CrookedEye
New member
I have a room full of beauties but one or two of them that are in their 4th week of flower have some yellowing in the leaves in the middle of the plant, and it looks to be getting nearer to the new growth. They are yellowing, and the very tips are turning light brown and curling up. In the yellowing, there is also rust colored spots, and the very tips of those leaves are the lighter brown that are crispy and turning up. Some of the lower yellow leaves (not the very bottom leaves, but lower middle) have the rust spots, but spaced out much more than the one's near the center of the plant, and the same goes for the upper middle leaves. The problem seems to be stemming from the center of the plants colas, not the bottom or top.
They were originally potted in sphagnum peat and perlite, without the dolomite lime, and vegged for a month, or more, without nutrients. They were showing deficiencies during vegging that cleared up when I started feeding them. The PH of the nute solution was adjusted to the proper level with dolomite lime (about a 10 tsp per 25 gallon mix), and they have been receiving the Fox Farms full nutrient line, as directed by the feeding chart. They also receive two TBSP of BS molasses every watering. The water is tap that measures around 7.5, and is bubbled for at least 24 hours. The nutrients are all mixed in and the PH adjusted, then it is bubbled for at least another 2-3 days. The PH is then checked again, adjusted as needed to around 6-7 (liquid PH tester with color chart), before being used. They are all green and pretty except one or two different phenotypes, in one or two plants only. The rest are vibrant green and they all have nice nuggets on them.
The 3 gallon pots that were only sphagnum peat and perlite originally, were transplanted into 5 gallon pots of a mix of happy frog, light warrior, ocean forest, perlite and about a tablespoon of dolomite lime per gallon of soil. They have been getting fed once a week, no plain watering in between, until this week when they were given excess 1/4 strength nutrients (1/4 recommended on fox farms feeding chart), with a 1TBSP of BS molasses per gallon of water added, as well as hygrozyme, and about half strength recommended dose of superthrive, after transplanting.
The bags were cut away and removed slowly to not damage roots and then were set into the 5 gal bags and the soil filled around the root mass, then watered with the excess 1/4 strength solution. I normally wouldn't transplant during flowering but the grow bags were easy to cut away and the plants were pretty rootbound as they had been vegged for 2-3 months from seed and are now in the 4th week of flowering, so probably growing about 14-15 weeks total.
As I said, only one or two plants is showing this problem, while the rest are rich green, with no visible problems. Two of the more sativa looking phenos are a bit lighter. The heavier sativa phenos were yellowing a bit, but began getting a bit greener since the transplant and 1/4 strength nute feeding/flushing about 3 days ago, and they show no necrosis.
I am not sure if this is a PH problem from the peat with no dolomite lime mixed in, since they had been growing fine in veg and up until this last week of flowering. All plants have been fed the same, but only this one and possibly one more are starting to show anything similar.. The PH of the nute solution to be fed each time had been checked to be between 6-7, but the run off hasn't been checked again since early on with the peat, when the runoff PH was showing between 5-6. I stopped checking the runoff after beginning feeding because they all were growing very healthy. Only the PH of the feeding solution has been checked since, and it has always been between 6-7. I also sprinkled a TBSP of dolomite lime over the top of the soil before watering in the first week of flowering.
It could just be deficient in magnesium, but I have been adding dolomite lime to every feeding (10 tsp per 25 gallon solution), as well as BS molasses at 2 TBSP per gallon, and the rest of FF's line as well as the open sesame, all exactly as the feeding chart says. I started them at 1/2 strength and moved to full strength within the first two weeks and they have seemed to be eating it up, until this one plant started showing the leaf trouble about a week or so ago. I could possibly get webcam pics, but they aren't very crisp. If anyone doesn't understand what I am describing, then I'll try and post a pic.
Thanks in advance for any help. It's only the one plant but she has some chunky colas and I'd hate to affect my yield in a bad way, so I'd like to get on top of this. Not sure whether to feed her more or flush her more, as they have all been getting pretty heavy feeding per FF's feeding schedule, until the 1/4 strength flush a few days ago. What do you think?
Pics:
They were originally potted in sphagnum peat and perlite, without the dolomite lime, and vegged for a month, or more, without nutrients. They were showing deficiencies during vegging that cleared up when I started feeding them. The PH of the nute solution was adjusted to the proper level with dolomite lime (about a 10 tsp per 25 gallon mix), and they have been receiving the Fox Farms full nutrient line, as directed by the feeding chart. They also receive two TBSP of BS molasses every watering. The water is tap that measures around 7.5, and is bubbled for at least 24 hours. The nutrients are all mixed in and the PH adjusted, then it is bubbled for at least another 2-3 days. The PH is then checked again, adjusted as needed to around 6-7 (liquid PH tester with color chart), before being used. They are all green and pretty except one or two different phenotypes, in one or two plants only. The rest are vibrant green and they all have nice nuggets on them.
The 3 gallon pots that were only sphagnum peat and perlite originally, were transplanted into 5 gallon pots of a mix of happy frog, light warrior, ocean forest, perlite and about a tablespoon of dolomite lime per gallon of soil. They have been getting fed once a week, no plain watering in between, until this week when they were given excess 1/4 strength nutrients (1/4 recommended on fox farms feeding chart), with a 1TBSP of BS molasses per gallon of water added, as well as hygrozyme, and about half strength recommended dose of superthrive, after transplanting.
The bags were cut away and removed slowly to not damage roots and then were set into the 5 gal bags and the soil filled around the root mass, then watered with the excess 1/4 strength solution. I normally wouldn't transplant during flowering but the grow bags were easy to cut away and the plants were pretty rootbound as they had been vegged for 2-3 months from seed and are now in the 4th week of flowering, so probably growing about 14-15 weeks total.
As I said, only one or two plants is showing this problem, while the rest are rich green, with no visible problems. Two of the more sativa looking phenos are a bit lighter. The heavier sativa phenos were yellowing a bit, but began getting a bit greener since the transplant and 1/4 strength nute feeding/flushing about 3 days ago, and they show no necrosis.
I am not sure if this is a PH problem from the peat with no dolomite lime mixed in, since they had been growing fine in veg and up until this last week of flowering. All plants have been fed the same, but only this one and possibly one more are starting to show anything similar.. The PH of the nute solution to be fed each time had been checked to be between 6-7, but the run off hasn't been checked again since early on with the peat, when the runoff PH was showing between 5-6. I stopped checking the runoff after beginning feeding because they all were growing very healthy. Only the PH of the feeding solution has been checked since, and it has always been between 6-7. I also sprinkled a TBSP of dolomite lime over the top of the soil before watering in the first week of flowering.
It could just be deficient in magnesium, but I have been adding dolomite lime to every feeding (10 tsp per 25 gallon solution), as well as BS molasses at 2 TBSP per gallon, and the rest of FF's line as well as the open sesame, all exactly as the feeding chart says. I started them at 1/2 strength and moved to full strength within the first two weeks and they have seemed to be eating it up, until this one plant started showing the leaf trouble about a week or so ago. I could possibly get webcam pics, but they aren't very crisp. If anyone doesn't understand what I am describing, then I'll try and post a pic.
Thanks in advance for any help. It's only the one plant but she has some chunky colas and I'd hate to affect my yield in a bad way, so I'd like to get on top of this. Not sure whether to feed her more or flush her more, as they have all been getting pretty heavy feeding per FF's feeding schedule, until the 1/4 strength flush a few days ago. What do you think?
Pics:
