Allotment Gardening Advice Help Chat

Growing => General Gardening => Topic started by: mushroom on November 17, 2007, 17:55

Title: beware if yer lotty is in a frost pocket!
Post by: mushroom on November 17, 2007, 17:55
I'm near the bottom of a shallow valley - this collects cold air on still nights at this time of year. Out of interest, I put a digital max/min thermometer in the shed. Its external sensor pokes outside, on the end of a 3 metre wire. They're not all that dear, 6 quid I think it cost. There's a sensor built into the device for ambient internal temp. and relative humidity.

External sensor was behind a cool, moist plant pot. Funny thing is, the lowest temp was recorded inside the dry shed, -5.4°C whereas outside, next to the moist pot, it only got to -4.3°C. But the met office station, which presumably isn't in a frost pocket, only hit -3°C . So the external still air temp in the close vicinity must have got to -6°C or better, the point being that was never forecast.

[geek mode=off]

I was wondering why the tips of some plants were turning brown, and all my basil died at once back in october  :? this is the most likely reason... we had a few still clear nights, but none with (reported or forecast) frost.
Title: Re: beware if yer lotty is in a frost pocket!
Post by: Selkie on November 17, 2007, 17:59
Quote from: "mushroom"

[geek mode=off]



 :lol:
Title: beware if yer lotty is in a frost pocket!
Post by: WG. on November 17, 2007, 18:02
Basil dies off well above freezing point.
Title: beware if yer lotty is in a frost pocket!
Post by: gobs on November 17, 2007, 18:02
geek is on right now, actually, I think :wink:
Title: Re: beware if yer lotty is in a frost pocket!
Post by: mushroom on November 17, 2007, 18:03
Quote from: "rosemarycallsthegoddess"
Quote from: "mushroom"

[geek mode=off]



 :lol:


yeah, sometimes I can't find the switch. Can you tell?  :oops:  :oops:  :lol:
Title: beware if yer lotty is in a frost pocket!
Post by: Selkie on November 17, 2007, 18:04
oh mushroom u made me laugh out loud then, we wouldn't have you any other way :wink:
Title: beware if yer lotty is in a frost pocket!
Post by: mushroom on November 17, 2007, 18:05
Quote from: "WG."
Basil dies off well above freezing point.


really? I thought it was ok to just above freezing... do you know the temp it dies off at?

cheers