What is this?

@John_Kramer No interest in your person, neither your myths nor "science". So no hater or anything with you. 😜 If I've wanted to spread hate, I would've inserted this @ to annoy you in the most possible way. Just a clarification. As there is no contrary in the value of your comment, I assume you recognized your wrong doing - regarding the MF .. don't talk to your dad that way

TruTraTri one more personal hater detected Welcome abord MF xDDD

anyway i suggest to cut the plant soonish in its entirety. seems pretty mature, sure those tricoms are full of THC

looks like bud rot, very slowly try to open the flower apart and see if there's any brownish inside and white powder. those buds are lost but you can still save the plant anyway, the other buds look ok Anyway check healthy ones inside and see if there's any white powder there too ( unfortunately you notice the appearence of a bud rot only at a late stage) If yes cut them trim all the leaves away, then cut the bud on every node so it's easier to dry it up. 40% or 50% humidity and some ventilation but not directly pointed at the bud. Do not use H2O2 or weird methods first because there no need (A dry enivronement will stop the fungus to grow) and second because water and h2O2 will deter cannabinoids and flavour. hope ths helps

Bud rot 100 %

Q: What is this? A: Molecular level. ctrl+c ctrl+v (hope so..) Just for safeness... Take home message from the outburst: Don't smoke buds that are diagnosed by J_K that have deficiency, lockouts or something!!!!!! Perhaps another myth bust is in order... how to smoke deficiency.

prune it off well below the rot and pray it didn't spread.

A calcium deficiency can significantly impact plant buds, causing smaller, weaker buds, and can even lead to bud abortion or the development of deformed buds during the flowering stage. These issues arise because calcium is crucial for strengthening cell walls, regulating nutrient uptake, and facilitating rapid flower development; without it, bud size and quality are reduced, and plants become more vulnerable to disease. How Calcium Deficiency Affects Bud Development Weakened Structure: Calcium is a key component of cell walls, and a deficiency leads to weak cell walls, resulting in smaller and less dense buds. Reduced Nutrient Transport: During flowering, plants require more calcium to transport nutrients effectively to the developing flowers. A deficiency hinders this process, leading to poor bud development. Bud Abortion: In severe cases, a calcium deficiency can cause the abortion of flowers, meaning the plant sheds them before they can fully develop. Deformity: Buds may develop with deformed or irregular shapes, impacting their overall appearance and quality. Increased Disease Vulnerability: Weakened cell structures make the buds and the entire plant more susceptible to infections and other stressors. Key Factors and Considerations Mobile Nutrient Status: Calcium is not a mobile nutrient in the plant; once it's incorporated into the cell walls, it cannot be released or redistributed to new growth. This means new buds will be particularly affected. Timing: While calcium is needed throughout the plant's lifecycle, the flowering stage requires an increased supply for proper bud development. Concurrent Deficiencies: Calcium deficiencies are often accompanied by or confused with deficiencies in other nutrients like magnesium, iron, or imbalances in potassium, making diagnosis challenging. Preventing and Fixing the Deficiency Maintain Proper pH: A low soil pH or low pH in the nutrient solution can hinder calcium uptake. Ensure Adequate Calcium Supply: Provide a balanced nutrient solution that contains sufficient calcium. Avoid Stress: Factors like drought stress and high salt levels can interfere with calcium uptake and exacerbate deficiencies.

spider mite + overfeed ? looks like lockouts and pest problem

Looks like bud rot. If you can pluck the leaves easy and they are slimey; it's confirmed bud rot.