Yellowing on one plant

Greenthumbgrower1986

Greenthumbgrower1986

Well-Known Member
Hi all currently have a run of 3 fastbuds auto cheese, they are about 2 weeks into flower. I'm growing in soil using living soil dry ammendments, I use tap water that has been left out for 24hours then use bio bizz pH down to get to the pH 6.4. all 3 plants have the same amount of feed but one has started randomly yellowing, it's not from bottom up, its random. Does any one have any ideas?
 

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Nutty sKunK

Nutty sKunK

Well-Known Member
Greenthumbgrower1986 said:
Hi all currently have a run of 3 fastbuds auto cheese, they are about 2 weeks into flower. I'm growing in soil using living soil dry ammendments, I use tap water that has been left out for 24hours then use bio bizz pH down to get to the pH 6.4. all 3 plants have the same amount of feed but one has started randomly yellowing, it's not from bottom up, its random. Does any one have any ideas?
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Are you growing in fabric/air pots? Or solid?

I see your intake is closest to that plant. Could be drying the soil out faster than the others
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Greenthumbgrower1986 said:
Plastic pots, soil isn't drying out any faster then the others. Ruffly watering every 3 days once pots are dry
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Righto. It’s looks like low S (sulphur)

Some phenotypes can vary wildly in terms of feed from others.

If I were you I would add 1tbsp of Epsom salts per 1 gallon of feed. Then after that do 1tsp per gallon and keep it there until last 7-10 days of plants life.

I read recently that Sulphur although a micro nutrient and should theoretically yellow from top down. Was actually observed to yellow from the bottom up on plants.

The yellowing of the tips to the fan leaves to the base of the leaf indicate this. Low nitrogen will make the leave yellow more uniformly.

Also a lack of S can cause burnt tips, the difference is, is that the tips will initially yellow before then black/brown and crispy.

Nutrient burn makes the leaf tips turn instantly dead, crispy
 
Greenthumbgrower1986

Greenthumbgrower1986

Well-Known Member
Nutty sKunK said:
Righto. It’s looks like low S (sulphur)

Some phenotypes can vary wildly in terms of feed from others.

If I were you I would add 1tbsp of Epsom salts per 1 gallon of feed. Then after that do 1tsp per gallon and keep it there until last 7-10 days of plants life.

I read recently that Sulphur although a micro nutrient and should theoretically yellow from top down. Was actually observed to yellow from the bottom up on plants.

The yellowing of the tips to the fan leaves to the base of the leaf indicate this. Low nitrogen will make the leave yellow more uniformly.

Also a lack of S can cause burnt tips, the difference is, is that the tips will initially yellow before then black/brown and crispy.

Nutrient burn makes the leaf tips turn instantly dead, crispy
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I'll go and grab some today. Really appreciate the help
 
Nutty sKunK

Nutty sKunK

Well-Known Member
Greenthumbgrower1986 said:
Done that yesterday. They are yellowing so quickly now. Do I give the Epsom salts ever water
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They will yellow fast now they are flowering as they just want to flower and be done, they are on a race!

Yes but lower it to 1 tsp per gallon.

In my experience with autos if they throw a wobbly in flower it’s hard to bring them back.

The problems you see now could’ve been building up weeks ago! Essentially you’re chasing your tail. But the added S will help with terpenes/resin :)
 
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