Last updated: April 22. 2014 10:18AM - 718 Views
Steve Roark Tri-State Outside



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Our forefathers paid a lot more attention to natural events than we do now. They had no radio, TV or newspaper to provide weather trends, so they looked to nature to tell them when to plant beans or when to strip hickory bark for chair bottoms.


One thing they watched for was when plants bloomed or leafed out.


For instance, when forsythia blooms it’s a good time to plant beets, lettuce, onions, spinach, peas and radish.


When the service berry tree blooms (also called “sarvis”) you can plant broccoli, cauliflower and green beans.


When dogwoods reach full bloom, it’s okay to plant corn, squash, zucchini and melons.


And when the peony blooms, plant eggplant, tomatoes, lima beans and watermelon.


I’ve also heard of planting corn when white oak leaves are as big as a squirrel’s ear.


This system may give good guidelines, but it’s not foolproof. Our springs tends to have roller coaster temperature fluctuations, with balmy warm ups followed by cold snaps.


Probably the best way to know when to plant vegetables is scientifically, using a soil thermometer. Germination of seeds depends heavily upon soil temperature, so it’s a good indicator of when to plant.


Temperatures are in degrees Fahrenheit. Soil thermometers are available from mail order garden catalogs or garden centers.


Here is a list of garden plants and the soil temperature range in which they should be planted:


Beans, 60-85; beets, 50-85; cabbage,: 45-95; lettuce, 40-80; onions, 50-95; peas, 40-75; pepper, 65-95; pumpkin, 70-90; radish, 45-95; spinach, 45-75; squash, 70-95; tomatoes, 60-85; turnips, 60-105; and watermelon, 70-95.


For more information on gardening, contact your county extension agent.


Steve Roark is the Area Forester in Tazewell, Tenn. for the Tennessee Department of Agriculture, Forestry Division.

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