Coconut Rhinoceros Beetle (CRB) Treatment for Kauaʻi Palms
Coconut rhinoceros beetles are killing Kauaʻi’s palms, but protecting your trees shouldn’t mean overpaying for treatment. Isaiah’s Tree Service provides targeted CRB trunk-injection treatment to help protect coconut palms, royal palms, and other vulnerable trees across the island — with fair, transparent pricing and our lowest-price guarantee. Isaiah’s Tree Service provides targeted CRB treatment to help protect coconut palms, royal palms, and other vulnerable trees across Kauaʻi.
This invasive pest bores into the palm’s growing tissue and can cause serious damage if left untreated. Our team injects your palms from the inside out, delivering systemic protection where beetles feed while avoiding broad spraying, soil drenching, and unnecessary runoff.
Get a free on-site inspection anywhere on Kauaʻi and see how affordable professional CRB protection can be.
Coconut palm fronds showing V-shaped cuts caused by coconut rhinoceros beetle damage on Kauaʻi.
✔ Lic. #CT-38150 | ✔ ISA-Certified Arborists | ✔ Free on-site evaluation | ✔ Licensed, Bonded & Insured
Catch CRB damage early and give your palms the best chance to recover with timely inspection and treatment
CRB feeds at the heart of the tree, where you can't easily see it. By the time the crown collapses, it's often too late. Here's what to look for from the ground.
Two-inch boreholes
Round to oval bore holes in palm frond stems can be a sign of coconut rhinoceros beetle activity as adult beetles chew into soft, developing palm tissue.
"V"-shaped frond cuts
Clean, V-shaped notches and wedge-like cuts across palm fronds can be a visible sign of coconut rhinoceros beetle feeding damage as injured leaves expand and open.
Scalloped, scissor-cut leaves
Palm fronds that open with scalloped or “trimmed” edges may indicate coconut rhinoceros beetle feeding inside the folded spear before the leaves fully unfurled.
Wilting, collapsing crown
When the center spear collapses and the crown begins to thin or die back, coconut rhinoceros beetle damage may already be advanced and the palm should be inspected as soon as possible.
See even one of these? Your palm may already be under attack — and CRB spreads to neighboring trees fast. Early treatment is the difference between saving a palm and removing it. Book a free inspection today→
Systemic trunk injection — from the inside out
We deliver insecticide directly into the palm's vascular system, so protection travels up into the crown where beetles feed — with no spraying, soil drench, or runoff.
01
Inspection & diagnosis
Our certified arborists check your palms for boreholes and chewed fronds, plus nearby breeding sites in mulch or compost.
02
Targeted trunk injection
Specialized equipment delivers Imidacloprid (Ima-Jet) or Acephate (Ace-Jet) into the tree, protecting the crown from within.
03
Pollinator & fruit safety
We follow strict environmental guidelines - trimming palm flowers and observing pre-harvest intervals to protect Hawaiʻi's pollinators.
04
Monitoring & maintenance
We schedule re-treatment and can coordinate neighborhood- or resort-wide programs to stop reinfestation at the source.
FORMULATION A
Ima-Jet (Imidacloprid)
A systemic insecticide injected directly into the palm trunk, where it moves upward through the tree to help protect vulnerable growing tissue from coconut rhinoceros beetle feeding damage.
Reapplied every 12 months — longest-interval protection.
FORMULATION B
Ace-Jet (Acephate)
A professional trunk-injection treatment that moves upward through the palm’s vascular system to help protect vulnerable growing tissue from coconut rhinoceros beetle damage.
Reapplied every 6 months — for higher-pressure sites.
Why injection beats spraying
Effective where it counts — responsible everywhere else.
✓ Delivered straight into vascular tissue, up to the crown
✓ No overspray, runoff, or leaching into soil and waterways
✓ Safe to use in dense, residential, and resort settings
✓ Extended protection with minimal environmental impact
Why Isaiah's Tree Service
Kauaʻi's own — treating our island like ʻohana.
Free, transparent pricing
No overspray or runoff
ISA-Certified Arborists
Lowest price guaranteed
Island-wide service on Kauaʻi
Licensed, bonded & insured
Free inspection
Get your free CRB inspection.
Tell us where your palms are and we'll come take a look — no cost, no obligation, anywhere on Kauaʻi. Whether it's a few ornamentals or a whole resort landscape, we'll give you a clear plan and honest pricing.
PREFER TO CALL?
ISAIAH'S TREE SERVICE
Family-owned, ISA-certified tree care serving the island of Kauaʻi. Protecting our palms is protecting our home.
Serving all of Kauaʻi
Hanalei · Princeville · Kīlauea · Anahola · Kapaʻa · Wailua · Līhuʻe · Puhi · Kōloa · Poʻipū · Kalāheo · ʻEleʻele · Hanapēpē · Waimea · Kekaha
For expert tree trimming, removal, pruning, and complete tree care across Kauaʻi, visit Isaiah’s Tree Service website today.
Selected coconut rhinoceros beetle educational images appearing on this website are used with written permission from Coconut Rhinoceros Beetle (CRB) Response.
© 2026 | All Rights Reserved | Isaiah's Tree Service
License # CT-38150
