Cucumber just got checked.
Most likely this is normal healthy growth in a Kratky setup. The plant has good green foliage, active vine growth, and the roots are still white and firm, which argues strongly against root rot or oxygen deficiency right now. The yellow flowers are normal for a cucumber that is approaching or entering flowering. Keep an eye on the root zone and water level, but nothing in the photo suggests an urgent issue.
Do now
No corrective treatment is needed today. Just maintain the Kratky reservoir and monitor the roots and new growth.
Also possible, but less likely
What would prove it
Recheck roots and new growth
Inspect the roots through the jar and compare the newest leaves. If roots turn brown/slimy or new leaves start paling, the diagnosis shifts toward root stress or nutrient imbalance.
Turn this into a recovery case
One photo gives a diagnosis. Tracking proves whether the plant is recovering.
Don’t leave the diagnosis hanging 🌱
Save it now, then use the next photo to confirm if this was the right call.
Create account & save plant 🌱