I am a first time grower here and I have a beautiful mother plant that I want to make babies from, but she is showing some signs of stress, only in the leaf tips...From what I do know, it is a good indicator area for moisture stress to show its head. The plant is vigorous in every other regard, but I have had the leaf tips curling down for about 2 weeks now, and I am ready to make them go away. Any help would be appreciated. I also have dark purple on new stem growth, but that is a separate post altogether. I suspect a pH imbalance, potential calcium or sulfur deficent. Thanks! Any brilliant ideas??? The next thing I am planning on doing is a leach with thrive alive B1 @ 1/2 strength. medium : roots organic soil nutes : roots buddha grow (2.0-.5-1.5) every watering foliar : spray-n-grow w/ coco-wet every 10 days reverse foilar : pure h20 every 7 days container : smart pot # 3 climate: temp : 75 RH : 30% lights: 216 W T5 6500K
It appears to have yellow tips and that can be over fertilizing. I am not a soil grower, but I thought you only use nutes every 3rd watering or so. On the positive side, that is still a very healthy plant and looks just fine.
I'd lean towards over fert. Why don't you just check the pH to knock that off the list right now? That should be the first thing you do to assess a problem. Have a look for yourself what Calcium and Magnesium Deficiencies look like: https://www.icmag.com/ic/showthread.php?t=11688 Not Mag, Could be Cal though.
Nutrient feeding a soil grow every watering is overdoing it. The plant can only absorb so much. Your plant look like a beauty. Back off nutrient feeding with every watering. Other things to consider: 1. root bound 2. soil temp to cold 3. micro-nutrient deficiency - possibly 4. pH imbalance resulting in nute lockout. i.e. preventing uptake. Based on what you've provided the safe bet is to cut back on the feeding. Cheers and good luck.
the older growth is dark green. I leached last night with 9 gallons of thrive alive b1 at 1/2 strength. Hopefully this will cure my problem!
Possum 38north: I just transplanted her from a 2 to 3 gallon Smart Pot 2 weeks ago, so I don't think she's root bound, the soil temp is definitely not to cool, and I think that it's possible that my foliar feeding with Spray-n-Grow with the lights on could have burned her a little bit, but that was my attempt at micro-nute feeding. I think the pH is a likely culprit here........ Thanks for the response everyone! The pH R.O. from the leaching was just about where I want it (6.5), based on my cheap General Hydro liquid pH concentrate vial check. I am seriuosly interested in getting a good quality digital pH meter, just so I have some consistency. Any recommendations?
Wow, very similar to my problem, click the link to see my pics a rollitup.com. Leaf tips curling down ps. the plant is older and bigger than in the picture, still the same problem.
It's 100% magnesium deficiency. That's why all the purpleing of the stems. Hygrohybrid vid... http://www.youtube.com/watch?v=n8cqpRPGmVw
I disagree. People make too big of a deal out of purple stems. That's a natural trait in a lot of strains. If I don't see signs of mag def in the leaves, I have no reason to assume that the stems would show it. The op's leaves look like he's been feeding too much N, and his comments confirmed that. Overall it looks like a happy plant that just needs fed a bit less.