Hello everyone, this is my first post and I hope I’m doing it right. Long story short, I’m having some issues with my plant and I could use some help, I’ll try to give as many details as I can.
Problem: Yellow/brown spots on leaves and leaves’ tips curling downwards
Medium/grow method: soil (BioBizz light mix)
Feed and supplements used: currently using BioGrow and BioBloom, planning on adding TopMax later in flowering
water source: tap water
Strain/age: RQS Quick One, 35 days old
light used: sunlight, usually 11-12 hours of direct light
Climate: temps hover between 28C/82F and 30C/86F, but can go to up to 32C/90F between 12:00 PM and 2:00 PM. At night temps are between 18C/64F and 20C/68F. RH is always at 50-70% but can go up to 90ish based on the weather.
Additional info: The plant is growing outdoors. I’ve been careful not to overwater and/or overfeed (I’m giving her half the suggested ferts) especially considering how hot the climate can be during the day. Yellow and brown spots started 3-4 days ago whereas the curling appeared a couple days ago. Some upper leaves are also curling inward.
I’m also posting some pictures. The first, second and third pictures were taken 3 days ago, whereas the last 2 were taken today and show two of the biggest fan leaves I had to remove today. Thanks in advance!
It doesn’t really look like a Mag deficiency. There is no yellowing, everything is a dark brown and spots started to appear away from the edge of the leaves. Lighting in the pictures probably isn’t the best, but the spots are darker than that.
I forgot to add that the leaves feel papery at the touch.
Yes, she’s definitely showing some heat stress :\ however there is not much I can do considering she’s growing outside. I’m trying to move her to shade during the hottest hours and she’s slowly recovering, higher leaves are completely unaffected now and she’s still growing well, thankfully.
As for the brown spots, I suspect it might be a Potassium deficiency. I’ll try to up bloom nutes a little bit to see how she reacts.