Do Lower Temperatures Really Change The Color Of Certain Strains?
- Thread starter phyzix
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Brick Top
New Member
When your plants are deficient in phosphorus, this can overall reduce the size of your plants. Not enough causes slow growth and causes the plant to become weak, to little amount of Phosphorus causes slow growths in leaves that may or may not drop off. The edges all around the leaves or half of the leaves can be brownish and work its way inwards a bit causing the part of the leaves to curl up in the air a bit. Fan leaves will show dark greenish/purplish and yellowish tones along with a dullish blue color to them. Sometimes the stems can be red, along with red petioles that can happen when having a Phosphorus deficiency. This isn’t a sure sure sign of you having one though, but can be a sign. Some strains just show the red petioles and stems from its genes.
So pretty much the overall dark green color with a purple, red, or blue tint to the fan leaves is a good sign of a Phosphorus deficiency. Having Cold weather (below 50F/10C) can make phosphorous absorption very troublesome for plants.
Jerry Garcia
Well-Known Member
So are you implying that color change ONLY occurs as a result of phosphorous deficiency, and that coldness causes this deficiency?
doowmd
Well-Known Member
I set out a plant in early spring that became almost completely purple. When the weather started warming up considerably in may it changed back to green and never showed another purple leaf. I left it out until the end of oct., hoping it would change back to purple again, but it never did. So I guess it might've been a combination of temp/age.
phyzix
Well-Known Member
I believe so
raiderdan
Member
There are some strains that turn purp naturally even if it never gets cold(purple ice). Some plants like GDP and grape ape need help to get really dark purple by lowering the temps. Mine get the darkest when I get the night temps to 40-55 degrees(pretty much cold as you can get it) and day temps 70 or so. Keep in mind any strain's leaves will turn purp if it gets cold enough but the bud probably wont. I keep my night temp at about 65 and day temp at 75 to 80(hottest) untill week 5 or 6 into flowering. After 6 weeks of flowering I drop my temps to what I stated above. You don't want to get your temps to cold before week 6 because it can reduce the swelling of your buds and end up with a shitty yield. This really brings out the color of the purp strains along with a good 10 plus day flushing. I have been growing purp strains for almost 10 years. Hope this helps. I have a pic I will try and post later on. It is of Grand daddy purple. One pile of buds is from a room with no AC and the other had AC to control the night temps. The clones were from the same mother plant and the rooms were growing simultaneously. You can really see the difference in the final product, one is purple one is not.
brandon.
Well-Known Member
yes. cold weather hinders phosphorus absorption causing a deficiency, causing the plant to turn purple.
dudemandigo
Well-Known Member
it happend to one of my 2 different outdoor sites last year. One site was 6 plants and they all turned dark purple, with the purple fading in and out of the buds. the other site had about 15 plants and i only remember one or two of them turning purple. both sites were harvested in october so temps were very low, but i cant understand why one site got more purple then the other site, they were less then 100 ft apart.......
satch
Well-Known Member
Is this a troll thread? One of my females I clone gets purple pistols with colder nighttime temps just about every time. You can't really simulate it indoors, gotta let nature do it's thing. The last couple years I've put them in a greenhouse for an extra couple weeks after frost.
Here's a good link for you lads~ http://www.na.fs.fed.us/fhp/pubs/leaves/leaves.shtm
Here's a good link for you lads~ http://www.na.fs.fed.us/fhp/pubs/leaves/leaves.shtm
phyzix
Well-Known Member
That link isn't really relevant to cannabis, which is an annual not perennial.
Jerry Garcia
Well-Known Member
What about strains that are predisposed to turn purple...like grandaddy purps, or querkle...is that a deficiency too?
And when you say it causes a deficiency, how deficient are we talking? Because it doesn't seem to hinder bud/resin production.
And when you say it causes a deficiency, how deficient are we talking? Because it doesn't seem to hinder bud/resin production.
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