Hi there everyone. Im a new user here, and Ive been having a very rough time with these plants. They were started outside, and have been doing quite fine for the first month or so of their lives. Now however there is something seriously wrong that seems to be hitting one plant after another.
It mainly seems to be affecting the top growth. The top set of large leaves beings to curl upward and downward at the same time, with the tips curling the most, in some cases curling in several loops back towards the plant. Then the leaves will start to turn yellow, to gray, to brown, then they die. The new shoots of growth also have their tips seemingly dead.brown or at least very yellow.
I have been checking the PH with a liquid kit and it appears to be steadily between 6-6.7 (A new test just done of the freshly watered soil reads 6.4). With my PH test kit also came test for N-P-K (liquid, same method as PH test) and the NPK tests lead me to believe I am N and P deficient but seem to be overdosing the plant in K (which doesnt make sense as Ive been using 18-20-20 plant food at 1/2 strength about once a week) I started out using Miracle Grow potting soil in peat pots, but have now transplanted them to 6inch pots with 50% Sta-Green Potting Soil w/ Slow Release Chleated Nitrogen. I have been watering with Filtered water only, yet the plants dont show much signs of improvement. Actually the opposite.
It may hep to point out that, except for the past 6 days, the past 2 weeks or so it has been extremely hot outside. Temps in the 90's with EXTREMELY high Humidity. Many of the Plants that had problems appeared to be holding water in their peat pots longer than the ones that seems healthy. Could this be due to the high humidity? Did I drown them?
Anyway here are some pics:
Pic#1: A view of the leaves curling up and down at the same time.
Pic#2: Lower leaves on the most dead plant. Seems to spread to lower leaves after 1 week or so.
Pic#3: Good view of dying tips new growth
Pic#4: My dominantly-Indica baby showing dead new growth/curling top leaves
Pic#5: A Perfect example of how the leaves looked the first day there were problems. (Note they dont look like this anymore)
WHAT IS HAPPENING!?!?!
Any ideas or info is greatly appreciated. Should I flush them? Are they deficient or is it overfert? Im completely stumped.
Thanks for the help