Heat problem? Help please!!

Hey, first grow here. I planted this bagseed baby in a small pot (0.5 gal?) on my window sill, about 6 weeks ago, my medium is 50% sterile garden soil, 50% biologically active home made worm castings. The medium takes a little bit to take moisture in, but I (think) I'm sufficiently careful not to overwater. In this pot I watered daily (the temp where I live right now has been about 85 - 100 F daily, with very low relative humidity). The plant had about 6 hours of full direct sunlight. Everything was going good, no pests, no spots on the leaves (maybe just the very bottom ones and cotyledons) and grew very well.

I recently (maybe 10 days) transplanted to a bigger pot (about 3 gal) with the same medium, and moved the plant over to the roof, where it gets about 8 hrs of direct sunlight, the heat has been the same and the same goes for relative humidity. But as you can see, the plant doesn't seem to be faring perfectly. I have damage in the edge of the leaves, which started from the bottom of the plant upwards. I'm pretty sure it's not nutrient burn, as I haven't added any fertilizers as of yet (since worm castings have given me pretty good results on other plants). About overwatering, I'm doing it every other day now, or less often if I feel the pot is still heavy, so I think that would not be the problem. The plant has grown pretty fast, currently about 1.2+ ft (when transplanted, about 4 or 5 inches of main stem got buried to promote roots), and I just did a FIM topping. The pics are from yesterday just before the FIM.

So what do you say, nute burn, lack of nutrients, overwatering, underwatering, heat shock, not sufficient hardening when moving it to the roof... I'm pretty much lost...

I'm thinking of another transplant, still in the hot and sunny roof (no other option for me) to a 5.3 gal planter, adding 1/4 of perlite or something similar to get better drainage. I wouldn't want to use synthetic ferts (there are no organic ferts where I live), but I will do it if necessary. Any thoughts? View attachment 1645870View attachment 1645871View attachment 1645872View attachment 1645873

Does not look happy. I'm seeing overwatering and magnesium deficiency. When it get's really hot in an area with low humidity, it will cause the top layer of soil to dry. This tends to lead people to think their plants are thirsty, when the rootball is still very moist.

Are you using tap or RO? PH?

It's tap water, pH around 6.8

I think worm castings are rich in magnesium (at least in theory)

IMO i really think the soil is holding too much water leading you to believe every other day is enough, i dont see any perlite or anything else in there to aerate the soil mixture, its probably soggy underneath the top layer, i made the same mistake with my 1st plant, i made my own "pot" with a 3 gallon bucket and although the plant looked beautiful..(the one on the left)....she came out all fucked up and rootlocked cause i didnt make enough drainage holes in the bottom...when u pick up the pot dont water until it literally feels like your picking up a pot styrofoam....believe me. under nute and underwater and she will bounce right back, almost guaranteed....and if u think its over nute, then flush it with alotta water, let it all drain and dont feed until its styrofoam light....

Definitely not a cal-mag or pH issue with tap water at 6.8...

I'd like to go with over-watering but you seem sure that you aren't. My better judgement is telling me that you would know if you were over-watering so I'd like to rule that out too. I'm seeing signs of deficiency.

Hmmm.... Are you sure you didn't over water?

Mmmm, I guess I could be overwatering. I'm getting a soil moisture sensor soon, but for now I guess Ill cut on the watering until I see leaves starting to droop, weigh everything and try to keep it close to that level. Though I'm worried that if I underwater, my plant wont survive the heat

rolas said:

Mmmm, I guess I could be overwatering. I'm getting a soil moisture sensor soon, but for now I guess Ill cut on the watering until I see leaves starting to droop, weigh everything and try to keep it close to that level. Though I'm worried that if I underwater, my plant wont survive the heat

Click to expand...

ill be honest with you rolas, most people would consider my ideaology unorthodox but i speak from experience of friends and personal experience, if you get too caught up with measuring PH, and run off PH, and RO or tap, or this and that, ETC, ETC., your gonna get yourself too wrapped up and technical and end up killing your crop, not many people will agree with me but trust me, its a beautiful life giving herb/plant, BUT...its just a weed and a very very resilient one at that, it will grow almost in spite of you, dont get too technical until u have a few grows under ur belt and then u can fuck around and micromanage the growth.... at first i was all concerned with distilled water and PH and all that, but soon, you realize, tap water, a easy/logical nutrient schedule, and dont overwater and youll grow big juicy stinky buds... trust me

rolas heres my current set up with 3 plants and they are in ABSOLUTE PERFECT health...the journal is in my signature if u wanna check it out

Thanks mazand, those are some good looking plants there! I'm counting on that resilience you mention, since my plant isn't looking very good. I guess I'll just let it go for a while, see if it was stress from the transplant/moving. Hope everything picks up from here.

Anyone else has another opinion? The plant is still looking the same, I'm letting it get dryer. The problem doesn't seem to be getting worse, but is still there (the top leaves were still all the way green last time, this time the very tips are starting to get brown)

I noticed another problem today, just on the very bottom leaves, some kind of transparent spots in the entire leaf... what could it be?

Please help, at this rate my plant will die in like a week

Really? No one?

Even though, like dsmoke1 said, the conditions really don't seem right for a cal-mag issue, those spots (if they're not from mites or anything else) could potentially be the start of a cal def, especially if they start turning rust colored (you said they looked transparent, when looking through the underside of the leaf?), and the leaf margins look like magnesium def, though usually it'd be the complete outer margins of the leaves turning yellow first, and on some of yours it's just the tips (not that anything's ever that simple, can have diff. patterns, as long as the end result is the same). At this point, it's a bit difficult to say, but those spots do look like an early calcium deficiency, and the edges a mag def that's progressed more (plus a magnesium deficiency starts from the bottom up).

Check out:

http://www.icmag.com/ic/showthread.php?t=11688

And yeah, mazand1982 was correct, allowing the soil to dry out completely is key, it allows the soil to get more aerated, and you'll notice that when you water it seeps through the top of the soil much faster, and has an easier time getting to those drainage holes. As they've said, you do seem confident in not overwatering, and you've allowed it to sit. How much lighter does the pot feel now than before?

I always wonder what happens to peoples plants when they abandon their threads :-/