Vampire plant
Remember that mini-book I'm
working on? After a bit of a rocky start, I've been whizzing
through it, enjoying spending some time in the scientific literature as
I polish my factoids.
One of the most interesting factoids I've uncovered has to do with
dodder, the orange viney thing on the left. This plant has no
green pigment and thus doesn't make sugars through
photosynthesis. Instead, it twines around nearby plants, pokes
modified roots into their stems, and sucks them dry. Yum!
Dodder is pretty picky, prefering some plants over others for its
dinner, and it seems to know how to grow toward the tastier
specimens. I spent a summer during college working in this very cool
professor's lab, trying to figure out how dodder decides which
plant to twine around. I didn't make any progress, but I ran
across an article recently mentioning that dodder reacts
to airborne chemicals when determining the suitability of a host
plant --- in essence, smelling its prey.
So, next year when the dodder once again wipes out my carrots, I will
at least know that it's a pretty darn cool weed.... (Four and a
half chapters down, two and a half to go!)
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About us: Anna Hess and Mark Hamilton spent over a decade living self-sufficiently in the mountains of Virginia before moving north to start over from scratch in the foothills of Ohio. They've experimented with permaculture, no-till gardening, trailersteading, home-based microbusinesses and much more, writing about their adventures in both blogs and books.
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