How do you overwinter an agapanthus?

Overwintering is keeping tender plants protected so they will live until the next spring,when they appear again!

Mandevilla is a evergreen climber native to Brazil. Unless you have a greenhouse, overwinter mandevilla in a semidormant state with reduced light and cooler temperatures as found in a normal...

I pick all my strawberries and don't do anything with them until fall. Then in the early to mid fall I cut them down with our lawn mover. By winter they will have grown back some. I don't do anything...

The most likely reason is too little light. Agapanthus will flower when the soil is quite poor, so it is unlikely to be lack of nutrients.

yes it is scientifically proved