>>1298599That method is known as, "side dressing" and is often done using hot manure to keep it from root burning or temperature burning the plant. I'm not really sure which is more effective so long as the nutrients get to the plant without damaging it.
>>1298620>2mThat's plenty of room. Remember to cross brace to prevent wind damage as it gets higher. You don't want them whipping back and forth like a flag. Good luck!