DiseaseMedium Severity

Pink Bud Rot

Nalanthamala vermoeseni

An opportunistic fungal pathogen that primarily affects stressed or weakened palms. While it can attack all parts of a palm, it is most problematic in growing tips (apical meristem) where new leaves are produced and in newly emerged leaves.

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Palm tree showing symptoms of pink bud rot disease

Identification & Symptoms

What to Look For

Spotting and rotting along rachis and leaves
Rotting along leaf tips, leaf bases, and trunks
Stunting and distortion of new leaves
Pinkish spore masses (distinctive diagnostic feature)
Brownish syrupy fluid may be present
Trunk rot in some cases
Progressive weakening and decline

Potential Damage

Death of growing tips and new leaves
Trunk decay and cavities (especially in king palm)
Complete plant death in severe cases
Bleeding and wilt in nursery and indoor palms

Lifecycle

Disease development favored by high humidity and temperatures of 65-80°F. Often cyclical in large established palms, with infection during cooler, moist winter/spring weather when growth is slow, and damage becoming visible as leaves unfold in warmer weather.

Professional Treatment Approach

1

Improve cultural conditions and reduce stress factors

2

Ensure proper planting depth

3

Improve drainage and aeration

4

Correct nutritional deficiencies

5

Remove and destroy infected plant material

6

Fungicide applications for prevention and control

7

Avoid wounding and treat injuries promptly

Recommended Mauget Products

Fungisol

Professional-grade treatment specifically effective against pink bud rot.

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Mycoject Ultra

Professional-grade treatment specifically effective against pink bud rot.

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