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Strange Cutting Problem swollen stems
Hi all, i have a problem with my cuttings (clones), ive been rooting cuttings fine for many years in rockwool cubes and usually get 90 to 100% stick rate but recently something strange has been happening. The cuttings root and roots start growing but the rest of plant grows very very slowly, stunted, and the stems become swollen after they root. The swollen area of stem is sometimes upto 5cm up from cube, i just havent a clue what is causing the stem to become swollen which is obviously preventing the rest of plant from taking up nutrients. I have not changed my environment or my cutting technique and thus cannot work this out , any help would be much appreicated,
thanks,
char1ce
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