Need help with my autoflower please!

[budrow]

Hi, I have been growing an autoflower (blackberry kush by Dutch passion) in a 2x2 with a viparspectra p1000 light. I have been in flower for a little over a month. I'm noticing a bunch of the leaves are turning brown/yellow and are dying. I have been watering only when the topsoil is dry about a half inch down with tap water with a PH of 6.5 and have been using superthrive bloom 3-12-6 nutrients and adding 10ml of Foxfarm tiger bloom with the superthrive every other watering. The plant is also in a 5 gallon fabric pot. I just don't know if I'm adding too many nutrients or what? Just don't know what could be causing the leaves to do this, Thank you!

 

[ArtfulCodger]

Leaves will tend to fade toward the end of the plant's life, but there's evidence of over-feeding (clawing, tip burn progressing down the leaf edges) and over-watering (leaf thickness and texture). Tough to say much more without knowing what media you're running, but the "finger in the topsoil" test isn't a great way to time waterings. Pot weight is much better.

 

[LoveGrowingIt]

I'm thinking the same as @ArtfulCodger on all counts.

I use several methods, including the finger in the soil method. If a finger in the soil is your best option, then I suggest going a little deeper--about 1 to 2 inches. Also, avoid watering close to the stem at that plant's age.

 

[LoveGrowingIt]

So... What to do? I suggest letting the plant use the excess nutrients. To do so, stop feeding for a week or two and use plain water. I also don't think you need both of the products you're using. I'm not familiar with Superthrive Bloom 3-12-6, but those proportions would be okay for flowering.

Those leaves won't recover and may get worse. They can be cut off if they're dead. I would leave them on if they're still mostly green so they can help the plant.

 

[budrow]

Leaves will tend to fade toward the end of the plant's life, but there's evidence of over-feeding (clawing, tip burn progressing down the leaf edges) and over-watering (leaf thickness and texture). Tough to say much more without knowing what media you're running, but the "finger in the topsoil" test isn't a great way to time waterings. Pot weight is much better.

Thanks! I'm using foxfarm ocean forest soil.

 

[ArtfulCodger]

Thanks! I'm using foxfarm ocean forest soil.

How often have you been watering?

 

[budrow]

How often have you been watering?

Usually every 2-3 days

 

[ArtfulCodger]

Usually every 2-3 days

When I've run Ocean Forest, I've had good results watering slowly to about 10% runoff, and then drying back until the pots are very light. How long that will take depends on the relationship between the plant size and the pot size. I suspect you've been watering too frequently. If you want to know for sure, you could let the plant dry back until you see straight-down droop in the lowers. Water immediately when you see that. The next watering should come 1-2 days sooner than your "test" dryback.

 

[budrow]

When I've run Ocean Forest, I've had good results watering slowly to about 10% runoff, and then drying back until the pots are very light. How long that will take depends on the relationship between the plant size and the pot size. I suspect you've been watering too frequently. If you want to know for sure, you could let the plant dry back until you see straight-down droop in the lowers. Water immediately when you see that. The next watering should come 1-2 days sooner than your "test" dryback.

Okay I will try that and get back with you. Thanks a lot for the help!