Want Dense Buds

Genetics, I’ve grown more than 12 different strains all at the same time under the same conditions and the same feeding chart and the same soil all fed via the same water tank. Some will turn out dense some will just about feel hard, this is why people tend to use genetics they know the outcome of, nobody really like guessing specially if they put in a lot of work but if you have the time and space why not experiment

Use and addition of two feeds of Pk 13-14 in week 4 or 5 of flowering. Bugs become rockhard

Simply put the amount of grow points will determine how much grow energy goes to each flowering point. Reducing lower hanging branches and bud site early in flowering will help the plant concentrate its energy in your chosen tops. Thus making them denser. Genetics can play a roll In this as well. Plus providing lots of potassium and phosphorus during flowering.

It's mostly genetics, then within that scope environment and other factors play a role.... this assumes it got sufficent light and resources for proper flower growth. check out a regional DLI map... you should find them per month for your area. it'll estimate how much light it gets per day, assuming it's not losing many ours to obstacles blocking light. if so, that has to be factored too. Supposedly 21-22DLI is a rough estimate for a minimum for a pot plant to add mass, or grow. At some point above that more light will mostly increase yield, but i'd bet intially incremental improvements would also help with density a bit. excessive warmth ro humidity will not turn super dense nugs to larf... they may not be as tight as otherwise, of course. if you are doing things well, the context will be 95% genetics in this regard. that's the easier way to say it. so if it was relatively healthy, and got enough light... it's as dense as you could have made it. there's no magic switch to significanlty change the fate of a plant in this regard.. i've heard some ppl physically squich the buds down a bit, but i wouldn't recommend such a thing. no point in putting lipstick on a pig. larfy buds can be good. you just might spend a bit more time removing twigs to avoid a lumber taste.