lapinerobert wrote:When you refer to Titicaca are you refering to floating gardens or some other form of waterwork?
lapinerobert wrote: What are you using as a black mulch?
I have traditional raised beds but in addition have a set of three that I have southernly sloped @15 degrees to boost solar gain.
And no amount of thermal mass can passively boost temperatures above the long term average.
know a grower close to me who grows salad greens all year round in an unheated stand-alone greenhouse with no thermal mass additions on the inside or outside.
I do have a hundred gallon water resevoir in the green house that is used for hydroponics in the summer and a heat sink in the winter with a thermosiphon set up.
Fortunately my area has a 300 day of sunshine average.
Joel Hollingsworth wrote:
These are perhaps under-publicized. ..
Once there was water in them, it was apparent that they did a good job of preventing frost. At which point the size of the settlements made much more sense:
Thus at some point of northern latitude / northern climate, the intensity and hours of available sunshine is simply insufficient to sustain minimum levels of light and minimum overnight temperatures needed for plants to remain productive.
Jennifer Smith "listenstohorses" wrote:
What were they?
paul wheaton wrote: I think having a higher annual average is what I was proposing.