Category Archives: Weeds

Parasitic Plants Offer Insight Into Plant Communication

dodder

You might be familiar with carnivorous plants (like the Venus fly trap) that feed on insects, but have you heard of parasitic plants that feed on other plants?

Parasitic plants aren’t much of a problem for home gardeners in Virginia, but they do have very important lessons to teach us about the ways that plants communicate with and sense one another. For example, dodder, a relatively common parasitic plant in Virginia, germinates and then grows towards a host plant that it will latch onto in order to steal water and nutrients. Dodder has evolved a sophisticated set of sensory adaptations that allow it to find appropriate host plants without being able to “see” what’s around it.

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