Square Foot Gardening Forum
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Plan for the shadow! I22gcj10Plan for the shadow! 14dhcg10

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Plan for the shadow!

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Plan for the shadow! Empty Plan for the shadow!

Post  cygnus on 1/16/2015, 10:25 am

Hi, everybody!  I think i'm nerding out here...Here's a couple of online calculators to help you determine how far apart to space your SFG's based on the shadow from your north-sided SFG trellis, for a given location/month/day.

NOAA Solar Calculator:  http://www.esrl.noaa.gov/gmd/grad/solcalc/

Find the "solar noon" and "Az/El (in °)" values for your location, then input those numbers into:

Shadow Length Calculator    http://www.wsanford.com/~wsanford/shadow_length.html

Or,  you can use the tan function on a scientific calculator:

     Trellis Height
   (Az/El in °) (tan)

Happy Gardening!
cygnus
cygnus

Male Posts : 14
Join date : 2015-01-09
Location : Southern Illinois, 6b

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Post  AtlantaMarie on 1/17/2015, 9:01 am

Huh....  Never seen that before...  Interesting...

I'm in a good place - my garden is in the NW corner of our back yard.  I have trellising on the west and north sides.  I'm also planning to put it on the south side since there's nothing beyond that fence-line except my path to the rest of the back yard.

Thanks for that info!
AtlantaMarie
AtlantaMarie

Certified SFG Instructor

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Join date : 2014-03-18
Age : 57
Location : Buford, GA - Zones 7B/8A

http://www.defensivespecialties.com

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Post  has55 on 1/19/2015, 2:51 am

Never seen this either. good link.
has55
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Posts : 2231
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Location : Denton, tx

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Post  slimbolen99 on 1/19/2015, 8:38 am

Very nice!  Thanks for sharing.
slimbolen99
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