Soil heating "spikes" for potted plants

giomanApril 24, 2014

Hi,

There are mnany sources for heating cables so why not soil heater spikes of some sort? I can buy bucket heaters of many types, heaters to warm water in a coffee cup but heat "spikes" to warm or at least keep from freezing the soil in large potted plants outdoors are not on the market anywhere. I had several potted plants including rhododendrons on my deck and several either died or look like they will due to the 2 degree winter this past year. From what I read most should have survived the cold but they didn�t. Perhaps if they had been in the ground instead of pots they would have.

I hope someone has some thoughts on this heat spike idea especially if they know of a source.

Thank you

Keith

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spaceman13(6b)

I have a product called Flex-watt (it is used in radiant heat in floors, and has been bastardised for use in heating reptile enclosures)

I overwintered a Russelia that wound up dying back to 2 stems and the roots. In desperation I wrapped the pot in in a 12" piece of the flex watt, and it recovered and is coming back nicely.

The Flex-Watt itself is relatively inexpensive, but make sure you use a thermostat as the flex-watt can reach as high as 110 degrees F/ 43.3 C

    Bookmark   April 24, 2014 at 2:15PM
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gioman

Thank you spaceman13 for the info. If I can get any kind of a positive reply concerning outdoor use from the Bean Farm, I will give this interesting heat tape a try.

Again, thanks.

keith

    Bookmark   April 25, 2014 at 1:12PM
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gioman

Thank you spaceman13 for the info. If I can get any kind of a positive reply concerning outdoor use from the Bean Farm, I will give this interesting heat tape a try.

Again, thanks.

keith

    Bookmark   April 29, 2014 at 9:23AM
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calistoga_al

I made my own bottom heater from cables made for keeping rain gutters from freezing. You will still need buy a thermostat to maintain the temperature. Al

    Bookmark   April 29, 2014 at 10:38AM
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