I Think My Plant is Dying!

[angelicious]

My girl (Nirvana Short Rider AF) seems to be in trouble here and I don't know what's causing the problem. As you can see from the pics, a number of her leaves have started to wither and it looks like she's dying. This started about 2 days ago. Initially I thought it could be heat stress so I raised the light to a foot above the plant, but other leaves have since started to die.

She's 47 days from seed, approx 20 days into flowering and I have her under a 125w dual spec CFL on 12/12 lights. Soil is MG multipurpose compost, nutes 1/2 flowertab, watered every second day. Can anyone help?

 

[TichySmokeSmoke]

I would say just a little rootbound. transplant prob fix that, I dont see any Deff

 

[heathaa]

check your other identical thread. i gave you an answer. yes smokesmoke is right they are probably rootbound or close to it. transplant them and follow the advice i gave you on your other thread

 

[angelicious]

Thanks for the advice - I'll get a larger pot tomorrow and transplant.

 

[TichySmokeSmoke]

Please wait for the pot you have already to dry....don't the extra stress

 

[maps84]

No man.. that looks like a potassium def where older leaves turn yellow then start getting dark, scorched lesions around the edges of the leaves. Plants may stretch and stems are weak. Potassium isn't absorbed properly when there is too much calcium or nitrogen in the medium. Check your pH and flush your whole system with half strength nutrients and see if your plant starts showing signs of improvement.

 

[jgrows4u]

does the mg soil u have does it have nutrients already in it?

 

[TichySmokeSmoke]

No man.. that looks like a potassium def where older leaves turn yellow then start getting dark, scorched lesions around the edges of the leaves. Plants may stretch and stems are weak. Potassium isn't absorbed properly when there is too much calcium or nitrogen in the medium. Check your pH and flush your whole system with half strength nutrients and see if your plant starts showing signs of improvement.

if its a deff of pots., wouldnt he need potassium not just a flush?

 

[maps84]

if its a deff of pots., wouldnt he need potassium not just a flush?

Potassium isn't absorbed properly when there is too much calcium or nitrogen in the medium. Thus the flush

 

[Kingrow1]

you said you moved the light up a foot but makes no difference if the grow room is still too hot! What are the temps at the tips of the plant?

 

[angelicious]

you said you moved the light up a foot but makes no difference if the grow room is still too hot! What are the temps at the tips of the plant?

Depending on outside temps, the inside temps flucuate between 22 and 30 degrees. Normally it's about 25.

 

[Kingrow1]

30 degrees celcius is too hot for most strains, yes i can grow at 30c but slowly and any damage will be quick and harsh. Can you ventilate the room a bit better? This may not be the whole problem but you got to eleminate possibilities. My flowering room door is propped open to allow heat to escape faster and i have a small fan pointing from the back of the grow room directly at the opening to push heat from the lights out.

Having said that i run a 125 cfl and they don't get too hot but if i didn't have adequate ventilation i could see how it allone could cause heat problems. Yes 30c is too hot, and yes you initially thought that it was heat stress and it dose look like that a bit. As i said heat problems are not always solved from simply raising a light but by proper ventilation of the grow room. Good luck.