So I’ve got two seedlings that are nine days from sprout, and noticed some yellowing showing up on the slower grower around day 5. Sent some pics to my uncle who’s been growing for 30 years, he said not to worry about it but it’s kinda hard not to when I’m just watching it get worse. And now I’m noticing a brown spot on the other plant as well.
They’re in a half gallon of unamended Happy Frog. The initial wetting of the soil and their first watering were pH’d at about 6.1, the guys at the grow shop set me straight, and the waters been at 6.5-7.0 since then. My best (probably wrong) guesses are either that the screw up early on is still causing some problems with nutrient uptake, or I’ve just been under/overwatering them. Been waiting till the soil is dry knuckle deep, but honestly have no idea if I’ve been giving them the correct amount of water each time. Maybe even just got unlucky with a hot batch of soil.
Other factors: Temps at 77ish lights on and 67ish lights off, humidity kept at whatever keeps the VPD around 1.0, and Photone reading about 350 for the lighting. No nutes given so far.
It looks like the damage is caused by water collecting at the leaf edges/tips. There’s no reason to ever spray a cannabis plant with anything unless absolutely necessary to treat mold or bugs. Misting invites more problems that it solves.
Monitor the plant for healthy new growth. So long as you have that the plant will be fine.
Makes total sense! I’ll stop the misting, luckily new growth that was only misted once or twice look to be pretty healthy. Thanks for the help!
Follow-up if you don’t mind, do you think mist from the humidifier could be collecting on the leaves as well? I haven’t noticed any, but it’s a cheap Aldi brand PoS so it’s probably not a very fine mist. It’s inside the tent right now because the lung rooms fairly large, but I could see about placing it right by the tent intake if it would make a difference.
It could if you are using a humidifier that uses ultrasound to vaporize water into the air. It is best to use evaporatative, wicking humidifiers. What happens with ultrasonic humidifiers is that they also aerosolize the minerals in tap water and that generates a white mineral dust that gets all over your plant and grow space. The mineral dust will clog the leaf stomata and that limits leaf respiration.
If using an ultrasonic humidifier, then it is best to use distilled or RO water, as these types of water contains no minerals.
Now you’re speaking my language, six years at bed bath and beyond taught me way more about humidifiers than any sane person should know. Been only distilled water in that bad boy, but hadn’t considered the impact of the size of the water particles on the plants. The more damaged plant is closer to the huey too, so that makes even more sense.
I’ll see how it does in the lung room, I was planning on investing in a nicer unit to do that down the line anyway once I’d recovered a bit from the initial purchase.
A little update, I’ve been watching the new leaves and notices the tips starting to curl and have slight discoloration, which is exactly how it started on the older ones. I’ll upload some close ups, thinking maybe potassium or phosphorus deficiency? Or I’m worrying too much and seeing things.
I actually chatted with some folks who’ve been growing for a while at the head shop and gardening shop today and have gotten a totally different answer from every source, so I’m feeling pretty lost right about now. Part of me wants to play it safe and see how the girls work themselves out over the next few days, and the other part is worried that by that point the growth will be too far gone to save.
Your plant looks fine and new growth is coming in. I don’t see anything to be particularly concerned with. Blemishes are normal and they come and go. Fretting over every blemish will drive you crazy. We all went through it as new growers. Don’t let it discourage or frustrate you. You are doing fine.
Alright so things have been going pretty well over the past few days and I’ve got a few new amateur questions that I’m not sure warrant another thread. Still learning the etiquette around here.
Anyway, here’s the situation; those first leaves that were browning have slowed their deterioration significantly but are definitely still dying, however new growth looks great so I’m not worried at all. Simple question about those is when should they be cut off?
Second big event was that roots started popping through the nursery bags so I put the girls in their final 5 gallon homes. My method of transplanting was sprinkling the hole with myco and plopping the whole bag in, but now my knuckle deep method of watering is kinda jacked up. The soil in the nursery bag dried faster than the soil in the pot, which one should I base their next watering on? And does the knuckle deep rule even apply with plants this young (15 days from sprout, fourth node juuust developing) in such a big container?
Welcome to the club.
Everybody has different ideas and every grower grows differently.
Lots of factors affect a grow causing different effect. @MidwestGuy is great for answering your questions, not the store guys, IMO.
Definitely, one of those guys told me that all feminized seeds were autoflowers so I’m learning pretty quick that a lot of people just have no idea what they’re talking about. So far the folks on this site and Ed Rosenthal’s book seem like the best bets for getting accurate information.
Looking good Nikc ,my first grow is about the same age, soaked my seeds 1-1-24. Have done a few outdoor grows so this is new to me also, I learned from the outdoors grow these plant are tough and will take a beating and still give you happiness, I will tag in my grow for comparison if you would like, should be transplanting the nursery bags into 5 gal fabric pots here soon maybe this weekend.
Thanks! Your plants are looking real good too, I’d love to follow along. I’m thinking I should just start a journal on here myself, might make getting this real rookie help easier
Good point. We do see bad advice coming out of grow shops occasionally. I would stick with advice from the more experienced growers here. The collective of growers here have literally many decades of collective grow experience. The folks who have been around here for a while have seen about everything. The whole intent of this forum is to ensure that growers of all kinds are successful with their grows and no one is going to try to sell you stuff you don’t need here.
