How to Check Your Garden for Pest Activity

Maintaining a thriving garden requires vigilance, especially when it comes to managing pests. Regular inspections are your first line of defense against potential infestations that could harm your plants. By routinely checking for signs of pest activity, such as chewed leaves, discolored spots, or the presence of insects, you can catch problems early and address them before they become severe.

Additionally, integrating natural predators, using organic pesticides, and ensuring proper plant health through adequate watering and fertilization can further enhance your garden’s resilience against pests. Taking these proactive measures will help ensure that your garden remains lush and vibrant throughout the growing season.

Step-by-Step Inspection Guide

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1. Early Morning or Late Afternoon Checks

Inspect your garden during the early morning or late afternoon when pests are most active and easier to spot. This timing also avoids the heat of the day, making it more comfortable for you to conduct a thorough inspection. Early morning dew can make pests more visible, and in the late afternoon, shadows can help highlight movement on plants.

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2. Examine the Undersides of Leaves

Many pests, like aphids, prefer to hide on the undersides of leaves where they are shielded from direct sunlight and predators.

Gently lift leaves to check for clusters of small insects or eggs. This area is often overlooked but can be the starting point of an infestation. Regularly checking this hidden space can help you catch problems before they spread.

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3. Look for Discoloration and Deformation

Yellowing, curling, or misshapen leaves can be signs of pest damage.

These symptoms often indicate the presence of sap-sucking insects such as aphids, whiteflies, or scale insects. Inspecting the leaves closely can reveal subtle differences in texture and color that signal a pest problem. Early detection of these signs can prevent more extensive damage.

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4. Inspect Stems and New Growth

New growth is particularly attractive to pests due to its tender and nutrient-rich nature. Examine stems and emerging leaves for any signs of insect activity or damage. Look for any unusual swelling, scars, or frass (insect excrement), which can indicate the presence of borers or other stem-damaging pests.

Paying extra attention to these areas can help protect your plants’ growth points.

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5. Check for Webbing

Spiders arent the only web-building pest.  Quite a few pests leave behind visible webbing. Inspect between branches, leaves, and around plant bases for these signs.

Heavy webbing can indicate an established infestation that needs immediate attention. Look for fine silk-like threads between leaves and branches, which can trap moisture and attract mold, further harming the plant.

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6. Monitor Soil and Plant Base

Some pests, like ants, may be more easily spotted around the base of plants or on the soil surface.

Look for trails, nests, or unusual activity around the plant roots. This area can also harbor slugs, snails, and root-feeding insects that are detrimental to plant health. Regularly disturbing the soil around the base can help expose these hidden pests and reduce their numbers.

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7. Use Sticky Traps

Consider using sticky traps around your garden to help monitor for flying and crawling insects. These traps can give you an indication of the types of pests present and help you gauge the severity of the infestation.

Place them at various heights and locations to get a comprehensive overview of pest activity. Change the traps regularly to maintain their effectiveness.

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8. Analyze Overall Plant Health

Healthy plants are better able to resist and recover from pest attacks. Ensure your plants are well-watered, fertilized, and pruned to reduce stress and make them less susceptible to pests. Mulching and proper spacing can also improve plant health and deter pests. Healthy soil rich in organic matter supports beneficial organisms that naturally keep pest populations in check. Regularly check for signs of nutrient deficiencies, and address them promptly to keep your plants robust and resilient.

Common Garden Pests

aphid colony on flower buds

Aphids in your Garden

Small, often green insects that tend to cluster on new growth. They suck sap from plants, weakening them and causing distorted growth. Aphids can reproduce rapidly, especially in warm conditions, leading to large infestations that can severely damage plants if left unchecked.

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Spiders in Your Garden

While beneficial for controlling other pests, the presence of webs can indicate other pest activity in the garden. Spiders help keep the ecosystem balanced by preying on insects, but their webs might signal an abundance of insects, which could be a sign of underlying pest issues.

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Ants in your Garden

Often a sign of aphids or other sap-feeding pests, as they farm these insects for their honeydew. Ants protect these pests from natural predators, exacerbating the infestation. By transporting aphids to new plants, ants help these pests spread, making it more difficult to control the population and maintain healthy vegetation.

Inspection Frequency

To stay ahead of potential pest problems, you should inspect your garden at least a couple of times a week. This frequent monitoring allows you to spot early signs of pest activity before it becomes a significant issue, giving you the best chance to intervene effectively.


This could indicate the presence of spiders or spider mites, both of which can be harmful if their populations become too large. Spiders may create webs to catch prey, whereas spider mites weave fine webs on leaves and stems, often leading to discolored or damaged foliage.

Eaten Leaves

Holes, ragged edges, or missing sections of leaves are clear indicators of pest activity. These signs often point to caterpillars, beetles, or other leaf-chewing insects. In severe cases, these pests can defoliate plants completely, stunting growth and reducing overall plant health. Regular inspection and appropriate pest control measures are crucial to manage infestations.

Taking Action

ladybug eating an aphid
  • Manual Removal: Handpick larger pests or use water jets to dislodge smaller ones. This method is environmentally friendly and can be very effective for small infestations.
  • Natural Predators: Introduce natural predators like ladybugs to control aphid populations. Beneficial insects such as parasitic wasps or predatory beetles can also help keep pest numbers in check.
  • Organic Pesticides: Use organic or natural insecticides to treat affected plants without harming the ecosystem. Neem oil, insecticidal soap, and diatomaceous earth are some options that can be effective against a variety of pests.

Regular and thorough inspections will help keep your garden healthy and beautiful, providing a bountiful harvest or vibrant blooms free of pest damage. Happy gardening! Remember, the more you learn about the needs of your plants and the habits of your garden’s ecosystem, the better equipped you’ll be to maintain a thriving, pest-free environment.

If your garden isn’t thriving and you suspect pests, feel free to reach out for a hand with your outdoor pest control.  
For pest control in your garden or in your home, reach out to OMNIS Pest Control today!