gorillagrower0840
Well-Known Member
I am growing in canna coco and full line of canna coco nutes, a, b, rhizotonic, cannazym, boost, and pk 13 14. a few of the leaves have some small brown yellow spots on them. the tips of some of those leaves are also brown, curled up a little, and hard and crunchy. Overall, all my plants look healthy, but there's a few of those leaves with those problems. in the pic, it shows the spot in the middle of the leaf that is stained yellowish brown and also some tips that are brown and crunchy and curled. sorry if the color is off in the pic, but i don't have a good camera. i have been in flower for little over 5 weeks. these issues didn't start till after i started putting the pk 13 14 in the water, could it be phosphorus or potassium burn? i have been following canna's recommendations on how much nutes to use too. is it a toxicity or deficiency and of what?