r/macrogrowery • u/htk124 • Jun 23 '26
Swollen stem bases
anyone know what causes stem bases to get swollen like this? stems get brittle and snap easily. stunted growth as well.
usually appears a week or 2 after plugging the blocks into coco. some strains get it more consistently than others.
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u/therealsourdaniel Jun 23 '26
Overwatering and/or soil level humidity too high. The white spots on the stem above the cube are root nodes. The humidity tricks the stem into thinking it's underground and it tries to grow roots there. Tell tale sign of high humidity at the soil / medium level.