One leaf, a whole neighborhood
Search both sides of a leaf and leave its tiny residents where you found them.
Published September 25, 2026 · By Jeremy L. Koering
Look underneath
Choose a healthy plant along a path and gently inspect a few leaves. Look for eggs, caterpillars, aphids, small spiders, holes, silk or trails inside the leaf. Check more than one leaf: the absence of insects is an observation too.
Ask what the signs mean
Chewed edges suggest a different feeding pattern from a pale tunnel within the leaf. A caterpillar may be well camouflaged against its host plant, so watch for movement before touching anything. You do not need to name the insect to record what it is doing.
Try this: Spend sixty seconds with one leaf. Note the plant, the light, the weather and one change you notice when you look again. Fold the leaf back gently and leave its residents in place.
If you return in a few days, the same plant may tell a new story.
Notice the plant too
Photograph the whole plant as well as the leaf. A close-up of an insect may lose the context that helps you understand where it lives. Note whether similar marks occur on nearby leaves and whether the plant is in sun or shade.