Blue Dream fan leaf downward droop (PICS)

Aruka

Active Member
Fox Farm Ocean Forest soil with 3-4 inches of sand at bottom
4x5 foot boxes in a greenhouse
Plants were healthy clones put into boxes on June 1st
Watered with spring water, ph 6.7
July 1st all plants were given tea containing small amounts of: worm castings, High N guano, peruvian 10-10-1 guano, maxicrop liquid kelp, great white inoculant and molasses.

4 varieties planted and the blue dream has been by far the fastest growing plant, almost double the size of the others.

2 weeks ago the largest blue dream plant started showing leaf droop of sorts. the highest large fan leaves just drop strait down and the sides fold upwards. slight ramshorning at the very tip of some of the leaves. they feel stiff to the touch. no yellowing or other noticeable discoloration. one interesting note is that the south side of the plant seems more affected than the north side.

it was during a hot spell (95ish in the greenhouse) so I assumed it was heat damage or underwatering. top few inches of soil were very dry but after increasing watering and buying more fans the problem persists, now affecting all blue dream plants but the 1 AK47, 1 Sour D, and 5 Purple Kush are doing fine. the blue dream seem to be growing at a decent rate still but the problem seems to persist and even increase. high temps of the last week have been about 88F in the greenhouse with tons of ventilation and fans.

i just popped an affected leaf off and inside the stem it was, not quite dry, but rather almost gel-ish, like appearing to be wet but when I touched it no water came off onto my skin. tested a PK fan leaf and it left a nice wet streak on my finger tip.

this is my dads medical grow and he's definitely a competent gardener but we are at a loss. don't want to go into flowering with unsolved mysteries so any ideas are much appreciated, Thanks!

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jondamon

Well-Known Member
This looks alot like an over watering droop to me.

This statement worries me slightly

"Fox Farm Ocean Forest soil with 3-4 inches of sand at bottom"

Why the sand at the bottom? Surely this would not drain very well?

alot of people like to use some rocks or hydroton clay pebbles to help with drainage in the bottoms of their pots.

J
 

Aruka

Active Member
Course sand drains well and we've used it for years in the bottom of our vegetable and herb raised beds. Maybe this years sand was sub-par and we're having drainage issues...? The problem with the over watering theory, in my mind, is that I've cut the watering schedule back and it seems as though the problem has only increased. Pops seems convinced that it is heat stress/under watering. He thinks that these plants, being bigger than the rest, were just not getting enough water to cope with the hotter days. I'm not normally one to doubt him on plant matters but I've just never seen MJ wilt in such a selective way from lack of water. In my experience the whole plant usually droops and then actually recovers when it's watered but this has not been the case at all. Appreciate the responses, sincerely.
 

jondamon

Well-Known Member
Like i said Aruka it was just my Opinion.

Have you tried upping the Watering schedule to see if it changes? MOre frequency? Have you tried less Frequency?

IT could also be moisture related and be the RH of where you are growing them. Do you know the RH of your greenhouse?

J
 

Aruka

Active Member
RH fluctuates greatly from 30-40% in the day to 80% at night. I dug a test hole in the corner of one pot and it wasn't as damp down there as I had expected. It's quite possible that we were just not watering them deep enough. Going to start flooding them every couple days and see how they respond. Appreciate the help J and KaliKush.
 
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