They are about ready for nutrients and so like @Countryboyjvd1971 said go easy with the nutrients at first.
Organic potting soil – any brand is fine but i can recommend “Happy Frog” as i have worked with this. If you can find a higher grade soil with coco in it this will be prefered. Your going to need anywhere from 8-10 bags of soil.
Worm Castings. a staple of any soil mix. very easy to produce and a great sustainable solution for food scraps in any household. Worms are your friends. Get as much worm casting as you can. Add anywhere from 5-10lb’s or so…or more!
3/4 cup Azomite for trace elements – not essential to the grow, but will set you apart.
Epson Salt – 1cup should surfice. Add more if deficiency occurrs in flower. i highly doubt it will but if it does, mix a diluted foliar feed.
Bone Meal – 3lbs blood meal
Dolomite Lime – 1 cup
Humic acids are highly recommended. Apply as recommended. usually a couple tablespoons.
Bat guano – 5lbs or so.
a couple 5 gal scoops of perlite.
Remeber to let soil dry out prior to watering. Watering is key. A good rule of thumb is try to touch the plants less and keep notes of what you are doing. If you don’t know what you did to mess things up, how will you know how to fix it?
Since I only grow around 4 to 5 plants at a time for personal use the soil mix that I use is this:
1 big bag of Fox Farrn Ocean Forest
2 4lb bags of worm casings
1 pound bone meal
1 pound blood meal
3 cups epson salts
2 cups of dolomite lime
2 bags of perlite
Water well, mix well, let sit for at least 90 days prior to using
This is an organic mix and I never have to add any ferts during growing. My biggest problem is the girls getting root bound getting big enough containers that will fit in my small grow area