Landscaping Resources Watsonville, CA | K&D Landscaping

Common Landscape Pests in California—and How to Control Them

Written by Holly Petherbridge | Jun 12, 2026 4:40:39 PM

If you manage a large property on California’s Central Coast, you know that keeping the landscape healthy and attractive is no small task. One month it’s aphids distorting new growth, the next it’s gophers tearing up turf, or residents complaining about yellowing plants. What should be a thriving outdoor space can quickly turn into a source of stress when pests take hold.

The real challenge is that these issues don’t just affect aesthetics. Left unchecked, pests can damage irrigation systems, destabilize slopes, spread disease, and create costly liabilities. Protecting your investment requires more than occasional spraying—it takes a proactive, integrated approach to pest management that keeps landscapes resilient year-round.

Table of Contents

Why Pest Management Matters in Landscape Maintenance

Pests threaten far more than just the appearance of your property. Sap-sucking insects can weaken plant health, rodents can destroy turf and irrigation lines, and burrowing animals can destabilize slopes and retaining walls. Beyond plant loss, these issues can lead to irrigation damage, erosion, and even safety hazards for residents or tenants.

The financial risks are real—replacing mature trees or repairing hardscape damage is costly. Early detection and integrated pest management (IPM) strategies are crucial. By incorporating pest control into routine landscape maintenance, you protect your investment and ensure your property continues to look healthy and welcoming year-round.

How to Manage the Most Common Landscape Pests

Pest pressures vary throughout the year, but these are some of the most frequent culprits in California’s Central Coast.

Aphids

These sap-sucking insects distort plant growth and create sticky residue that attracts ants and leads to sooty mold. They spread quickly if not addressed, making routine monitoring and proactive treatments an important part of any management plan.

Whiteflies

Thriving in hot, dry conditions, whiteflies cause yellowing leaves and overall plant stress. Keeping populations in check requires seasonal inspections and well-timed treatments that align with plant growth cycles.

Asian Citrus Psyllid

A serious threat to citrus plants, this pest weakens trees and spreads huanglongbing (HLB), a fatal disease. Regular inspections and compliance with quarantine protocols are critical in preventing long-term damage.

Light Brown Apple Moth (LBAM)

With a wide host range—including ornamentals, fruit trees, and grapes—LBAM damages leaves, flowers, and fruit. Because it’s regulated under county agricultural inspections, professional monitoring and reporting are key parts of management.

Grubs

These pests feed on turfgrass roots, creating spongy, yellow patches that attract predators like skunks or raccoons. Preventative applications and turf health monitoring are essential to protect large lawn areas.

Gophers

By tunneling underground, gophers destroy turf, break irrigation lines, and disrupt root systems. Addressing them requires licensed specialists who can implement safe, effective, and compliant control methods.

Ground Squirrels

Beyond chewing plants, ground squirrels erode slopes, damage hardscapes, and weaken retaining walls. Long-term mitigation strategies often involve a combination of exclusion, habitat management, and property-wide monitoring.

Pest-Borne Plant Diseases

Pests also spread diseases like sooty mold or root rot, which thrive in stressed landscapes. Addressing these issues requires a combination of improved soil health, irrigation management, and targeted treatments delivered as part of an integrated approach.

When to Bring in the Experts

Even with routine monitoring, some pest problems require professional intervention. Signs that it’s time to call in a landscape management team include:

  • Uneven turf or spongy patches
  • Visible pests or insect activity
  • Chewed plants or exposed roots
  • Complaints from residents or tenants

Seasonal considerations also matter—summer brings surges of insect pests, while gophers and squirrels remain active year-round. Pest management should be preventative, not reactive. Regular inspections and consistent monitoring are the most reliable ways to keep landscapes thriving.

What Sets K&D Landscaping Inc. Apart

Pest management supports long-term plant health, protects infrastructure, and ensures landscapes continue to look their best. At K&D Landscaping, Inc., it’s seamlessly integrated into every maintenance program.

  • Local Expertise: A deep understanding of pest patterns unique to California’s Central Coast.
  • Licensed Technicians: An in-house team trained in both pest control and landscape care.
  • Integrated Solutions: Preventative monitoring and treatments included as part of complete maintenance plans.
  • Responsive Service: Real-time reporting, quick action during outbreaks, and proactive communication.

To protect your property with a maintenance plan that prioritizes pest management alongside overall landscape health, contact K&D Landscaping, Inc. at (831) 728-4018 to talk with an expert.