Yellow Leaves in Geranium (Pelargonium)
Zonal geraniums (pelargoniums) are popular bedding and container plants producing colourful flowers throughout summer
Geranium (Pelargonium) care requirements
These care conditions are most relevant to yellow leaves in Geranium (Pelargonium). Check each one as a potential cause.
Symptoms to look for in Geranium (Pelargonium)
Yellowing typically starts on lower, older leaves, sometimes progressing if the underlying cause continues.
Common causes in Geranium (Pelargonium)
Most commonly overwatering, given this plant's drought tolerance, though insufficient light or a lapsed feeding schedule during the growing season can also cause gradual yellowing.
How to diagnose yellow leaves in Geranium (Pelargonium)
Check soil moisture first. Wet soil + yellow lower leaves = overwatering. Dry soil = underwatering. Yellowing between veins = nutrient deficiency.
How to treat yellow leaves in Geranium (Pelargonium)
Let soil dry slightly between waterings, ensure the plant gets good light, and resume regular high-potassium feeding every 1–2 weeks during the growing season.
Preventing yellow leaves in Geranium (Pelargonium)
Water only when the soil has started to dry, feed every 1–2 weeks during the growing season, and provide full sun to partial shade.