Is my plant doomed?

Arsenicum

Arsenicum

New Member
This is my 6 week old NL auto I've been growing. Everything up until a few days ago has been going great, last few weeks my plant has been growing like crazy, but Tuesday morning I noticed some bronze colored spots appear on the middle and some of the upper leaves basically overnight. The plant was also looking a little off color. I have an inkling this is a phosphorus and or calcium deficiency. I gave the plant some worm casting based fertilizer and a calcium foliar spray. The affected areas got worse, newer growth and growth at the very bottom look better, greener.

I'm embarrassed to say that I haven't been feeding the plant very actively up until now. My growing mixture had some pretty rich soil mixed in to it and I thought that that might be enough for a while... my mistake. I made a post here like a week ago with the same plant, it was looking a lot better then.

Hope to hear something from someone more experienced. I hope the prognosis isn't too grim.
 

Attachments

Marq1340

Marq1340

Well-Known Member
Arsenicum said:
This is my 6 week old NL auto I've been growing. Everything up until a few days ago has been going great, last few weeks my plant has been growing like crazy, but Tuesday morning I noticed some bronze colored spots appear on the middle and some of the upper leaves basically overnight. The plant was also looking a little off color. I have an inkling this is a phosphorus and or calcium deficiency. I gave the plant some worm casting based fertilizer and a calcium foliar spray. The affected areas got worse, newer growth and growth at the very bottom look better, greener.

I'm embarrassed to say that I haven't been feeding the plant very actively up until now. My growing mixture had some pretty rich soil mixed in to it and I thought that that might be enough for a while... my mistake. I made a post here like a week ago with the same plant, it was looking a lot better then.

Hope to hear something from someone more experienced. I hope the prognosis isn't too grim.
Click to expand...
You're being a little melodramatic with "doomed"

Give these guys more information on your grow.

Plant type, age, grow medium, watering method, feeding method.

My opinion is they've either been underwatered or over-watered with possibly other problems.
 
tstick

tstick

Well-Known Member
I'm willing to bet it's a pH issue and not a nutrient issue. My guess is that your pH is very low.

My advice is to get a pH test kit and do both a runoff and a slurry test. You could get a pH pen, too, but a decent one is expensive. I know I get criticism for recommending a runoff test, but it saved my grow...General Hydroponics is the one I use. If indeed it IS a pH issue, then you will have to leach the pots with pH-adjusted water until you get a runoff that's in a better range. It could take a couple weeks before your plants will bounce back. Once the pH is back on-track, then you will have to be sure and adjust your pH on everything you give it from there on out.
 
Arsenicum

Arsenicum

New Member
Marq1340 said:
You're being a little melodramatic with "doomed"

Give these guys more information on your grow.

Plant type, age, grow medium, watering method, feeding method.

My opinion is they've either been underwatered or over-watered with possibly other problems.
Click to expand...
it looks scary.
as for more information:

Plant type - Northern Lights autoflower that i got from RQS
Age - sprouted exactly 6 weeks ago
Grow medium - about 75% peat moss with the rest being potting soil.
watering method - I water them about 2 times a week, letting the soil dry out before each watering.
feeding - vermicompost for tomato and peppers like once a week from now on
 
warble

warble

Well-Known Member
I would say the nutes your soil have might be done. Some worm castings could help. Since you're going into flower, you might need to up the P and K they are getting fed.
 
G

Greenman68

Member
from the collage of leaf coloring, it's probably a ph issue rather than individual nutrients, esp considering you just added ferts. you can top dress with fast acting dolomite lime to get it back in order.
 
You must log in or register to reply here.
Top