Fruit Tree Leafroller & Obliquebanded

🐛 Fruit Tree Leafroller

Archips argyrospila / Choristoneura rosaceana · Lepidoptera: Tortricidae

Leafrollers are identified by their distinctive behavior — they roll leaves into protective tubes and feed inside. Two species attack most orchard and ornamental trees in the US.

CaterpillarOrchard PestTortricidaeAppleLeaf RollingLepidoptera

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PestControlBasics Editorial Team

Reviewed by Derek Giordano · Updated 2026

Illustrated identification guide — PestControlBasics.com

🔍 Identification

Fruit Tree Leafroller (A. argyrospila): 20-25mm wingspan; mottled brown and gold. Overwinters as eggs on bark; hatch at bud break; larvae roll and web leaves. Obliquebanded Leafroller (C. rosaceana): Similar size; overwinters as larvae; 2 generations/year. Both attack apple, cherry, pear, walnut, and ornamental trees. Larvae: 15-25mm; pale green-yellow with dark head; wriggle backward rapidly when disturbed.

🧬 Biology & Behavior

Eggs overwinter on bark. Spring hatching larvae immediately begin rolling and webbing leaves for protection. They feed within the shelter, often webbing additional leaves together. Fruit damage occurs when larvae feed in the calyx or shoulder of developing fruit — causing cosmetic damage that renders fruit unmarketable. Second generation (obliquebanded) damages late-season fruit.

⚠️ Damage & Health Risk

Leaf rolling and webbing; fruit surface scarring from larval feeding; cosmetic fruit damage in commercial orchards; ornamental aesthetic damage.

🔧 DIY Treatment

Bt kurstaki spray at egg hatch (timing based on degree-days from Jan 1 biofix). Spinosad spray. Trichogramma egg parasitoid releases. Mating disruption pheromones for commercial orchards. Timing is critical — larvae inside rolled leaves are protected from most sprays.

👷 When to Call a Pro

Commercial orchards use degree-day models to time applications precisely — contact your county extension office for degree-day accumulation data and biofix dates in your area.

❓ FAQ

How do I spot leafroller damage?

Look for: leaves rolled into tubes tied with silk threads; individual leaves webbed to adjacent leaves or fruit; green caterpillars inside rolled leaves that wriggle backward rapidly when exposed. On fruit: shallow, irregular brown scarring on the shoulder or side of developing fruit.

When should I spray for leafrollers?

Fruit tree leafroller: spray at egg hatch, which coincides with pink bud stage in apple (when buds are just showing pink color). Obliquebanded leafroller: spray when spring-generation adults peak (captured in pheromone traps) and again for summer generation. Bt spray must contact young larvae before they roll leaves.

Factor	Details
U.S. Range	All or most U.S. states
Regional Detail	Distribution varies — consult your local extension service for regional prevalence data.

Factor

Details

U.S. Range

All or most U.S. states

Regional Detail

Distribution varies — consult your local extension service for regional prevalence data.

📅 Treatment Timing Guide

Treating at the right time dramatically improves results. Pest control timed to the life cycle uses less product and achieves better long-term control.

Period	Action
Spring	Inspection and perimeter treatment before pest season starts.
Summer	Active monitoring and targeted treatments as needed.
Fall	Preventive treatment before overwintering pests seek entry.

Period

Action

Spring

Inspection and perimeter treatment before pest season starts.

Summer

Active monitoring and targeted treatments as needed.

Fall

Preventive treatment before overwintering pests seek entry.

💰 Professional Treatment Costs

Service Type	DIY Cost	Professional Cost
Initial inspection	Free (self-inspect)	$75–$150 (often credited to treatment)
One-time treatment	$30–$100 in materials	$150–$500
Annual service contract	N/A	$400–$900/year
Severe infestation	Often ineffective alone	$500–$2,500+

Service Type

DIY Cost

Professional Cost

Initial inspection

Free (self-inspect)

$75–$150 (often credited to treatment)

One-time treatment

$30–$100 in materials

$150–$500

Annual service contract

N/A

$400–$900/year

Severe infestation

Often ineffective alone

$500–$2,500+

Prices vary by region, property size, and infestation severity.

❓ Common Questions About 🐛 Fruit Tree Leafroller

How do I confirm I actually have this pest (not something similar)?

The most reliable confirmation is a physical specimen — capture one and compare to reference images on this page. For cryptic pests (bed bugs, termites), look for secondary signs: frass, shed skins, mud tubes, or bites with a specific pattern. When uncertain, a professional inspection is faster than months of misidentification.

Can I treat this myself or do I need a professional?

DIY is effective for small, accessible infestations caught early. Professionals are worth the cost when: the infestation is inside wall voids or structural elements, multiple rooms are affected, you have health-risk pests (hantavirus, venomous species), or DIY has already failed twice.

How long until the infestation is completely gone?

Expect 3–8 weeks for most infestations with proper treatment. Insects with dormant life stages (pupae, eggs) extend the timeline because those stages are impervious to most insecticides. Follow-up treatments at 2 and 4 weeks catch each new cohort as they emerge.

What's the most common mistake people make treating this pest?

Treating only the visible pest population while ignoring the harborage site, entry point, or breeding location. Killing adults provides temporary relief but the population rebuilds from hidden egg cases, pupae, or new arrivals through unaddressed entry points.