Heat. Just read some Ask Ed this weekend. Days over 85. Even though the plants can live, and even thrive in high heat, 90-100+ make for stringy plants... like Sativas. Maybe the real 'changes' to the land-races that we know.
Bad light makes them 'stretch' but, bad light will give you airy buds... but bad, airy buds to boot.
Stay cool, stay safe.
'Dammit Jack, why do you always get to go first...'
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. Ayn Rand
I live in a tropical climate and the above is right. The main cause is heat. We can grow some nugs the size of your fist but they are gonna be foxtailed if its a good strain. Otherwise they would die of mold most likely. I've never heard of bad light, but if the light is to far you can also get airy buds.
I think it's the plant itself. I've had crops (that were all one strain) and had airy budded plants, right next to it's thick tight giant bud sister. So it may be heat, it may be poor lighting, or it may just be shit luck...
I read somewhere someone mentioned that any stress will stunt growth. Anyone believe deficiencies can create plant stress that contribute to this? And is temp itself the issue, or rather stress, as the result of high temps? Just wondering if staying as stress-free as possible would contribute much to correct the issue.
I seek the reek!
~ Regret: Those were the droids I was looking for! ~
In my experience...heat is a big one...also the strain. sativas are good for this...cutting early as well a mostly sativa strain would need more then a regular 8-9week indica strain. mostly sativa strains have gotten nice and nuggy if given the proper time to mature for me. sativas are a bitch.