Question
 

Answer
Kathy,
After the main stem of a snap dragon finishes flowering, you should cut it off just below where the flowers were.  If you have a mini-bush snap dragon, cut all the stems that have finished flowering off just below where the flowers were.  Give the plant a liquid feed with fertilizer (any general liquid fertilizer is fine - mix according to directions) and water when the soil is dry - the plant should make side shoots that flower, although it won't produce a big main stem again.  

I hope this helps!
C.L.