I personally would at least chop them out of the ground. In the experiment I did with viewing trichomes under a microscope and viewing how much/if the trichomes continue to develop after chop… My personal evidence showed that it continues to go for a few days after being chopped. I couldn’t say why this happens because I did not test multiple variables, or really record any variables other than photo evidence. If I had to guess it has something to do with moisture retention… Keeping part of the plant alive. Also if you think about it, if the resin coats the bud, then you could reason to believe it shields moisture evaporation?? So if you wait longer than where you want your weed, it’ll matter. In my opinion.
P.s. I know nothing 
and now I’m rambling.
Take a look: