Plant care guide
Bird of Paradise Yellow Leaves: Old Leaves or Rot at the Base?
Updated
Why are my Bird of paradise leaves turning yellow?
Yellow leaves on a bird of paradise come from mix that is too wet or too dry, root or crown rot, cold, hunger in a crowded pot, or simple age. When the base of the plant is yellow, look first at whether it is the oldest outer leaves fading, which is normal, or the stalks and crown going soft at the soil line, which points to rot.
What to do first
Check where the yellow is. Outer, oldest leaves on a firm plant can be cut off at the base. Yellowing stalks that are soft or dark at the soil line, in damp mix, need a root and rhizome check before you water again.
Yellow at the base of a bird of paradise is unsettling, because the plant grows from that point. The first job is to work out what is yellow: an old leaf, or the base itself. They point to very different problems.
NC State Extension’s Strelitzia reginae profile describes a clumping plant whose large leaves arise from underground rhizomes. The base of the plant is where roots, rhizomes and leaf stalks meet, so it is where both old-leaf yellowing and rot show first.
Where is the yellow?
| What you see | Most likely cause |
|---|---|
| One or two outer, oldest leaves yellowing, rest firm and green | Normal ageing |
| Several leaves yellowing, mix damp, stalks soft or dark at the soil line | Root or crown rot |
| Leaves yellow and dry, mix pulled from the pot edge, pot light | Too dry |
| Lower leaves yellowing on a plant packed into its pot | Nutrient shortage, root-bound |
| Damaged, discoloured leaves after a cold window or a night outside | Cold |
| Yellow or brown spots rather than whole yellow leaves | Leaf spot |
Old leaves. Iowa State University Extension’s diagnosis guide says the shedding of a few old leaves on an otherwise healthy plant is normal. UF/IFAS Extension’s bird-of-paradise factsheet recommends removing dead leaves and old flower stalks.
Rot at the base. NC State says root rot can occur from overwatering or poorly drained soil. University of Maryland Extension’s root rot page lists yellowing, browning and dieback of leaves, with browning or blackening of the crown and roots. UF/IFAS advises keeping mulch away from the stems of garden plants to reduce stem rot, so keep the crown of a potted plant clear of wet debris too.
The other causes
Wet or dry. UF/IFAS says dry or soggy conditions both cause leaves to yellow and eventually die. Clemson Extension’s bird of paradise factsheet says to wet the mix thoroughly, then let it dry slightly before watering again. It adds that watering will be less frequent in the colder, darker months. NC State says to keep the plant drier in winter.
Hunger and a crowded pot. Clemson’s disorders factsheet links yellowing lower leaves to nitrogen or iron shortage, especially in pot-bound plants. Clemson’s bird of paradise factsheet suggests feeding every two weeks in spring and weekly in summer, with none in autumn or winter.
Cold. Clemson gives 18–21 °C (65–70 °F) by day and 10–13 °C (50–55 °F) at night. It says to bring plants indoors when outdoor temperatures begin to drop below 16 °C (60 °F).
Pests. NC State lists mealybugs, scale and spider mites. Clemson adds whiteflies and aphids. Check stalk bases and the folds where leaves emerge.
What to do
- Cut off old outer leaves once they are mostly yellow. Cut low on the stalk with clean secateurs.
- Press the base of each stalk at soil level. Firm is good. Soft, dark or bad-smelling is not.
- If the base is soft or the mix stays wet, stop watering and check the roots and rhizomes. Follow our bird of paradise root rot guide.
- If the mix is dry, water thoroughly until it drains, then let it dry slightly.
- Feed in spring and summer if the plant is crowded and lower leaves are paling. Divide or repot an overcrowded clump in early spring, as Clemson advises.
- Move it away from cold glass and drafts in winter.
Yellow leaves will not turn green again. Judge the fix by the next new leaves.
If the plant is slumping rather than yellowing, see the drooping guide. For spots rather than whole yellow leaves, see bird of paradise brown spots. For light and feeding, read the bird of paradise care guide.
References
- NC State Extension Gardener Plant Toolbox: Strelitzia reginae
- UF/IFAS Extension: Bird-of-Paradise (ENH79)
- Clemson Cooperative Extension, HGIC 1562: Bird of Paradise
- University of Maryland Extension: Root Rots of Indoor Plants
- Clemson Cooperative Extension, HGIC 2251: Houseplant Diseases & Disorders
- Iowa State University Extension: Diagnosing Houseplant Problems from Improper Environmental Conditions
How this guide was put together: NC State Extension, UF/IFAS Extension, Clemson Cooperative Extension, University of Maryland Extension and Iowa State University Extension guidance.