The Grow Awards 2026 🏆 
Yellow/brown and crispy lower leaves?
Growpotkinstarted grow question 5y ago
Some of the lower leaves on my Purple Punch Auto are turning yellow/brown and crispy (day57-58). The one pictured has just developed like this—I trimmed a fan leaf yesterday that was in bad shape. Any advice would be great!
likes
MrBlocc420answered grow question 5y ago
You might be having a nitrogen deficiency, A cannabis nitrogen deficiency will cause the older, lower leaves on your plant to turn yellow, wilt away and eventually die. The plant typically appears pale or lime-colored.
The yellow tips and curling edges can be from light or heat stress .
Similar Grow Questions
Solved
Dillsnills
Deficiency of P and K?Can someone help me with what is going on w this Pineapple Express Auto Fast Buds, week 8 of flowering, it looks like a nute deficiency, P and K. Looking for advice input opinions greatly appreciated. Run off ppm 1100 intake 350 ph 6.5-6.6.Leaves. Curl down
Leaves. Color - Yellow
Feeding. Deficiences
5y ago
1
1
Solved
Growing_Spartan
Anyone know this yellowing?Hello everyone, I’ve got 2 autos going from 420FastBuds and im starting to see some yellowing in the leaves. I didn’t PH till I saw their first set of leaves and I was using bottled water but now I have my water dechlorinated and ph set to 6.4 for every watering.Leaves. Color - Yellow
2y ago
2
Solved
sdelapena85
Anyone out there able to identify N deficiency on newer leaves or if the lighter color is just the way the strains new growth looks? I worry and have the habit of wanting to do more more more which I am trying to stop. Trying organic. Should I roll on, feed N, or top dress?Week 8
Leaves. Color - Yellow
6y ago
1
1
Solved
Dandamans
Hello, one of my seedlings (In pictures) is looking yellow compared to other plants. Its leaves are also facing up compared to others face down. Was possibility overwatering(New grower) but i have seemed to now corrected that. Is this problem something I should be concerned with?Week 1
Leaves. Color - Yellow
7y ago
3
2
Solved
Bluntblazer66
Yellowing leavesYellowing leaves?
Help if you canWeek 1
Leaves. Color - Yellow
5y ago
3
1
Solved
arctic
Hi all! :( I am using RO water 030ppm. 200ppm(0.4ec) canna calmag agent 400ppm canna aqua. HPS 600w. 25с, 40-50%H, ph 5.7-5.8 total ppm ~ 550-650. I dHi all! :( I am using RO water 030ppm. + 200ppm(0.4ec) canna calmag agent + 400ppm canna aqua. HPS 600w. 25с, 40-50%H, ph 5.7-5.8 total ppm ~ 550-650. I don't understand what's going on: (all young plants get older and similar problems begin. it cal mag deficiency?Leaves. Color - Yellow
Feeding. Deficiences
5y ago
5
9
Solved
TheObserver
Flushing time?Hi good people, do I have to start flushing on one of my two plants? Just started week n.14 from seed.
Beside the wind burn, will She be ready to be harvested in 2 weeks?Buds. Other
Leaves. Color - Yellow
1y ago
1
1
Solved
sacredgeometry
Yellowing and rust spots on leaves?I have yellowing and rust colored leaves in middle of all my plants. I am in 2 gallon pots, fox farm ocean forest soil. Currently feeding fox farm tiger bloom (2 tsp/gal), fox farm beastie bloomz (1/8 tsp/gal), fox farm big bloom (3 tsp/gal), calmag (1 tsp/gal) water ph 6-6.5Week 7
Leaves. Color - Yellow
4y ago
2
5
Solved
Scratchie
Sulphur deficiency?This hindu kush has light green/yellowing coming from the centre and it has been going on for about a week, does anyone know why this is happening? I was thinking sulphur deficiency but given how rare that is, I would someone with more experience to give an opinion.4y ago
1
1
Solved
PietertjeOpDeLijn
Newer leaves also turning yellow at the tips. Flush?Newer leaves also turning yellow at the tips. Started to give the plant Terra Bloom,Sugar Royal, Pure Zym and power roots again after only giving it water for 2 weeks long.
Is this a nutrient burn and will a big flush help it out?
Doesn't a big flush overwater the plant?Leaves. Color - Yellow
3y ago
4
9
Solved
MrGrowthSpurt
Please Help me Help a Friend.So a buddy of mine is growing outdoors, I'm growing indoors, we both are newbs, one of her plants is yellowing and decaying badly and she said she feeds 1 to 2 times a week rain water with no nutes and she doesn't ph the water. What could be the issue?Leaves. Color - Yellow
Leaves. Color - Dark-brown
4y ago
4
4
Solved
Osito
Is it time to flush or wait a week?Hey what’s up grow gang, we’re approaching the final weeks of flowers, but I was curious as to if our grow is ready to be flushed, or if they possibly need another week of nutrients, and also the best flush technique for best results. Thank you for answering in advance!3y ago
4
4
Solved
G4NJAG4NG
Hi growers! I am on week 5 flowering and I am only feeding bloom and bud candy nutrients, I am no longer feeding any micro and grow, because I am giving them less nitrogen obviously some leaves are starting to turn yellow, is this okay? I am half way through flower cycle.Week 11
Leaves. Color - Yellow
7y ago
1
1
Solved
Sconklin
Nutrient problems??Is this potassium or light burn? Or something way different?Week 4
Leaves. Color - Yellow
6y ago
4
4
