite at half strength each time you water should get them going. Water every day or every other day, or the bottom half will go brown. Pick flowers very regularly. If you let them seed they think they have done their thing for the year and give up. Last year Monty Don said pick ALL the flowers once a week, even those in bud. I think this was good advice.
They like warmth too so if you have a nice sunny spot....if they are in a pot of course.