Bloom time advances one day for 15 miles south?

cynthiaquiltsMay 29, 2007

My husband insists that the bloom time for plants advances one day for every 15 miles south of Chicago you travel. Does anyone have any information on this or is this a myth? He says that he heard this theory was endorsed by the owner of Klehm's Nursery which used to be located in Arlington Heights. I would like to find some source to confirm or refute this claim.

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anya_101(z5b central,IL)

Well, I do know for myself, that every two hours either north or south is around or equal to, 2 weeks difference from where I am at. But that is with almost anything such as when mushrooms appear, blooming times for certain plants, when deer are in rut in the fall or when fish are spawning in the spring.
So no, does not sound extreme for me to hear that.

    Bookmark   May 29, 2007 at 5:15PM
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I've never heard that rigid formula, but I know that suburbs such as Olympia Fields & Chicago Hts are about a week ahead of the Northwest suburbs.

    Bookmark   June 1, 2007 at 7:16PM
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wayne_5 zone 6a Central Indiana

I've heard of that formula many years ago and agree with it. Remember though, that we are talking about simular elevation and no coastal or lake effects.

    Bookmark   June 9, 2007 at 7:49PM
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I live in 6b/7a. So we can check this out. Tell me some of the plants you have and I will match with the plants in my yard. We'll see how far away we are in miles and calculate!

    Bookmark   June 20, 2007 at 6:03PM
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