Preling commented1y ago
Hello, with a humidity of only 43%, that's exactly what happens. I've had that too. They don't grow because the roots are still too small. And due to the low humidity, they can't take up water through the leaves either. Put a clear plastic cup or a small clear orchid pot over them until they're about as big as yours at the end (2-3 nodes). Or just leave them longer in your Romberg seedling tray. And check online what humidity the plants need and when. You can catch that with "normal" levels and just wait. But the autos will flower, no matter how small they still are. And temperatures over 30 degrees are too much as well. I find it best to work with a VPD chart (leaves 2 degrees cooler than the air).
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