Black spots usually need closer inspection before you decide whether it is fungal, mechanical, or just old tissue breaking down.
The pattern matters: scattered spots, ringed lesions, quick spread after rain, or blackening tied to the leaf edge all point to different causes.
The spread pattern and the weather usually tell you whether this is stress or disease pressure.
What this usually points to
Black spotting becomes more concerning when it spreads fast, affects multiple leaves at once, or starts after humid, stagnant conditions.
- Round or spreading black lesions often point toward fungal pressure.
- Blackening with edge burn can also come from stress, salts, or weather damage.
- The faster it spreads, the more useful a photo-based check becomes.
- Look at the shape of the spots and whether they are spreading after wet weather.
- Check if the leaf undersides, stems, or nearby plants show the same issue.
- Remove only badly damaged tissue first. Do not rush into random sprays.
- Do not water or fertilize by reflex before checking the substrate and how fast the symptom is changing.
- Do not treat everything as disease if the pattern still points more toward water, light, or roots.
Short answers before you do too much.
Is every black spot a disease?
No. Some are fungal, but some come from stress, burns, or tissue that is already dying back.
Should I remove affected leaves?
Remove the badly affected ones, especially if they are collapsing, but keep enough healthy growth to read the rest of the plant.
When should I scan the plant?
Scan it when the spotting is spreading, affecting fruit too, or showing up on several plants at once.
Open GospodApp and scan the plant in front of you.
The symptom page helps you narrow the problem down. The app helps when you want a faster answer from your own photo and a clearer next move.