They normally do. But it is hard "seeing into the future" to determine what exactly they will do. They may either produce new foliage now or, they may decide it is too hot now, or if they do not need as much foliage then they may produce more foliage in the Spring of 2020. Arrival of Fall temperatures may abort its plans to produce foliage in 2019 so.... just give them TLC. Do not overwater of course but do not forget to give them water either.
