Help!

Countryladiesgardens · Tue Mar 03, 2015 12:05 am

I planted 2 flats of seeds today in our greenhouse. I have them on heatmats and put a cover on them. It was a nice day out so the sun was shining on the greenhouse. The soil temperature was 80C and I hope I didn't kill any seeds..do you think they will be alright??

Thanks!!

Kim

applestar · Tue Mar 03, 2015 5:20 am

Oh dear, it doesn't look good. According to this report,

Temperatures of 50 C and above were lethal for seeds of all species.

https://www.bioone.org/doi/abs/10.1614/WS-04-178.1

...sorry...

rainbowgardener · Tue Mar 03, 2015 9:55 am

are you sure you meant 80 degrees C (Celsius)? That would be 176 degrees F ... you could cook at that temperature.

If you meant 80 deg F, everything will be fine.

PS... I thought it was funny. After I hit submit and it went back to the regular page, the ad at the bottom (which changes) was a picture of a fried egg!

176 F is probably not enough to fry an egg, but closing in on it.

Countryladiesgardens · Tue Mar 03, 2015 10:18 am

Sorry I meant 80F! Lol..ahh thanks for the advice ladies! I will take off the covers this afternoon. Just having a morning coffee right now, hope you both have a lovely day!

Kim

applestar · Tue Mar 03, 2015 10:28 am

Oh whew! I'm GLAD that was a mistake!

Countryladiesgardens · Tue Mar 03, 2015 10:30 am

Ha ha ha! Me too! Dur

How are your plants doing so far applestar?

Susan W · Tue Mar 03, 2015 11:01 am

I would suggest starting the seeds inside with better temp controls. A greenhouse can heat up even on a chilly day, and temps all over the map. My mini greenhouse will be 80 on a low 30's day if sun out even half. Once the babies are up, introduce slowly to greenhouse, and you may need to shade them for awhile.

imafan26 · Tue Mar 03, 2015 11:04 am

If they were pepper or tomato seeds they should do fine.

Countryladiesgardens · Tue Mar 03, 2015 12:05 pm

Thank you all for the advice, they are flowers, and am sure they will do alright if I keep the covers off in the afternoon.

Kim

Countryladiesgardens · Wed Mar 04, 2015 4:22 pm

Alright guys.. looks like I took the covers off too late in the day and now when I checked on the temp it was 41C. Do you think I should start over?

Thanks!

rainbowgardener · Thu Mar 05, 2015 8:26 am

41 C = 105 deg F. Yup, start over.

Here's a little chart of germination percentage at different temperatures:

https://tomclothier.hort.net/page11.html

it says tomatoes and peppers have a zero percent germination rate at 104 deg F. Sorry...

Maybe don't use those covers?

Countryladiesgardens · Thu Mar 05, 2015 11:12 am

Hi! Just an update, turns out it was 38C and they are not peppers and tomatoes. They are flower seeds. I have since took off the covers, lets hope for the best!

Thanks for all of your replies!

Countryladiesgardens · Sat Mar 07, 2015 12:58 pm

Good news! Some of my flower seeds have started to germinate! Weeeee!

Countryladiesgardens · Wed Mar 11, 2015 9:06 pm

Hey folks!

So the flower seeds that I thought I toasted are doing awesome! Some even sprouted sooner than expected! Thanks to all who had great suggestions!

Countryladiesgardens · Mon Apr 06, 2015 10:20 am

Another update!

Things are going great in the greenhouse!