When do i start fertilizing during the flowering stage?

My plant will soon be reaching 12 inches and i'm wondering when do i start fertilizing my plant in the flowering stage? Right from the start? Wait a couple of days/week? If anyone can help me out that would be great.

By the way i'm using miracle-gro moisture control soil, i used a very diluted amount of miracle-gro all purpose plant fertilizer for vegging, and now i plan on using miracle-gro bloom booster fertilizer during flowering to keep the company brand consistent.

So when do i start using my flowering fertilizer? and how much over the course til harvest?

How big of pots do you have them in.
And how long have they been in them.
Pics.always helps

You need to at the very least get some Superthrive and use along with the Miracle Gro and I would not use Miracle Gro soil in the future.

First off, you shouldn't use Super-thrive during flower, as it will slow budding. ST's a veg thing.
I start feeding mine bloom nutes as soon as I go 12/12, at half strength, and at most waterings. Halfway thru the blooming phase, I boost that to full strength, until flush, then none.

when i first started growin i used miracle grow but switched after my first grow to organic soil. easier to control smokes better and less chem taste. mircale gro has enough nutes and fert in it for 1month per gallon of soil used as a rule of thumb ive been told. but go easy on watever nutes u use during flowering and focus on P and K not nitrgen. look carfeully for over fert symptoms like leaf curling and burnt tips etc

Here are some of the latest pics.

The pot doesn't say how much it holds in relation to gallons rather its 15 inch diameter and 14 1/2 inches tall.

The slightly burnt leaves in the pics are from one of my lights falling and laying on the leaf for a short period of time, it's NOT nute burn i can assure you of that.

dude...maybe I'm just too high, but a standard 5 gallon bucket is 12 inch diameter and 14 1/2 inches deep. the container in your pics don't look anywhere close to that large.

for my 2 cents worth... i wouldn't use prenuted soil. what you should try is peat moss and perlite and a decent nutrient commonly used for cannabis (GH, FoxFarm, etc.), not house/garden plants (MiracleGro). then you can control exactly what your plants are getting. it isn't much more expensive than the dirt you have already purchased.

what are you using for lights?

GreenMeter said:

Here are some of the latest pics.

The pot doesn't say how much it holds in relation to gallons rather its 15 inch diameter and 14 1/2 inches tall.

The slightly burnt leaves in the pics are from one of my lights falling and laying on the leaf for a short period of time, it's NOT nute burn i can assure you of that.

Click to expand...

I got 6 26W warm lights cfls and 2 26W daylight lights to encourage leaf development during flowering.