Vladimir,

I would NOT add anymore come the fall ,unless you plan on keeping them warm and providing extra light like in a greenhouse or over hanging ones..

I usually stop all fertilizer by the end of summer to harden off the leaves and prevent spindly growth,weak growth irresistible to spider mites and the such..I will usually fertilize only those that are going to be actively growing a very weak dose of fertilizer once a weak if that...() In our area, there a very few days that we even get enough light for active growth from November to February..((