I have been using UV light for years to trap insects and look for other invertebrates such as scorpions. I recently decided to use UV light to look for pests in the garden. When scanning the tomato plants they lit up like Christmas trees with tomato hornworms glowing a bright blue-green in the light. I was able to remove over 20 of them in five minutes; because of the dense growth of the plants none of these were easily visible in daylight.

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Great idea! I didn't know the hornworms would glow. I do use the light for scorpion hunting.

Someone, (hint, hint @PaulKnight ) needs to submit this as an Idea.

@lauribob - great idea for you, go after those hornworms!

woofie said:Someone, (hint, hint @PaulKnight ) needs to submit this as an Idea.

That way everyone can see it, and you'll get acorns, Paul!

This is an awesome thing to know!!! Thank you Paul!

super cool! Do all bugs light up? I should know this...

Very neat!

Paul, please consider submitting this in the Community Ideas to share with everyone and collect more .

Does anyone know what other common garden creatures would glow?

I don't know which other ones do, but there are some neat images here.
https://www.bing.com/images/se...