Seeds forum: colored light for different seeds?

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Name: Caroline Scott
Calgary (Zone 4a)
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CarolineScott
Jan 10, 2014 7:21 AM CST
The Stokes catalogue under Impatiens suggests covering the tray with blue plastic.
And somewhere I came across strawberry seed needing red light?

What light requirements have you come across?
Name: Arlene
Grantville, GA (Zone 8a)
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abhege
Jan 10, 2014 7:22 AM CST
Wow, that's news to me, but then again, so was growing strawberries from seed! Hilarious!
Name: Gerry Donahue
Pleasant Lake, IN (Zone 5b)
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profesora
Jan 10, 2014 7:51 AM CST
You should conduct a scientific experiment:
One container as directed, with the plastic color covering, the other container without the covering.

Make observations, document them, write your findings, and report them.


Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
Jan 10, 2014 11:41 AM CST
Caroline I found a page that touches on the subject:

http://www.gardenguides.com/131852-plants-growing-under-diff...

Essentially what it is saying is that blue light encourages leaf growth and red light encourages flowering.
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Unknown

Name: woofie
NE WA (Zone 5a)
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woofie
Jan 10, 2014 12:19 PM CST
Aha! Perhaps that's why I've seen recommendations for using red mulch fabric around tomatoes?
Confidence is that feeling you have right before you do something really stupid.
Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
Jan 10, 2014 1:14 PM CST
They actually sell red plastic to put around tomato bushes!

http://www.shovelandhoe.com/Tomato_Greenhouse_p/2051.htm
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Name: Karen
Cincinnati, Oh (Zone 6a)
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kqcrna
Jan 10, 2014 2:18 PM CST

Moderator

I think Caroline's referring to color spectrum to facilitate seed germination, as opposed to overall plant growth and blooming

See "greenhouse"
http://www.stokeseeds.com/product.aspx?ProductID=38349&Categ...

Joanne had actually posted this is in the past. It seemed to work well for me, but, it wasn't a controlled experiment. I just tried covering a flat with blue plastic
Thumb of 2014-01-10/kqcrna/dd49e3

Karen

Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
Jan 10, 2014 4:49 PM CST
Considering seed coats, I do not think that a specific color spectrum would have any influence on seed coat cracking. Once the seed has cracked, then yes.
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Unknown

Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
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CarolineScott
Jan 11, 2014 5:05 PM CST
I had not heard of it for seed germination before.
Thanks for the comments.
Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
Jan 11, 2014 5:17 PM CST
I would think it would actually help with seedling growth since what you want at first is robust stems and leaves. I'm definitely going to try it on some of my seeds I'll be starting in a few weeks. I had heard of this before but never in conjunction with seedlings. I might even try the red shift to see if I can get stubborn plants to bloom sooner.
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Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
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CarolineScott
Jan 11, 2014 5:20 PM CST
I think that it is worth a try.
If I had lots of seeds then could do the experiment.
But will try the few impatiens seeds in blue plastic.
Name: Greene
Savannah, GA (Sunset 28) (Zone 8b)
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greene
Jan 11, 2014 5:27 PM CST
My daughter recommended this odd colored light for growing plants indoors. http://www.amazon.com/gp/product/B008A698KO/ref=oh_details_o...
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~~"Leaf of Faith"
Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
Jan 11, 2014 7:17 PM CST
I did a little searching and came up with ScotchBlue 24 in. x 90 ft. Painter's Tape and Film that looks like it might work well especially for odd shaped containers and it's reasonably priced. It's not as dark when you unroll it.

http://www.homedepot.com/p/ScotchBlue-24-in-x-90-ft-Painter-...

"We were all humans until race disconnected us, religion separated us, politics divided us and wealth classified us."

Unknown

Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
Peonies Plant Lover: Loves 'em all! Garden Ideas: Master Level
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CarolineScott
Jan 11, 2014 11:55 PM CST
Those are both good suggestions--but since I only have a few seeds---
I think that I will use one of those blue recycle bags.
If I can find an old incandescent bulb ---I'll use that for the red end for strawberry seeds.
Name: Anne
Summerville, SC (Zone 8a)
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Xeramtheum
Jan 12, 2014 9:09 AM CST
It just occurred to me you could probably find some colored cellophane bags at the dollar stores.
"We were all humans until race disconnected us, religion separated us, politics divided us and wealth classified us."

Unknown

Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
Peonies Plant Lover: Loves 'em all! Garden Ideas: Master Level
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CarolineScott
Jan 12, 2014 10:19 AM CST
Yes, I will check them out.
I get many goodies for gardening at "$1" stores.
Name: Evelyn
Northern CA Sierra foothills -
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evelyninthegarden
Jan 12, 2014 7:07 PM CST
Our recycle bags are clear blue, and we always have extras. Now there is a use for them. Smiling Thumbs up
Name: Karen
Cincinnati, Oh (Zone 6a)
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kqcrna
Jan 12, 2014 7:21 PM CST

Moderator

If you see my photo above, the blue plastic that I used to cover the flat was the plastic bag that our newspaper is delivered in. Smiling I can't think of a store that uses blue plastic bags but there probably are some.

Also, there are cheap plastic food storage containers that have blue lids too.
http://www.glad.com/food-storage/containers/

Karen

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