germination temperature in relation to outdoor temp

chueh(7B)February 9, 2014

Here we have big contrast of morning and night temperature difference, in average about 20 degree difference. When the direction on the package says "germination: 68," do I sow the seeds outdoors when the highest or lowest temperature reaches to 68, or I will have to find a mid point?


Thank you for reporting this comment. Undo
digdirt2(6b-7a No.Cent. AR HZ8 Sun-35)

It is referring to the soil temperature, not air temps. Air temps are not relevant to germination so you have to measure the soil temp. If germinating indoors then the soil needs to be maintained at or near 68 and if direct seeding outdoors then the soil temp needs to be 68.

Soil temps don't change as quickly as air temps do so once the soil temp reaches 68 outside it would take several days of colder temps for it to fall.

Hope this helps.


    Bookmark   February 9, 2014 at 1:54PM
Thank you for reporting this comment. Undo

yep, definitely, your answer helps. That clears out my confusion. Thnaks

    Bookmark   February 9, 2014 at 4:07PM
Sign Up to comment
More Discussions
starting seeds in cold frame
Hi all, I am in the process of building a cold frame...
Potting up seedlings ?
I have started my seeds in 'organic seed starting mix'...
Germinating Begonias, Imps, & Pets.......
Been propagating from seed for 5-6 years now.... Surface...
Also why are my seedings growing towards the window instead of up?
I planted some morning glory's and sensitive plants. I...
Growing without heat mats
So I have only been growing from seed for a few years...
© 2015 Houzz Inc. Houzz® The new way to design your home™