I have a pretty good setup: grow lights (Spider Farmer SF2000 and Green Sunshine Electric Sky ES180 V3). They were under the Green Sunshine, but I moved them under the Spider. However, the problem is occurring under all of them—the bottom leaves have started developing white bumps, curling, and falling off.
So I definitely doing something wrong.
by LonelySingleSound
7 Comments
Maybe too much water. Spacing looks tight, do you have a fan on them?
Those look like they are ready to harden off and plant out. Is your weather such that you could introduce them to the outdoors a little at a time?
find a tutorial on removing non productive lower leaves. Are they getting root bound?
Edema. Taking up more water faster than the leaves can transpire to release the moisture, causes the cells to burst. Can be caused by uneven watering, excess water, and/or excess humidity.
Sounds like edema. Happens due to overwatering, humidity, and/or lack of airflow. They’ll be fine since you’re planting next week, but adding a fan to your setup could resolve the issue if you needed another 3-4 weeks. That said, those tomatoes look huge, definitely strong and ready for hardening off and planting next week if that’s your plan! 🙂
Agreed it’s edema, allow the soil to dry out more between waterings, until they feel lighter when you pick them up
Great advice, thank you! I’m in Central Texas with a similar climate and will start hardening them off this Sunday.