Yellow leaves? A few things to check first
Look at which leaves changed, how quickly and what’s happening around the plant before changing its care.
The Zairi Flowers team · Updated 03.11.2026
An older leaf turning yellow is a different pattern from the whole plant changing colour quickly. Take a moment to look at the plant and its growing conditions before adding water, fertiliser or a treatment.
Four things to look at
- Where did it start: on older leaves, on new ones or along one side?
- How does the mix feel below the surface? Is there water in the saucer or outer pot?
- Has the plant moved, or has the light, temperature or watering changed?
- Can you see spots, webs or insects? Check underneath the leaves as well.
Try one change at a time
Too much or too little water, light, cold, old leaves and pests can produce similar signs. A photo and a short note help you compare over time or show us what’s happening. Check which plant you have and how it’s growing before deciding what it needs.
Use My Plants to record what you saw and what you did. If you spot pests, separate the plant from nearby ones where possible. Look up the right guidance before using a treatment.