OK, I've been growing these seedlings for a little more than two weeks, and they've shown signs of heat stress and have also stopped growing. There only about two inches tall. I wonder if that is normal? ...or if they can recover from heat stress at this stage? Is there anything to help a plant heal from heat stress?
as long as there is healthy plant material, the plant can be saved. Im not saying its necessarily easy, but you dont need that much of a healthy plant to get a healthy plant, if that makes sense. 2" tall doesnt sound very good, but ive got a seedling right now that is only about 2-3 inches tall, but has 4 developed nodes and has already been topped lmao. So, its not always a bad thing...what you should be more concerned with is how much development has occurred in the few inches. best way to cure heat stress is to remove the excess heat. Get your temps into the safe zone, and the plants will continue growth if they can. Dont overnute them, and be careful about overwatering...but be 100% sure youre not underwatering either. This could be just as, or more dangerous in heat stress.
what temp do you think caused the heat stress? are you sure its not nute burn? any soil that contains nutes can burn such a young plant. its the most difficult step as they can be stunted for a week or more when an issue occours. mine never recoverd, shrivled up and died.
thats a good point. without pics, its real hard to say for sure how bad the stress is, or if heat is really even a factor. sometimes, its hard to read between the lines and smoke at the same time.
The temperature was 90 degrees on one day but other than that it hasn't gotten much higher than 80 degrees and was generally below 75. It could be nute burn. I used Organic Miracle Gro for my plants, so that could be it, I guess. Hopefully all will turn out well.
Well, what can I do now that they're planted in Organic Miracle-Gro? I was told that the organic version was OK for these plants.
The organic version of Miracle-Gro. If it is indeed a nute overload, I don't think there is anything I can do about it because the plants are in Jiffy Cups and they're not ready to transplant yet. I guess we'll see what happens?
So organic miracle grow soil (there are lot's of things with the organic miracle grow name on them)? If so, there's not much you can do. If it poses a problem, you can always mix some regular soil with it and 'dilute' it a bit (like 50/50) before you transplant. If it's organic miracle grow nutrients, then just lay off of them for a while. If it's that dry organic fertilizer powder that you mix with the soil, then there's nothing you can do, other than diluting the soil you've already mixed. It's not that their products are bad, they are just strong. We use them outside in the gardens and have good success with them. For indoor plants that we grow, everything needs to be diluted, or used at half strength.