Sick plants, black leaves curlinng etc, overwater?

[PatSajak]

I cant' figure out what the problem is, I've got 5 plants I just switched to flowering about 2 weeks ago, 3 are looking great and budding nicely, 1 has been dieing and not budding, and the other one is on that same path, spreading these Black marks all over the leaves, and then they turn yellow and curl up and are cruncy/die and i have to pull them off.. It spreads from the bottom leaves and gets all the way to the top leaves, only the newest growths are green, but the 2nd to newest growths are starting to get those black marks as well.. most of them have black on the tips of the leaves, but not all..

I water roughly the same amounts eveyrdya to the plants, but figuring this may be overwatering (and still think this might be the case) I've been drying out them a little bit, and only watering the dieing ones a little bit.. But after just giving it a little bit, the worse plant was very unahppy and started to droop again.. So I skipped watering completely yesterday and it got pretty dried out, and today I gave it a little water + epsom salt and it doesn't seem to be drooping like hell like it usually does around this time, but still its not looking happy... so maybe indeed its OverWatering.. the leaves are like rotting away?

Just wanted to see what you guys think, at first I thought it was calc def or mag def, and i hooked them up with calc but it did not help, and today i put a a tsp. of epsom salt for magensium in a gallon and fed gave them a little bit.. maybe 18 ounces.. because they were extremely dry

I've been reading all the deficiency issues and I couldn't come across this black/brown marks spreading on the leaves.. Even the stem vein becomes discolored and brown..

is this because of overwatering? how can I improve their health the fastest, just keep them dried out? just wondering if this may be something else and if I shoudl flush

thanks in advance for all your opinions and help!

PatSajak Reviewed by PatSajak on 01-27-2007. Sick plants, black leaves curlinng etc, overwater? I cant' figure out what the problem is, I've got 5 plants I just switched to flowering about 2 weeks ago, 3 are looking great and budding nicely, 1 has been dieing and not budding, and the other one is on that same path, spreading these Black marks all over the leaves, and then they turn yellow and curl up and are cruncy/die and i have to pull them off.. It spreads from the bottom leaves and gets all the way to the top leaves, only the newest growths are green, but the 2nd to newest growths are Rating: 5

[PatSajak]

Sorry wrong forum!!

[Weedhound]

If you're growing indoors, even soil, this is the forum for you! Some one here will be able to help. Leave it I say!

[invision]

what is the PH of your soil?

have you been giving them flower nutes and if so how much?

you shouldnt water daily, soak them and let them dry out then repeat(takes 2-7 days to dry out)

lets start here.

[Chronic Chrissy]

I hope this helps

"Manganese(MN)
-immobile

Deficiency: Young leaves yellow between veins and veins remain green. Symptoms spread through older leaves. Dead spots develope on severely affected leaves before they fall off. Plant is stunted and maturation is prolonged. Severe deficiency looks like a severe lack of magnesium.

Toxicity
Young and newer growth developes chlorotic dark orange to dark rusty brown molting, first on young leaves then progressing to older leaves. Slow growth and loss of vigor. Toxicity is compounded by low humidity. The additional transpiration causes more Mn to be drwn into foliage. excess Mn causes deficiency of Fe and Zn."

I'll be back to post more tommorrow it's late here, 'night.

May also be Phosporus toxicity too or Potassium

[PatSajak]

Hey guys, thanks for the help.. I've been watering a lot less and it seems to be helping, under the 24 hours they dried out a lot quicker than being on 12/12. But they still dry out pretty quickly. I'm using fox farms soil and I have given them 2 feedings of tiger bloom so far, but only a 1/2 dosage, and I use big bloom supplement like every other day with my watering. PH of water is 6.4, not sure what my soil is

I figured it might be the manganese so I gave them epsom salt but I don't know if that really did anything, the veins turn brown as well.. Seems to start fromt he bottom leaves and moves its way up. I just turned on my lights now for 12 hours of light, and finally the 2 struggling girls are starting to bud, so I'm taking that as a good sign and i'm going to change up the way I water a bit to dry them out more.. They get dried out very quickly though beacuse I live in the desert, thats why I've been watering them with like 36-48 ounces everyday.. Hoping this is the problem i guess, just worried that it might not be, I didn't think overwatering would have this type of effect.. maybe its overwatering + a toxicity / nute burn ?

[PatSajak]

A lot of the leaves that have those black marks on them are turning yellow now, its hard for me to tell if the problem is still rapidly spreading, it seemed to slow down if so, but i hate the looks of the two girls, look so sick

if its a toxicity should i jsut flush today? i've never flushed so it makes me me a lil nervous and i'll have to look up exactly what to do when i flush and afterwords

[Chronic Chrissy]

You're not out of the woods yet.First why did you change your light cycle you're in bloom? I hope you only changed the cycle for he sick plants and left the healthy ones alone.

Second what's the pH of the soil. May deficientcies are the result of incorrect pH. If you have a liquid tester where you put water in a little container ad a few drops and shake, Then take some soil put in in a little pH water, let the soild settle then check the pH. You can also check the pH of you run off water.

Third did you feed the sick ones again? You should stop and put them on only pH water. With 2 weeks left in flower I think the goal here is to figure out how to fix the problem so you know for next time not produce since she isn't budding.

Do you know when the water? Stick you finger gently into the soil over an inch down if it is still moist leave it be, if it is dry then is a good tie to water. lso you want just a little coming out the bottom so you know it is evenly watered, but don't let it sit in the run off.

I'm flipping through my book here noticing similarities regaurding many different elements. That means that you have a pH problem or and excess/deficiency or one element is effecting the ratio of the others and throwing the whole thing out of whack. I hate to say it but sometimes less is better especially when it comes to nutes. One of the other nutes that I suspect it you Phosphorus which would make sense sine everything tell you that plants need more P while flowering so you want to make sure they don't run out.

I don't know what else to tell you man, I could sit here all day but baby's waking up, gtg, good luck.

[PatSajak]

Hey thanks for looking into your book. I didnt change the light cycle, i meant when i switched to bloom 2 weeks ago, i'm 2 weeks into bloom now

i havent' fed the sick ones again, just been giving it a little bit of 6.4 ph water, with a little epsom salt (because it looks like a mag deficiency). They seem to be doing better finally and have been starting to bud in the last couple of days, which makes me happy.. Both the two plants are white widows, my other 3 widows are looking excellent and have many more sets of leaves than the 2 sickly ones

I water everyday until a bit comes out the bottom and have been throughout the Veg process because i live in the dessert and its so dry, they loved it and got huge during veg, but I think I will change that up now and water every other day..

I think i overwatered for like the first week of flowering (because i guess they dry out slower under 12/12).. We always thought that was the prob., but i didnt really think thats how they would react to overwatering, with the black marks and then yellowing and dieing off of the leaves. It could be PH issue, I don't know the PH of the soil but I will try to go get one to find out

I was looking up Phosphorus deficiency symptoms after you mentioned and that looks like it could be the problem too. I think I'll wait at least a few days before I give it any Tiger Bloom or other fert with phosphorus

I'm hoping they continue to improve slowly in the next few days, crossign my fingers!!

[Chronic Chrissy]

good luck