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Registered: 04/20/08
Posts: 114
Loc: Canada
Last seen: 11 years, 2 months
Purple stems
    #77134 - 07/09/08 10:07 PM (13 years, 4 months ago)

Have some clones to determine sex, (they are in flowering) and some of the stems that attach the leaves to the stem is turning purple. is this a deficiency?

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Registered: 04/29/08
Posts: 1,011
Loc: G-Spot TX
Last seen: 4 years, 5 months
Re: Purple stems [Re: Chronica]
    #78093 - 07/10/08 01:43 PM (13 years, 4 months ago)

Most of the time redish purple stems are not a cause for too much concern but the plants need to be watched for any other signs that could match up to a deficiency.  Purple discoloring of the main stems, leaf stems, and the veins of the undersides of the leafs could be caused by a few things and could also just be normal genetics. Most of the time I have found it to be cause by dark period temps to be dropping down too low (more than 15 degrees F).  A phosphorus (P) deficiency can also be the cause if the leaves are starting to turn dark with a bluish green tint.  If interveinal yellowing is starting to occur along with the purpling stems then it could be either a Nitrogen (N) or Sulfer (S) deficiency. If the above is not occuring everything is fine.

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