Plant care guide
Peperomia Yellow Leaves: Overwatering, Light or Old Age?
Updated
Why are my Peperomia leaves turning yellow?
Yellow peperomia leaves most often mean the mix is staying too wet. NC State Extension names overwatering as the main cause of yellowing and root rot in peperomia. Low light, cold drafts, a long dry spell or lack of fertilizer can also yellow older leaves.
What to do first
Check the mix before watering again. If it is wet, let it dry, empty the saucer and inspect the roots. If the mix is dry and only a few old lower leaves are yellow, review light, drafts and feeding instead.
Yellow leaves on a peperomia are a common worry, and the usual cause is fixable. Many peperomias have thick, fleshy leaves that store water. That makes them tolerant of dry spells and sensitive to wet roots.
NC State Extension is direct about it. Its Peperomia profile says root rot and yellowing or curling of the leaves indicate overwatering. Its baby rubber plant profile calls overwatering a big problem that yellows leaves and can lead to root rot. Start with the pot.
Check the cause
Overwatering and root rot
Look for:
- Mix that is still damp several days after watering.
- Water standing in the saucer or a decorative outer pot.
- Yellow leaves that are soft or limp, or leaves dropping easily.
- Dark, soft stems at the soil line.
- Brown to black, soft roots when you tip the plant out.
Clemson Cooperative Extension calls root rot the most common disease of peperomia and says an overwatered peperomia drops its leaves. Clemson’s houseplant disorders factsheet adds that yellowing of a whole plant is most often caused by overwatering.
Corky bumps under the leaves
Clemson describes oedema as rough, corky swellings on leaf undersides and petioles. It occurs most often on succulent plants in winter, with wet mix, poor light and low temperatures. Affected leaves can yellow and fall. The marks won’t heal, but drier mix and more light stop new damage.
Low light
Clemson’s disorders factsheet lists too little light among causes of yellowing. NC State says peperomia prefers bright, indirect light and tolerates low light.
Older lower leaves only
Clemson says yellowing and death of lower leaves is generally caused by nitrogen or iron deficiency, especially on pot-bound plants. Lower leaves can also yellow if the plant stays too dry for a long time.
Iowa State University Extension notes that a few older leaves shed by an otherwise healthy plant are normal leaf turnover.
Cold and drafts
NC State advises protecting peperomia from cold drafts. Its baby rubber plant profile says the plant is intolerant of very drafty sites. Iowa State lists drafts from doors, vents and windows among causes of yellowing and leaf drop.
Pests
NC State lists mealybugs, spider mites, aphids, scale, fungus gnats and whiteflies. Clemson’s disorders factsheet notes insects and mites can also yellow foliage. Check leaf undersides and stems.
What to do
- Stop watering if the mix is damp. Let it dry before the next watering.
- Empty the saucer. Clemson advises letting the pot drain before setting it back in its saucer.
- Check the roots if the plant keeps yellowing. Firm, pale roots are healthy. Trim soft, dark ones.
- Repot into a well-drained mix. Clemson suggests a well-drained houseplant or cactus potting mix, in a pot only slightly larger than the old one.
- Discard a plant with a mostly dead root system. Clemson’s disorders factsheet says that if most roots are dark, soft and dead, it is better to discard the plant. Peperomia roots readily from stem or leaf cuttings, so take healthy cuttings first.
- Move it to brighter, indirect light if it sits far from a window. Clemson suggests an east or south window.
- Feed only in spring and summer. Clemson recommends a low-strength liquid fertilizer occasionally during the growing season.
- Remove yellow leaves. Clemson suggests trimming old leaves when needed.
Prevent it
Let the mix dry between waterings, as Clemson advises, and never leave the pot standing in water. If you tend to overwater, choose a cactus mix or add perlite. Keep the plant away from cold windows and drafty doors.
For more, see the peperomia hub, our peperomia varieties guide, and our guide to yellow houseplant leaves.
Related guides
Other peperomia problems we cover: drooping, dropping leaves, curling leaves, repotting, brown spots.
References
- NC State Extension Gardener Plant Toolbox: Peperomia
- NC State Extension Gardener Plant Toolbox: Peperomia obtusifolia
- Clemson Cooperative Extension: Peperomia Indoor Plant Care and Growing Guide (HGIC 1567)
- Clemson Cooperative Extension: Houseplant Diseases & Disorders (HGIC 2251)
- Iowa State University Extension: Diagnosing Houseplant Problems from Improper Environmental Conditions
How this guide was put together: NC State Extension, Clemson Cooperative Extension and Iowa State University Extension guidance.