Help. Plant leaf problems


The plant is losing leaves from the bottom going up. See attached pictures. It’s a White Widow, grown outside in tropical conditions. Soil is 2 parts Vermiculite, 2 parts perlite, 3 parts top soil, 3 parts potting soil, 1/2 part bone meal, 2 parts steer manure, and 1 small handful of lime. Although it looks like the nitrogen deficiency issues I’ve seen on the forum, the soil used seems rich enough. It also looked like fungus pictures with a very humid environment, so I let soil dry out and sprinkled diamataceous earth on top but problem persists. Any suggestions, theories? Thanks.



That is nutrient burn most likely caused by the steer manure.
Not really sure what to do at this point seeing how they are out side.

How old is your plant ?

Is she in flower yet

It definitely isn’t fungus



Hi Will,

Thank you for the response. The plant is about 5 weeks old and I was doing sunlight plus an additional 4 hours under fluorescent. Sunlight (12 hrs.) only for the last two weeks but it has not started flowering yet. It is a first attempt and was using the soil mixture I use for tomatoes with success. Not a problem restarting. Would you be able to suggest a simple soil mixture that’s better suited? I also have your Organic Nutrient Starter package if I can incorporate this.

Thank you,



My plants are 2 weeks I think they have Rust, but not sure any help ? thanks


Why don’t you fill this out and we’ll see if we can’t figure out what’s going on. Try to be as complete as possible.

COPY/PASTE: This “Support Ticket” into your forum post.
Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so = NA

Strain; Type, Bag seed, or NA

Soil in pots, Hydroponic, or Coco?

System type?

PH of runoff or solution in reservoir?

What is strength of nutrient mix? EC, or TDS

Indoor or Outdoor

Light system, size?
Temps; Day, Night

Humidity; Day, Night
Ventilation system; Yes, No, Size
AC, Humidifier, De-humidifier,

Co2; Yes, No
Add anything else you feel would help us give you a most informed answer. Feel free to elaborate, but short, to the point questions and facts will help us help you smile


Strain; AK-47
Soil in pots, 5 gal bag

Hydroponic, or Coco? na

System type? don’t know what this is

PH check with meter is in green

What is strength of nutrient mix? don’t know

Indoor or Outdoor… indoor

Light system, size? 2x 300 watt LED

Temps; Day, around 73 to 75 Night 63 to 68

Humidity; Day, Night 55 to 65

Ventilation system; Yes, fan with fresh air

AC, Humidifier, De-humidifier, none

Co2; No


Can you tell me what soil you are using, what nutes and when, and I assume you don’t have a digital meter? What is your watering method?

Have you made any changes recently?


sta-green potting mix with fertilizer.
I only have a ph, and moister, and light meter
I put merical grow on it last friday, in the water 1 small side of scoop with 1 gal of water.


Nutrient burn.

No more fertilizer! You have your plants in amended soil which already has fertilizer in it.

Generally cannabis growers shy away from soils with “timed release” or normal Miracle Grow as it is very harsh on the plants and later on your lungs.

Are these photo period or auto flower? If photos I would suggest transplanting into a better suited medium like an organic potting soil. Using that, your plants won’t need anything but properly ph’d water until they’re 6 weeks old. If they’re autos it would be best to leave them be.

I would strongly recommend that you buy a digital ph meter along with 7.0 ph standard reference solution and ph up and down. An inexpensive meter with all of that will set you back around $25 and may be the most important tool you have.

Ph 6.5 in soil is fairly critical to a successful grow and is difficult to get without using a decent meter.

Let me know if these are autos or photos, @blueriver. We’ll get you figured out.


they are not auto flower.

organic potting soil ?

I will get one of those meters.


If you are in the States, any of the big box stores carry potting soil with only things like bat guano and worm castings etc. One popular line is Fox Farms, Home Depot has one called Black Magic and many others.

Amazon sells a Jellas ph meter for around $11, General Hydroponics sells the ph up and down and the reference solution. All available on Amazon.


Thank’s I will do that.


You can get my attention any time and any of us is happy to help out. The only condition is you have to share some bud porn with everyone haha!