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jimmy_jimmy · #1 (**permalink**) 01-22-2005, 08:34 AM

It is really cold around here right now. Has been for about a week and I'm sure it won't last long. I've got my plants in an unheated back room in my house. I time the light cycles such that the lights are on during the coldest parts of the day. But it still gets really cold back there. Yesterday it got down to within a couple degrees of freezing.

Does anyone know what cold temp damage looks like on a plant? My upper leaves are discoloured in a way that suggested to me that the plant is P-deficient. The leaves gradually developed a reddish colour and have become more brown since. I have been hitting my plants on a weekly basis with a high-P fertilizer (10-52-10) and it has done nothing for this problem. This is why I think it may be cold temp damage.

I am growing Haze, a tropical sativa. Perhaps this stuff is very sensetive to cold?

Today is day number 56 of flowering. Still a couple weeks early according to the time frame that the seed bank gave me. I think I might chop one of my plants today just in case I am killing them.

unoit · #2 (**permalink**) 01-22-2005, 05:17 PM

HIGH All, do you know what your PH is at? If your PH is O.F.F.F it will lock out nutes and give your plant the lack of P look.

jimmy_jimmy · #3 (**permalink**) 01-22-2005, 09:33 PM

ph is 7 - 7.5 all around.

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#1 (permalink) 01-22-2005, 08:34 AM
jimmy_jimmy Registered User Join Date: Nov 2004 Location: Maine, USA Posts: 37	cold weather and tropical strains It is really cold around here right now. Has been for about a week and I'm sure it won't last long. I've got my plants in an unheated back room in my house. I time the light cycles such that the lights are on during the coldest parts of the day. But it still gets really cold back there. Yesterday it got down to within a couple degrees of freezing. Does anyone know what cold temp damage looks like on a plant? My upper leaves are discoloured in a way that suggested to me that the plant is P-deficient. The leaves gradually developed a reddish colour and have become more brown since. I have been hitting my plants on a weekly basis with a high-P fertilizer (10-52-10) and it has done nothing for this problem. This is why I think it may be cold temp damage. I am growing Haze, a tropical sativa. Perhaps this stuff is very sensetive to cold? Today is day number 56 of flowering. Still a couple weeks early according to the time frame that the seed bank gave me. I think I might chop one of my plants today just in case I am killing them.

#2 (permalink) 01-22-2005, 05:17 PM
unoit Fresh Air Inspector Join Date: Jan 2001 Location: The WET Coast CANADA Posts: 5,225	HIGH All, do you know what your PH is at? If your PH is O.F.F.F it will lock out nutes and give your plant the lack of P look. __________________ Need some good reading..check out the links. Links, Guides, and Troubleshooting Great Info Marijuana Grower'sHandbook One of the best guides Marijuana Bible Old Farmer's Almanac

#3 (permalink) 01-22-2005, 09:33 PM
jimmy_jimmy Registered User Join Date: Nov 2004 Location: Maine, USA Posts: 37	ph is 7 - 7.5 all around.

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