Plants act weird when they revert back to veg from budding and despite what some may say it takes a LONG time before the plant exhibits rapid new vegetative growth. Generally you don't want to go outside until around Mothers Day, ideally May 21st though.

I had a plant I harvested at the end of May, I left most of the leaves and some of the buds on it and decided to see what it would do if I left it outside. It took FOREVER to show significant new growth and clones I took from it are already bigger then the mother plant and they were 12" clones when I planted them, the mother plant was 3 feet tall with full root and stem development.