The Unclean
New Member
Hi all, I'm a first-time grower who's having a little difficulty with my plants. Specifically, they're showing leaf yellowing/death starting from the tips, but it doesn't seem to be a nitrogen deficiency because the very bottom leaves are untouched. I'd appreciate it if you could help diagnose these girls!
Required information:
-Royal Flush (Sativa-dominant)
-10 plants, of which only three or so are showing serious symptoms
-Early vegetative stage, started from seed four weeks ago
-Indoor, organic soil (Happy Frog) in a one-gallon pot
-500-watt LED lighting
-CO2 supplied via tank with a time-release valve
-80-degree temperature, 45% humidity, pH 6.8
-No pests detected
-Watering every three days or so
-Fertilizer info below
I've attached photos of three plants - the first is one of the largely untouched plants, the second is moderately affected, and the third is by far the worst (and may well be on the brink of death). You'll notice a significant difference in size and number of leaves.
Mostly healthy:
Problematic:
Dying:
At first I suspected this was just a nitrogen deficiency, but I've been adding half-strength doses of 20-20-20 and some kelp extract (root and foliar) since about two weeks from sprouting. I gave the affected plants a nitrogen supplement four days ago, but there's been zero improvement - if anything, the yellowing and necrosis have spread. Any idea what's wrong with my garden?
Required information:
-Royal Flush (Sativa-dominant)
-10 plants, of which only three or so are showing serious symptoms
-Early vegetative stage, started from seed four weeks ago
-Indoor, organic soil (Happy Frog) in a one-gallon pot
-500-watt LED lighting
-CO2 supplied via tank with a time-release valve
-80-degree temperature, 45% humidity, pH 6.8
-No pests detected
-Watering every three days or so
-Fertilizer info below
I've attached photos of three plants - the first is one of the largely untouched plants, the second is moderately affected, and the third is by far the worst (and may well be on the brink of death). You'll notice a significant difference in size and number of leaves.
Mostly healthy:
Problematic:
Dying:
At first I suspected this was just a nitrogen deficiency, but I've been adding half-strength doses of 20-20-20 and some kelp extract (root and foliar) since about two weeks from sprouting. I gave the affected plants a nitrogen supplement four days ago, but there's been zero improvement - if anything, the yellowing and necrosis have spread. Any idea what's wrong with my garden?