Day 4 Flowering-Brown Spots

HonestJim

HonestJim

Active Member
I am in my 4th day of flowering my 2 white widows. I am using soil, MG nutes, and a 150 HPS. Over the last few days I have noticed brown spots appearing on my leaves. After some mad google work I am thinking this is being caused by magnesium deficiency. I wanted some second opinions before taking action, or the wrong course of action. From what I have read some 2% Epson salt solution should clear this up. Any opinions advice on this ???
 
asdewqasdfgh

asdewqasdfgh

Active Member
we need more info on your setup. temps, humidity, pH, amount you are feeding. it looks like a deficiency which is caused by high/low pH. if your pH is too high or low your plant wont be able to consume the nutrients you are feeding it.
 
Clint Torres

Clint Torres

New Member
Most likely that is an Iron(Fe) deficiency. Most likely. Although the burnt, up-curling leaves with inter-veinal discoloration That your leaves have is what concerns me as this does point to possible Mg problems. If the tips of your older fan leaves turn yellow and curl upwards and then exhibit "chlorosis discoloration" that IS indicative of Mg deficiency. This can be caused by feeding too much Potassium(K) to your plants. if this is the case uptake of Magnesium, Manganese, Zinc and Iron can be aggravated. It can also severely affect the plants ability to use calcium which is essential.

use one or both of these products as part of the regular feeding schedule and that should stop.

http://www.sea-of-green.com/big-bloom.html

http://www.sea-of-green.com/earth-juice-microblast.html

Caution: the microblast goes a long way and must be diluted to about 1/4th dosage to feed everytime. for that reason I use 1/2 strength doses of the Fox Farm Big Bloom for regular feeding and then will give two feedings with light doses of microblast. each has some stuff the other doesn't, that's the only reason i switch but it works for me.

Also i have been taught that it is best to underfeed and under water your plants a bit than to over do ANYTHING. Overdoing anything will cause you far worse problems that those little spots.
 
HonestJim

HonestJim

Active Member
asdewqasdfgh said:
we need more info on your setup. temps, humidity, pH, amount you are feeding. it looks like a deficiency which is caused by high/low pH. if your pH is too high or low your plant wont be able to consume the nutrients you are feeding it.
Click to expand...
Humidity has been on the low side because it is winter, like 20-50%. This setup is in my attic, so I run my HPS light at night to control temperatures. Its been 60-70°F during the day and dropping down into the 40's, at night. The lights get the plants warm at night though. I was told PH wouldn't be an issue with soil plants, and that Hydro growers were the ones that had to worry about that.
 
HonestJim

HonestJim

Active Member
Clint Torres said:
Most likely that is an Iron(Fe) deficiency. Most likely. Although the burnt, up-curling leaves with inter-veinal discoloration That your leaves have is what concerns me as this does point to possible Mg problems. If the tips of your older fan leaves turn yellow and curl upwards and then exhibit "chlorosis discoloration" that IS indicative of Mg deficiency. This can be caused by feeding too much Potassium(K) to your plants. if this is the case uptake of Magnesium, Manganese, Zinc and Iron can be aggravated. It can also severely affect the plants ability to use calcium which is essential.

use one or both of these products as part of the regular feeding schedule and that should stop.

http://www.sea-of-green.com/big-bloom.html

http://www.sea-of-green.com/earth-juice-microblast.html

Caution: the microblast goes a long way and must be diluted to about 1/4th dosage to feed everytime. for that reason I use 1/2 strength doses of the Fox Farm Big Bloom for regular feeding and then will give two feedings with light doses of microblast. each has some stuff the other doesn't, that's the only reason i switch but it works for me.

Also i have been taught that it is best to underfeed and under water your plants a bit than to over do ANYTHING. Overdoing anything will cause you far worse problems that those little spots.
Click to expand...
I appreciate the reply and I will definitely look into gettin some of those nutes. I have read that Epsom salt its a good remedy for this. I also read that it doesn't hurt to use epsom salt even if it doesn't turn out to be magnesium deficiency. Although, from what I have read and the symptoms you have described thats what I think it is. Any experience using epsom salt ?
 
smallclosetgrowr

smallclosetgrowr

Well-Known Member
looks like u could be feeding them 2 much or have to much of 1 nutrient causing a lockout of another. , i can see some nute burn there on the tips of the leaves, doesnt look like mag deff to me, calcium if anything.i would advise not even feeding them with fertilizer and just keep watering them only and they will be fine.if your super worried go out and by some blood and bone, or dolomite lime, lime is packed with calcium and mag.
 
smallclosetgrowr

smallclosetgrowr

Well-Known Member
dont bother with epsom salt, your better off giving your plants a good feed with a soluable fertilizer nowadays.but in your case just leave your plants
 
M

Mr.Buds

Well-Known Member
the browning of your tips are either Magnesium or Iron deficiency, which usually occur simultaneously. the Chloris spotting between the later veins could be calcium def. How old are you plants?
 
HonestJim

HonestJim

Active Member
Mr.Buds said:
the browning of your tips are either Magnesium or Iron deficiency, which usually occur simultaneously. the Chloris spotting between the later veins could be calcium def. How old are you plants?
Click to expand...
Like two months old. The spots are not gone yet but they have improved since I stopped my veg nutes. I went with just water for a week and just started bloom nutes. My new growth looks great, but the older fan leaves still have small amounts of spots. 10 days into flowering and I have beautiful pistils coming in. Tonight when I get home I will take some pics of the plants so you can see what they look like now.
 
M

Mr.Buds

Well-Known Member
Ya, post updated pics....as long as the new growth doesn't have the spotting, you should be good. There is not much you can do to bring back the color of the dead spots on the older leaves.
 
HonestJim

HonestJim

Active Member
Mr.Buds said:
Ya, post updated pics....as long as the new growth doesn't have the spotting, you should be good. There is not much you can do to bring back the color of the dead spots on the older leaves.
Click to expand...

Will do, my lights come on about 10pm ET so I will get in there a few minutes before that and snap some picks. Thanks for the knowledge, I appreciate it.
 
StuFish

StuFish

Member
A word about Ph... Yes, you need to adjust it, even in soil. The general range is 6.0 to 6.5 for soil. Uncorrected Ph can lock out nutes, and then the plants will begin to show all kinds of deficiencies. Just my 2cents.
 
HonestJim

HonestJim

Active Member
StuFish said:
A word about Ph... Yes, you need to adjust it, even in soil. The general range is 6.0 to 6.5 for soil. Uncorrected Ph can lock out nutes, and then the plants will begin to show all kinds of deficiencies. Just my 2cents.
Click to expand...
How do you adjust the PH when dealing with soil ? Spike your water with Lime Juice ?
 
StuFish

StuFish

Member
Hey Jim, sorry for the LATE reply, I didn't have my notifications set up properly. Have they finished flowering?
 
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