First time grower, leaves are tanking, turning yellow fast

McDouble

McDouble

Member
Hey guys, I'm a first time grower and I think my plants are doomed. I've searched and read hours of topics about yellow leaves before I ask this question. It's happening fast so I figured I post a few pics and hopefully get an opinion or idea of what is going wrong.

2 out of 4 plants are starting to go yellow. I grow outdoors in soil, pro mix, happy frog, fox farm, perlite, and sensizym root cleaner when I water(I water when it starts to get dry, the finger test)

The 2 plants had spider mites, aphids and ants, so I used End All Insecticide/miticide on them. It work great. 5 days later the 2 plants start showing hairs/flowering and the bottom and some middle leaves start turning. I don't think it would take 5 days for the spray to kill it, so I'm a bit confused. Also those 2 plants are a different strain from the other 2 plants which haven't even begun flowering yet. They have also just been flowering for a week.

So, is this a nutrient deficiency in the early stages of flowering? Did my soil run out of nutes? Should I introduce some food? And I used the insecticide at night and sparingly. I should mention we've had thunderstorms and got a decent amount of rain and the humidity that comes with it, so I hope it's not root rot. The white powder is food grade Diatomaceous earth in the pics. Any opinions welcome, sorry for the novel.
 

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Merlin1147

Merlin1147

Well-Known Member
Probably needs some nutes. They look good though Probably they are just mobilizing Nutrients to the growing tips. Did they finish stretching yet? How long have they been in the pots? No nutes added at all? The initial fert charge in soils only lasts through veg at best depending on how long they veg. Heavy rain probably gave them a good flushing and strips nutes from the soil. If they are done with stretch time for bloom nutes.
 
Dog Star

Dog Star

Well-Known Member
Merlin have right,no much to worry...

if some leaf become yellow on bottom of plant its no any drama.. plant creates new leafes and if she miss
some N she will start to use those leafes that are in shade like shes food...

So these signs are slight N def. but still they are minor..
 
CanadianJim

CanadianJim

Well-Known Member
If those leaves are shaded by the upper growth the plant can cannibalize them, remove any mobile nutrients and let them die. If they come right off when you gently pull on them that's what the plant did. Either because of a nute deficiency, or because of lack of light. Either way a dose of calmag probably wouldn't hurt, has a little nitrogen in case it's low, has magnesium, and has all those micronutrients we often don't think about till there's a problem.
How long have they been in that soil?
 
K

Kythunder

Member
I remember back when i first started,was always afraid i would burn plants,and i would get that fast yellowing,simply just needed more nutes,and i would rather see a very slight nute burn than a deficiency in my opinion,as long as you don't do it during flower. I have never in my life used cal/mag but i use tap water,and sometimes hit it with a little epsom.
 
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