Kent,
United Kingdom 
I have had some agapanthus plants for about 3 years now. First I had them in the garden , then I put them into pots because they did not flower, and they still haven't this year. What can I do to get them to flower? Joyce
13 Sep, 2010
Answers
It could be that they have not reached flowering size yet I have a Agapanthus caulescens and it has taken 4 years to flower but it’s really worth the wait
13 Sep, 2010
Previous question
They like to be quite congested in the pot and in as much sun as possible. Don't plant them too deeply either. Try feeding them with a tomato food next spring.
13 Sep, 2010