Earlier spring means earlier pests for gardeners

By Blake Jackson

Spring is peeking around the corner, bringing warmer temperatures and signs of life in the garden. This earlier-than-average start has implications for insect pests, and gardeners should be prepared.

The earlier blooming daffodils predict an earlier emergence of allium leafminers, a destructive insect for onions and other allium crops. Based on past data, these pests might appear by the end of March this year, compared to early April last year.

This earlier emergence likely applies to many other insect pests as their life cycles are driven by temperature and day length. Gardeners, particularly those growing alliums or transplants in greenhouses, should start scouting for pests earlier than usual.

Here are key takeaways for gardeners:

• Scout for alliums: If you grow onions or other alliums, start scouting for allium leafminers before the end of March.
• Early pests in greenhouses: Be vigilant for common greenhouse pests like aphids and thrips, especially when growing transplants. As "food" for predators like ladybugs arrives early, pest populations can explode quickly.
• Pest control for transplants: Scout thoroughly and have your usual pest control products on hand. Consider using biological controls like lacewings but check availability if needed on short notice.
• Virus prevention: Early pests can also transmit viruses. Close monitoring and population control are crucial, especially for tomatoes in greenhouses.
• Early pests in fields: Field-grown vegetables and fruits will likely see insect pests earlier this year. Consider using insecticide-treated seeds or acting as soon as pests appear.
• Smaller transplants are more vulnerable: With an earlier emergence of pests, smaller transplants might be more susceptible to damage. Monitor closely and act if needed.

By being aware of the potential for an earlier-than-usual insect onslaught, gardeners can take proactive measures to protect their crops and ensure a successful growing season.

Photo Credit: gettyimages-johnbraid