Help please

NeverEnough

420 Member
I'm new to growing, my plant leaves on the bottom are turning from a light green to yellow, can anyone help me figure out how to correct this?
 
Yes we can. Welcome to 420.

You need to provide some info. A picture will help a lot.

About your grow:

Inside or outside?

What are you growing in?

What size/type of pot?

How do you water?

What nutrients are you giving?

A picture..

:nomo:
 
1-3 plants
Inside
Small tent 2x2x4
Right now ,2 gallon pot
Water once a week /bottle spring water
Miracle Grow ,organic mix
Temperatures 75 -80 °
Humidity 40%-55%
 
Picture
 

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Yes we can. Welcome to 420.

You need to provide some info. A picture will help a lot.

About your grow:

Inside or outside?

What are you growing in?

What size/type of pot?

How do you water?

What nutrients are you giving?

A picture..

:nomo:
1-3 plants
Inside
2x2x4 tent
Right now, gallon pot
Water once a week, spring water
Miracle grow, performance organic soil
Temp 75 to 80 degrees
Humidity 40%-55%
 

Attachments

  • 20191128_105832.jpg
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@NeverEnough, the best way to show the plant in a photo is to take it out of the tent and use the normal room lights and the camera flash. Or, leave it in the tent and turn off the grow light and use the flash and any room light that gets into the tent.

The camera sees the light differently than our eyes do. While we can see that there is something on those lower leaves the colors that we see are what the camera produces. When we are looking at the plant with our eyes our brain can adjust for the light. Our brain cannot compensate for the grow lights after the photo is taken in purple-blue lights.
 
looks like soil compaction or soil too wet or too much fertilizer.

Up pot to some fresh different soil - say go to your local plant nursery and see if they have potting soil they make for sale. Use that.

Miracle grow - its a miracle anything grows in that stuff.

Then the company that makes that stuff is Monsanto. <spit> Get ready for the Roundup.
 
@NeverEnough, the best way to show the plant in a photo is to take it out of the tent and use the normal room lights and the camera flash. Or, leave it in the tent and turn off the grow light and use the flash and any room light that gets into the tent.

The camera sees the light differently than our eyes do. While we can see that there is something on those lower leaves the colors that we see are what the camera produces. When we are looking at the plant with our eyes our brain can adjust for the light. Our brain cannot compensate for the grow lights after the photo is taken in purple-blue lights.
 

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Hi. You’ve most likely got a couple of issues going on at the same time. There is lots of info about growing on this site as well as journals of people actually growing.

I used miracle grow for my first grow and they finished. I didn’t use that stuff, but something similiar. It should have instructions on it that tell you what nutrients it is releasing and when. If it’s really organic you shouldn’t need to add anything, but I don’t imagine that it is. Weed in a normal soil grow needs additional stuff during veg and flower. Most people new to growing indoor choose a neutral type of soil that they add the nutrients during watering. It’s much easier to control what is going on with the plants development. You’ve got time released nutrients in your soil, which means you really don’t know what is happening or when. If it were me, I’d repot into a different soil and add the nutrients during watering. You don’t have to do that. I didn’t on my first grow. You will need to get some supplements in any case.

One of the more common mistakes is not adjusting the PH of your water to the range that your roots need to absorb the nutrients. Yours is going to be 6.3. I’ts probably over 7. You need to buy a PH pen and some PH Up/Down.

How old are the plants (when did they stick their heads above ground). What type of light are you using and what strength? Do you have a fan to circulate air in the tent? It’s important that you circulate air under your leaves. It’s how they get energy.

Watering once a week in gallon pots doesn’t sound like very much water, but they do look ok. Weed likes the soil to dry out between watering. It encourages the roots. Read this - Watering

Skim through a few of the complete journals. Find someone similar to yourself and you will likely see something similar to what you are going through. You will get a much better understanding of what you are doing. Grow Journals

I’d repot your plants into 5 gallon fabric pots the next time they need water. Focus your watering on the soil away from the center of the plant to encourage the roots to grow out, and make sure you are watering at the correct PH range.

:cheer::cheer::reading420magazine::bong:
 
I am going to stick my thoughts in here.

Your soil is probably good enough for most houseplants, even those that flower. But I consider Marijuana to be what some growers call a "heavy feeder" meaning that it needs more nutrients throughout its life cycle than the average plant. The reason they are heavy feeders is because in one growing season they can go from seed to a full size of 8 to 12 feet tall and 4-6 feet across. That requires a lot of nitrogen and then when they start to flower they require a lot of Phosphorus and a fair amount of Potassium.

There might be enough nutrients in the soil mix you selected but the problem could be that it is being used by the plant faster than the soil can supply it. You will have to supplement some of what the plant needs as it needs it to avoid the yellowing or browning of leaves.

@Calvados pretty much covers all the basics and I agree with it all except for the "getting energy" from the air moving under the leaves. The air movement is necessary for building stronger stems but the energy comes from sugars that come from photosynthesis.

Others might not agree but if it was my plant right now I would stop watering for awhile. From the way the soil looks it probably is a high peat moss base. Peat moss is great for absorbing water. With a plant that size and with the limited amount of leaf and stem structure you might be able to go up to a week between watering sessions. Later when the plant has more leaves and is larger it will need more frequent watering but not now. While I am waiting for the soil to dry out a bit I would be watching the yellow leaves and looking at the newer leaves just to get an idea of how fast the problem progresses.

Continuing to pretend that it is now my plant I would be preparing to give it a dose of a natural or organic source of nitrogen; a mild solution of fish protein with a nitrogen percentage of about 4 or 5. If all goes well the leaves would stop turning yellow and the new leaves that grow out would be a bit darker green. If the problem continues then I would try something else.

Several members here will remind new growers that sometimes it is better to go slower with any changes so that we will know what causes the change. In other words, if you follow everyone's suggestions and the problem goes away you will not know what actually worked if the problem ever comes up again. Take some basic notes starting with the last time you watered and add a note with the date each time you water for starters. If you add nutrients to the water or to the soil by top dressing or mixing into the surface make a note with the date.

I do not make notes when I water but I am firm about my note taking when I mix in any nutrients to the water or soil. It is very easy to forget when I added something after a week or so. When we are growing inside we are growing in an artificial environment and we are in charge. Take the notes.

Enjoy the day.
 
Keeping a journal is super important. It has a lot of uses. There is a standard format recommended on here that you will see in the on-line journals. Keeping your journal on here has a couple of benefits. It’s a lot easier to get the right help, because people can read what you are doing. If it’s not legal where you are, you don’t have the prosecutions case complete with photos laying out next to your weed.

I keep a spreadsheet for nutes and watering and a journal in word with pics and dates for significant things like topping, switching to flower etc. The other good thing is that you can go back and see exactly how you dealt with a problem that you’ve had in the past. If you don’t keep one or don’t update the one you have, you will forget things and end up doubling up or leaving something out.
 
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