The Coconut Rhinoceros Beetle (CRB) (Oryctes rhinoceros) represents one of the most serious invasive insect threats to palms in Hawaii. Since its detection in the islands, CRB has caused widespread damage to coconut palms, royal palms, date palms, and native and ornamental species across residential, commercial, and cultural landscapes.

For Hawaii, where palms are iconic, economically valuable, and environmentally important, effective and sustainable control methods are essential. At Tipco, we support arborists and tree care professionals with proven solutions — including tree injection using Mauget Imicide® — to help protect palms from this destructive pest.

Understanding the Coconut Rhinoceros Beetle

Adult Coconut Rhinoceros Beetles are large, dark beetles capable of flying long distances. In Hawaii’s warm, humid climate, populations can establish and spread quickly, especially where breeding material such as green waste, mulch piles, or decaying vegetation is present.

While larvae develop in organic debris, adult beetles are responsible for palm damage. They bore into the crown of palms to feed on sap and tender tissues, often remaining hidden deep within the canopy.

CRB Damage to Palms in Hawaii

CRB damage is highly recognizable and has become increasingly common across the islands:

• V-shaped cuts in newly emerging fronds

• Holes and tunneling in the crown and petiole bases

• Reduced canopy density and distorted growth

• Increased susceptibility to disease and secondary pests

Repeated attacks weaken palms over time, and in severe infestations — especially with young or stressed palms — CRB can cause tree failure or death.

Why Tree Injection Works in Hawaii

Hawaii’s climate presents unique challenges for pest control. Frequent rain, wind, sensitive ecosystems, and urban density can limit the effectiveness and practicality of foliar sprays and soil applications.

Tree injection is especially well suited for Hawaii because it:

• Delivers insecticide directly into the palm’s vascular system

• Moves the active ingredient upward to the crown where CRB feeds

• Eliminates drift, runoff, and off-target exposure

• Provides long-lasting systemic protection

Injection is ideal for coastal properties, resorts, residential areas, and environmentally sensitive sites where surface applications may not be appropriate.

Using Mauget Imicide® for CRB Control

Mauget Imicide® is a systemic insecticide formulated specifically for tree injection. It contains imidacloprid, which is translocated through the palm’s vascular system and concentrated in the crown tissues where adult Coconut Rhinoceros Beetles feed.

When beetles consume treated tissue, Imicide disrupts their nervous system, providing control of active infestations and extended protection against future attacks.

Benefits of Imicide for CRB management in Hawaii include:

• Proven systemic performance in palms

• Effective delivery to hidden feeding sites

• Long residual activity from a single application

• Minimal environmental impact when applied correctly

Tree injection with Imicide is most effective when used as part of an integrated pest management (IPM) program alongside sanitation and monitoring.

Timing and Best Practices in the Islands

In Hawaii, CRB pressure can be present year-round, making early detection and proactive treatment critical. Treating palms before heavy damage occurs improves product translocation and overall tree recovery.

Applications should always follow label directions and be performed by trained professionals using proper injection equipment to protect both palm health and applicator safety.

Protecting Hawaii’s Palms for the Future

Palm trees are a defining feature of Hawaii’s landscapes, culture, and economy. The Coconut Rhinoceros Beetle poses a long-term threat if left unmanaged, but tree injection offers a precise, responsible, and effective solution.

At Tipco, we work with tree care professionals across Hawaii to supply injection products, equipment, and technical support to help stop CRB damage before it becomes irreversible.

If you’re managing palms in CRB-affected areas, Mauget Imicide®  is a proven tool to protect high-value trees and preserve Hawaii’s iconic palms.