Community Forum — Page 15
Threads 281–300 of 376, newest first.
Nutrient burn or deficiency? Can't tell the difference
Seeing brown spots AND yellow tips at the same time. Some leaves have burnt tips (nutrient burn?) but others are yellowing from the bottom (deficiency?). How can both happen at…
Slow growth after transplant — been 5 days with no change
Transplanted from solo cup to 3 gallon pot 5 days ago. Plant hasn't grown at all since. Leaves look OK but zero new growth. Did I damage the roots?
Leaves clawing downward — nitrogen toxicity?
My fan leaves are curling downward like eagle claws. The leaves are also very dark green, almost black-green. Currently feeding full strength General Hydroponics Flora series. Is…
Organic vs synthetic nutrients — honest comparison
Organic: slower release, builds soil biology, better terpenes (many claim), harder to burn plants, more forgiving of mistakes. Synthetic: faster uptake, more precise dosing,…
The importance of dark periods — do plants need sleep?
Yes! During dark periods, cannabis processes the sugars created during photosynthesis. This is when significant growth happens at the cellular level. 18/6 is preferred over 24/0…
Cannabis companion planting — which plants help your grow?
Basil repels aphids and improves flavor (unproven but popular theory). Marigolds repel pests. Clover fixes nitrogen in soil. Chamomile prevents fungal disease. Lavender attracts…
How to build a mother plant room
Keep mother plants in veg permanently under 18/6 light. Use a separate space from your flower room. Feed lightly — you want healthy growth, not explosive size. Take clones every…
Week by week flower guide — what to expect each week
Week 1-2: stretch, pistils appear. Week 3-4: bud sites forming, flowers stacking. Week 5-6: buds fattening, trichomes developing. Week 7-8: buds dense, trichomes cloudy, pistils…
Pre-flower stretch — how to manage height explosion
The stretch happens in the first 2-3 weeks of flower. Most strains double in height, some sativas triple. Management: supercrop tall branches, raise lights, use LST to bend tops…
Switching from soil to coco coir — what changes?
Coco is hydro, not soil. Key differences: water more frequently (1-2x daily when mature), always add CalMag, pH to 5.5-6.2 (not 6.0-6.8), feed every watering (no plain water…
Understanding runoff — what your plant is telling you
Runoff is the water that drains from the bottom of your pot after watering. Test the pH and EC/PPM of runoff. If pH drops significantly (input 6.5, runoff 5.2), there's salt…
Transplanting cannabis — when and how without shock
Transplant when roots reach the edges of the current pot (visible through drain holes or pot-bound). Water 1-2 days before transplant so soil holds together. Dig hole in new pot,…
How to increase THC potency in your grow
Genetics determine the ceiling — you can't make a 15% strain test at 30%. But you can maximize potential: proper light intensity (more photons = more trichomes), correct harvest…
Cannabis grow stages explained — seed to harvest timeline
Germination: 1-7 days. Seedling: 1-3 weeks. Vegetative: 3-8+ weeks (you control this). Pre-flower transition: 1-2 weeks. Flowering: 7-11 weeks (strain dependent). Harvest window:…
Supercropping technique — controlled stress for bigger buds
Supercropping is bending branches until the inner fibers break (without snapping the skin). The plant repairs with a stronger "knuckle" joint. Benefits: controls height,…
Watering schedule for cannabis in soil — the definitive guide
There's no fixed schedule. It depends on pot size, plant size, temp, humidity. Use the "lift test" — water when the pot feels light. In a 5-gallon fabric pot, a mature plant…
How to take clones — keep your best genetics forever
Take cuttings from a healthy mother plant in veg. Cut 4-6 inch branch at 45° angle below a node. Remove lower leaves. Dip in rooting gel/powder. Place in rockwool cube or moist…
Understanding NPK ratios for cannabis
N (Nitrogen) = vegetative growth, big green leaves. P (Phosphorus) = root development, flowering. K (Potassium) = overall health, disease resistance. Veg ratio: 3-1-2 (high N)…
Mainlining / manifold technique for maximum yield
Mainlining creates a symmetrical plant with 8-16 equal main colas. Top at node 3, remove everything below. Let 2 branches grow, top each again. Repeat. Result: perfectly even…
Defoliation guide — when and how much to remove
Light defoliation during veg (tucking first, removing only what blocks light to lower branches). Heavy defoliation ("lollipop") in early flower — remove lower branches that won't…