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Bloom time advances one day for 15 miles south?

Posted by cynthiaquilts 5a (My Page) on
Tue, May 29, 07 at 9:57

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.


Follow-Up Postings:

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RE: Bloom time advances one day for 15 miles south?

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.


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RE: Bloom time advances one day for 15 miles south?

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.


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RE: Bloom time advances one day for 15 miles south?

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.


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RE: Bloom time advances one day for 15 miles south?

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!


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