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Thats really interesting, ive been watering mid day, also the leaves that have spots generally end up falling off. I think the plant is getting rid of all of the damaged stems, because I noticed no new purple stems have been forming as the old ones fall off.

Pretty good, but i was unable to change the pH on my perlite/vermiculite plant; however the plant seems to be dealing and has no change in appearances except for the development of the calaxys, and as an experiment I put the soil plant outside right before I started flowering in 10/14 and the...

I doubt that they need nutes now maybe its a cal-mag defficiency in the old growth, they were looking very good for the weeks that they were outside, just now they are starting to have problems. Did you see what the spider did to the plant in the 4th 7th and 10th pic?

My blackjack plants were planted back in mid may and have been fine up until now. Ive been watering them with hose water. Recently small brown spots have been forming on a few leaves and some of these leaves have been turning yellow, brown and then they have been falling off. Also last night a...

Were the plants fine before the nute burn? Maybe you water logged the roots or maybe it is just a deficiency. Which specific nutes are you using?

I only used miracle gro for tomato plants twice. There is very little soil in this medium, and the soil that is in the pot has no nutrients in it. I used alaska bloom nutes about 2 days ago, but the discoloration is just on those two sets of leaves. Also thank you for telling me that my plants...

The base fan leaves weren't like this 2 days ago, the plant will probs be producing bud soon, but seriously... what happened biochemically (if you can explain using bio lingo) to cause this light discoloration. If it's relevant I caused serious toxicity issues during these leave growth, so I...

Well here are my plants right now, when do you think they will start to form some bud? Is it too late to plant some blackjack plants outside?

What's a good pH for the plants?

Oh yeah, I got a pH meter and it says that both of the pHs are 6.3.

What medium were you using? What about nutes and watering when they were seedlings?

What type of medium were you using? Perlite/vermiculite? What about when they were seedlings?

My pH is at about 6.3. I don't have the money to buy pH up and down. How should I lower my pH?

hey Robert, this is probably a bit much to ask, but how did you do your blackjack grow (nutes, light cycle, medium, watering frequency)?

what should the pH be? I've read many different opinions

Flushed with 2 time pot volume and problem remains

Overall the plants look much healthier, but now at half nutrients and in flowering for about 2 weeks at 10/14 one plant is curling in and the other one has yellow discoloration in some of the tips. Diagnosis? solution? and ideas pertaining to this would be helpful.

These plants are about 5 weeks old, one is in perlite/vermiculite, so I fed it light fertilizer as recommended on the bottle. The one in soil was fed nothing until 2 weeks old and even that was a small amount. They started to show toxicity issues at about 2-3 weeks, turning dark green and...

more pics also, which of these two nutes would you use?

Found some new problems to be annoyed at (curling leaves and light green coloring on leaves and in one case something that looks like a scrape). Fixes and opinions welcome.