Should I cut right now?

"Flushing" the medium doesn't change the mineral content of the flower. Doesn't 'flush' anything from the plant. The plant has no excretion system that can do such a thing through watering. So, only do it if your leaves are robust enough to supple necessary building blocks for those terps and thc molecules we value. Can't manifest mass from the ether. it probably has zero effect unless you were overfeeding before.

Different take here. No water for the last few days (they do look ready to chop!). This reduces water in the plant for the drying/curing stages, and allows for a more even dry/cure. Getting to this point is excellent, but the smoke/flavor you likely desire needs more work. Drying/curing requires even more patience, and this might give you a better start for those processes. In my humble and limited opinion.

Whether you should flush now or cut immediately depends on your growing medium, what nutrients you used, and how much you care about a "perfectly" smooth smoke versus maxing out weight. If you are in soil, you can give them plain water for 3–7 days to let them use up leftovers, or just chop now if they are truly ready. If you are in hydro/coco, a few days of plain water is recommended, but not strictly mandatory. they look 100% ready (trichomes are milky/amber), you can harvest now. However, if you want to be safe, give them 2-3 days of plain water only, let the medium dry out, and then chop. This acts as a partial flush without risking significant nutrient starvation. Gluck

Hi 🙋‍♂️, Based on what I See you entered harvesting Zone. Perfect timing is dependant on your personal Preferences. If you Like sedative effects you can wait for more amber trichomes… you also get higher yield. If you want to achieve more head high, you should harvest as much Milky as possible with lowest amount of amber and clear trichomes. This is also the THC Peak. Hope This helped you. Enjoy the Smokes once ready 👊👍🤞🏽