Stage: Flowering
Strain Breeder: Elev8 Seeds
Strain: 🧬 Harlequin
Environment: 💡 Indoor - Grow tent
I want to know what you guys think went wrong here. She was doing so well and then all of a sudden her leaves curled up about a month before harvest. Buds didn’t really fatten like I expected them too. Harvested 60g of bud, 25g of trim. But she was a big girl and should’ve been a 3-4oz-er.
She did have some nanners in the beginning of flowering. I have never had that happen so idk how much that affected her weight. No seeds in the harvest though.
To me the leaf curling looked like heat stress. Temps never got above 95°F(35°C), I had another tree in the tent with her and she didn’t flinch. I grew out another pheno of this strain earlier in the year with 4-1/2 weeks less veg time, it was stunted, and only had 9 bud sites, yet it yielded almost 60% of this harvest.
Hi @Hydrokracker, the curved leaves could be for many reasons. From your Growlog I can see that it seems to be a temperature issue, due to be too close to the lights or the environment is too hot.
Other reasons can be too cold or excess of water., but all point out to the heat. 35C is quite a lot for any environment.
Once in the flowering stage, their water and nutrients consumption is higher, so unless you’re checking the soil every day, they might be dry and only receiving heat.
Try to log the temperatures and the watering so you can detect issues like these quickly.
The heat will slow down the growth of your plant. and you’ll get less yield and more g’s of trim.
I recommend you check the distance between the plant and the lights, and also water them at night (their night time) so it less stressful.
I was thinking it was heat stress. About a month out from harvest and they kept curling up and getting crispy. Distance from the light was a little over 18" (Platinum p300) which is much higher than I finished another pheno of Harlequin. The other pheno loved the light and was ~12-14" toward the end with no signs of stress at all.
She got plenty of water and nutrients all the way through. She was in a 15 gallon pot as was getting about a gallon a day. Granted the humidity was really low (25-40%) so a lot of water was going thru her. But I used a fabric pot and only watered when the soil was dry. I would skip a day every couple of days as the pot wasn’t quite dry enough. I was waterinrg in the light though. I never ever open the tent during lights out.
Yes, I believe heat stress is the issue here.
When I say water at night, I mean to say before they are going to sleep, so they don’t get much heat after the watering, especially if the environment is 35°C, which again is quite high.
It can happen sometimes you get a different growth for the same strain, it happened to me.
Try watering them right before they go to bed for a week and look for changes. Also if you can drop the temperature a little bit, that would help.
I can’t control the environment. All I can control is air flow and light schedule.
I grew a total of 5 different seeds of this strain. Of the 5, 3 of them were this structure and the other 2 were way different. This pheno has longer thinner pedals and is lanky like a Sativa. The other 2 were super fat pedals like an Indica. the 2 that have finished already have very very similar effects their potency is just a little different. The last one is finishing outdoors so it will be different in that respect which I am excited to see how that one turns out.
you can manipulate air flow to control temps around the plants if you can use miltiple sources if air on the plant at once you can change the temp of the canopy
