The weather has been unusually harsh in Toronto over the last two weeks.  We have had temperatures down below -23ºC (-10ºF) which really challenges the Passive Urban Greenhaus design prototype.  We are collecting a lot of great data from our 15 data monitors in the prototype.  The good news is that only on the most extreme nights did the temperature dip into the frost range, but the plants in their cozy beds all came through with flying colours (or at least green and reds).  In fact a few of the arugula started to flower in the middle of February before we pinched the flowers off (pictures below).

We are still pushing the prototype to the extreme, operating under these harsh conditions without any backup heating at all.  Only passive solar heat storage to keep the growing conditions above winter.  Not the best idea if you are growing for crops as one extremely cold night could wipe out a lot of plants, but the only way to really test the performance of the greenhouse.

Creator: 
Sponsor(s): 
Plants Growing
Plants Growing
Plants Growing
Monday, February 16, 2015 - 8:15pm
Lab Member: 
Ian D. Clarke

16 FEBRUARY PASSIVE URBAN GREENHAUS UPDATE

Overview

Monday February 16th, 2015
Plants Growing

The weather has been unusually harsh in Toronto over the last two weeks.  We have had temperatures down below -23ºC (-10ºF) which really challenges the Passive Urban Greenhaus design prototype.  We are collecting a lot of great data from our 15 data monitors in the prototype.  The good news is that only on the most extreme nights did the temperature dip into the frost range, but the plants in their cozy beds all came through with flying colours (or at least green and reds).  In fact a few of the arugula started to flower in the middle of February before we pinched the flowers off (pictures below).

We are still pushing the prototype to the extreme, operating under these harsh conditions without any backup heating at all.  Only passive solar heat storage to keep the growing conditions above winter.  Not the best idea if you are growing for crops as one extremely cold night could wipe out a lot of plants, but the only way to really test the performance of the greenhouse.

Plants GrowingPlants Growing

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