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- From: "Doreen Howard" <gardendiva@charter.net>
- To: "gardenwriters-on-gardening" <gwl-g@lists.ibiblio.org>
- Subject: [gwl-g] Phenology Notes
- Date: Tue, 4 Jan 2005 14:44:59 -0600
This was sent to another listserv to which I subscribe, but I thought it would be of interest to other gardeners.
Doreen Howard
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Did you know that if you hear songbirds singing, the temperature is above 25 degrees?
Phenology links (below)
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Some of the important things gardening phenologists keep track of are the dates of the first and last frosts, when the ground freezes and thaws, the best time to hunt morel mushrooms, the planting and blooming of herbaceous and woody landscape plants and the emergence of insect pests. I'm sure you've heard the saying "plant corn when oak leaves are the size of a squirrel's ear". We all know that planting corn has nothing to do with oak leaves or squirrel's ears but over time, farmers have learned that when oak leaves have reached this size, the soil is warm enough for corn seed to germinate without rotting in the soil. This holds true for all warm-season annual plants.
Crabgrass, the bane of most gardeners, germinates when the soil temperature at 4" stabilizes at 55°F. Although it is difficult to
correlate soil activities with ambient temperature, this soil temperature correlates roughly with when the forsythia is in bloom. This is important to know if you plan to apply an herbicide to prevent crabgrass seed from germinating. Too early or late an application will miss the window of opportunity and you're left with only mechanical tools (cultivation) with which to control this weed.
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Karen Delahaut, UW Extension
http://wiscinfo.doit.wisc.edu/arboretum/arbnews/phenology.htm
http://www.google.com/search?hl=en&q=%2Bphenology+%2Bwisconsin
-
[gwl-g] Phenology Notes,
Doreen Howard, 01/04/2005
- <Possible follow-up(s)>
- Re: [gwl-g] Phenology Notes, Hamptongar, 01/04/2005
-
Re: [gwl-g] Phenology Notes,
KTCopsey, 01/04/2005
- RE: [gwl-g] Phenology Notes, Fran Gustman, 01/04/2005
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