Hey, everyone! I’m a first time grower, so this is in some ways a single-plant trial run. Having said that, I still am hoping to have a good yield/product when she finally flowers.
I was going to try growing outdoors, but my balcony doesn’t get enough sunlight. So I bought a grow light, moved my seedling indoors, and she has been doing great ever since, except for this leaf discoloration that persists no matter what I’ve tried so far.
It started as yellowing of the tips of the bottom leaves, which spreads inward towards the stem. Brown spotting then appears at the tips and also slowly spreads in. Ultimately some of the bottom leaves dry up and fall off, but more often they just turn yellow and linger as these sickly looking leaves (poor girl… haha). It seemed like it was limited to the bottom leaves at first, and new growth was nice and green and healthy-appearing, but it seems like it’s still creeping upwards, despite me only watering and not adding more nutrients for probably 1.5 months now.
Based on my research, this sounded like classic nute burn. I then read that often the nute product labels are overly generous with their instructions, and many people recommend halving what the nute label says. I had mixed in 1.5-2tbsp per month essentially, but I halved that for when I transplanted her to a bigger pot and for subsequent dosages. I water her with 10-16 oz of purified water (or more recently tap water that has sat out for 24 hours to let the Cl evaporate, b/c I ran out of purified) once per day (at most - probably more like 5 times per week, because I work overnight sometimes). More info (and pics) below:
Strain; White Widow (feminized) via ILGM. 3 months old now, and about 22" tall.
Soil in pots (Espoma organic potting mix, perlite, and flower tone for nutes)
System type? not sure what this means
PH of runoff or solution in reservoir? I don’t have a pH meter… guessing that is something I need?
What is strength of nutrient mix? Espoma Flower Tone
Light system, size? Galaxyhydro™ 180W UFO LED Grow Light 60x3W Full Spectrum 9-Band IR 3W Grow Lamp (10-12" from top leaves). Typically I was doing 18/6 hours of light/dark, but since the leaf problem, I’ve done 24 hours of light to try to encourage metabolic consumption of some of the excess nutes (if it works that way).
Temps; Day, Night 70 degrees
Humidity; Normal indoor apartment humidity
Ventilation system; No. Open air
Pics of the sickly leaves:
Thank you so much in advance for reading and for any advice you may be able to offer.