Leaves getting yellow and fall

[Tomi]

Hello guys. I need some help. I staying in the hot South Africa. Growing in the greenhouse and my plants grow in the vermiculite and soil mix. I using the Biobizz brand Bio-Grow Fish-Mix and Bio-Bloom. My plants are in the first week of the flowering phase. Unfortunately the condition is very hot in the greenhouse. Around 3 weeks ago I found the leaves start to get yellow. I did add the Epsom salt. Maybe it was a mistake. Couple of plants got light green leaves is well. But most of the plants have a nice green leaves. Except the yellow leaves on the middle and the bottom. Thanks for any advice.

 

[Canuck147]

Cut the yellow leaves off and give her some nutrients. It should be a deeper colored green.

 

[Canyon Grower]

Agree with Canuck. Try some light nutrients but also remember that its normal for leaves on the inside or bottom of the plant to turn yellow. The plant senses that they arent getting much light so it disposes of them.

 

[OzzieWizard]

yes, there is a general nutrient shortage ... but I 'm wondering in regard to the heat where you grow ... have you got your pots sitting in a dish of water? my experience is that cannabis can handle very hot soil conditions PROVIDED it has a continual supply of water. when I used to grow in pots I always put trays or saucers underneath with water in them. in hot weather a six foot sativa can use 10L of water a day no trouble. so your pots could sit permanently in 2 inches of water no worries ... cheers!

 

[Tomi]

Cut the yellow leaves off and give her some nutrients. It should be a deeper colored green.

Thanks for your reply. I did cut the yellow leaves. But new ones coming. Some of them on the top. I was thinking about the bio fertiliser. Maybe it's got broken. I mean I have no opportunity to keep them in the cold place. I keep them in the house in the shadow. But still the temperature is 28-30 Celsius degrees.

 

[Tomi]

yes, there is a general nutrient shortage ... but I 'm wondering in regard to the heat where you grow ... have you got your pots sitting in a dish of water? my experience is that cannabis can handle very hot soil conditions PROVIDED it has a continual supply of water. when I used to grow in pots I always put trays or saucers underneath with water in them. in hot weather a six foot sativa can use 10L of water a day no trouble. so your pots could sit permanently in 2 inches of water no worries ... cheers!

Thanks for your reply. Unfortunately I do not growing in pot. Yet. Next time I will do. But so far they are in the 30 centimetres deep plastic tunnel. It's closed. No opportunity for the water to go away. If I make a hole on the plastic. The ant's and termites will attack my babies. And you are right. It's very hot. Sometimes 50 Celsius degrees.

 

[Tomi]

Agree with Canuck. Try some light nutrients but also remember that its normal for leaves on the inside or bottom of the plant to turn yellow. The plant senses that they arent getting much light so it disposes of them.

Thanks for your reply. Yes you are right. The leaves turn yellow. But not in the veg phase. The light is more than enough. Because it's a sun. And the place is Africa. Means a lot of lights. I was thinking about the nutrients got broken.