Hello everyone,
I just wanted to get your input on this question of mine.
How do you bring forth the purple qualities of the purp strains?
I am currently growing Purple Kush and Granddaddy Purp. They’re both in their first week of flowering.
I’ve been gradually exposing them to cooler temperatures during their lights out period. They chill in about 58-60F for 8-10 hours at lights off then 52-56F for 5 hours directly before lights on. During lights on the temps are usually 68-72F. They spend about half the day chilly. I understand you are supposed to expose them to cold in early flower to activate their purple hue gene.
Is there anything else i should be doing or aware of?
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Simple, drop your night temps about 15 degrees cooler than your daytime temps.
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Another way to get colors is to raise the PH extremely high.
Cooler temperatures do work most of the time, but some just don’t turn colors.
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Just thinking out loud. At what point does low temps affect growth rate and quality?
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Don’t know the exact scientific temp, but I try to keep mine above 60 degrees indoors at all times. I know about 82 degrees and up seems to slow growth.
I drop all my temps 10 degrees at night to 67 and my day is 77. Ten is all it takes to purple up super skunk, Bruce Banner, Grandaddy Purp as I’ve grown all those.
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Below temperatures of 62° you start to slow growth of plant, at 86° You also start to slow growth. These temperature values are only relevant if the humidity level is at optimum plus or +/- 2 percent.
If humidity is not at optimum, you can get good growth at or below your 62 mark and at or above your 86 mark. But you may also slow growth.
Other factors are strain tolerances and moisture values in soil and soil temperature. Optimum soil temperature is 72° +/- 2
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I’ve let some cold air hit my GSC Extreme auto and honestly i didn’t do it that long. I opened the windows and put a fan in the window, opened the tent up and watched the temp drop about 16 degrees. I closed the window soon as it went down to 56 degrees in the tent. It took about 30 mins. And the tent was back up to 72 degreed in no time once I shut the window. I did this about 6 or 7 times since it started flowering.
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@LearnasUgrow @2GreenThumbs @Covertgrower
so by dropping temps 10-15 degrees lower than tent temps you’ll ensure purple? how often should i be exposing them to cold air during the lights out period ?
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? I have an inkbyrd thermostat so I set my daytime temp to 77 and I believe my nighttime is 66. It’s winter so it’s not an issue dropping temps here.
Outdoors they do it naturally
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Can’t guarantee that, it has to be in the genetics to turn colors…
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I’ve made Superskunk, Gorilla Glue, Bruce Banner, Blue Dream and some White Widows turn purp indoors but @Covertgrower is correct, it has to be in the genetics.
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Welcome ! From my experience growing granddaddy purple it two Separate Winter and summer grows. plants showed color both times under normal Growing conditions. Probably more Genetics in my situation. Good luck
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I’m with @Covertgrower on this, dropping temps doesn’t guarantee it. You can also try stressing the plant, also not a guarantee to get the purple genetics you’re looking for but sometimes works. I would just go with what you get out of it for color and enjoy the smoke. Purple doesn’t add flavors, it just looks nice.
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I’ve had one GDP auto run purple look and one same exact conditions and it seemed to stay green. Had a different taste smell and look. Just all depends on what the genetics wanna do and who the lean more towards mama or dad
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