23 days to go now these black spots , any ideas?
- Thread starter f1bud
- Start date
bamfrivet
Well-Known Member
Did you switch to flowering nutes when you switched your lights? Or did you keep using vegging nutes for a few feedings after you switched the lighting? If you switched straight to flowering nutes, then that's probably what the problem is. Your plants shouldn't be yellowing at any point in your plants life. People just don't give their plants enough N in flowering and starve them for the last 2 weeks by flushing them.
f1bud
Active Member
they seem fine ither than bein very yellow now, i did introduce a little home made c02 bottle in me tent the other day, probly a coincidence but ya never no? its just im'e so close to the end and now the fookin thing,lol, if it one thing its another, first time so new there wud be some headaches allong the way, just want somethink 2 smoke man !!!!!!
Kingrow1
Well-Known Member
If its not insect damage it is deficiency, common ones at the top at the end of flowering for me are boron and a few others. Add some micro nutes and boost the nutes if you are underfeeding.
Every time i get burning like this it is when i am underfeeding. Look for it to stop after a day or so from feeding and added micro nutes or start to consider somthing else. Peace
Every time i get burning like this it is when i am underfeeding. Look for it to stop after a day or so from feeding and added micro nutes or start to consider somthing else. Peace
calicko
Well-Known Member
I agree with Kingrow1, its either a Boron or Iron def. But I would stay away from previous comments about your plants looking pale. For many species of cannabis, especially Sativas, fan leaves turn lime green or even brown at the the peak of flowering...its nothing to worry about so dont go looking for the N ferts, itll only make your plant taste like shit when smoked!
Kingrow1
Well-Known Member
Quite possibly you are deficient in a lot of things just at this late stage boron shows through. Iron is another good one and manganese i think. If the plants are pale nitrogen would be good but a lot less than phosphorous or potassium. Some like a nitrogen deficiency at the end of flowering but too much is bad, should be like a minor deficiency not a major one.
You should be able to look back over the flowering period and the ferts NPK and trace elements that you have given the plant and be able to work out wether you simply been underfeeding or just need more trace elements.
This will only be underfeeding if it stops with a good fert and especially the trace elements, somthing like liquid seaweed should take care of that. Keep us updated. Peace
You should be able to look back over the flowering period and the ferts NPK and trace elements that you have given the plant and be able to work out wether you simply been underfeeding or just need more trace elements.
This will only be underfeeding if it stops with a good fert and especially the trace elements, somthing like liquid seaweed should take care of that. Keep us updated. Peace
