|A field of goldenrod on my land in Minnesota --|
haven for many butterflies & other insects
But the fact is, goldenrod pollen is not spread by the wind at all. This is why weather reports that include a pollen count never even mention goldenrod as a source.
|A Goldenrod flower|
|Ragweed plant in full bloom|
Ragweed is not particular about habitat, and will grow just about anywhere. The plant in this photo grew next to my compost pile, so it got to be over 6 feet tall from all that rich chicken manure. Along the road you might see flowering ragweed only about a foot high, eking out an existence in the hard-packed gravel on the shoulder. But once you learn to recognize it, you'll see it growing just about everywhere.
(Well, maybe not in the high desert -- but it crops up in irrigated areas like Las Vegas. In fact, according to The 30 Worst Cities for Ragweed, Las Vegas ranks #2. The top city on the list is Phoenix, Arizona.)
The stuff is very easy to pull up, so if you learn to to recognize it before it pollens out, you can at least eliminate it from your garden. But with all the acres and acres of wild areas where it can flourish, you will probably have to wait until frost kills the plants before your "hay fever" finally goes away for the season. Just don't blame your misery on the innocent goldenrod!
|Typical distribution of ragweed pollen in|
the USA in September