What should I start feeding it? And when and how o...

They look great, green and healthy. Depending on what your outdoor soil has to offer you'll want to start adding in some nitrogen products, and even low doses of PK are good. If your soil is poor then look into some micro nutrient as well. Any microbes or mycorrhizal products will help your soil as well and make happy roots. Silica products like potassium silicate will help strengthen your stalks and help fight off various diseases powdery mildew etc. I listen to this killer podcast that has great info its the kis organics cannabis cultivation and science podcast. Happy growing ✌️

First i would add a root booster asap i would get a tape measure and go 10inches each way i would add 20ml a gallon of kelp to start off with the max amount of root booster u choose i would also get a bag of worm compost and go that same 10 inches around and sum Great White mycorrhizae to sprinkle u will need all the help nute wise because right now that plant isnt getting enough light NO FOOD AND NO LIGHT =⚰️⚰️⚰️⚰️⚰️

Hi @UncleChester! Your plants are looking great. They will need a bit of extra Nitrogen during the upcoming stretch, and some P+K booster during flowering. You can buy fertilizers at your local growshop or make your own (compost tea, molasses, seaweed, fish mix...). Start with 1 fertilized meal by week, and if they're reacting well, you can push to 2 meals per week. Hope this will help, keep us up-to-date and happy growing 👊

As if you are growing outdoors, there normally should be no need to feed them before flower. or showing signs of defiency. I give my outdoor grows a nice soilbed with prefertilised soil for the start and when they arebigger they take their nutes from the soil around them. If you are unsure, just post a picture of yur girls and we can look if she needs anything. My girls get only some flowering booster

Hello! Your plant is 4 weeks old with a good green colour and you'r growing outside in soil so if you did not pre fertilizer your soil you can do it now to give her a boost because nutrients will not get easily available with your outdoor soil. Now for the frequency you need to give your plant water then nutrient and repeat, if you see an excess or a nutrient burn with that schedule then try water/water/feeding and repeat. I hope it will help you 😁👍