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Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

lowtechmagazine.com

41–50 of 103 posts

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#41

Where I grew up (41.3 deg N, on the Atlantic coast) I was always amazed by our neighbor, who would bury his ~15 foot tall fig tree every year to protect it from freezing. For some reason in my child mind it seemed to defy the laws of nature, though of course it was quite the opposite!

Where I live in Eastern Europe (44°26′7″), we have acclimatized fig trees. And we have temperatures as low as -20C or even -25C (-4 and -13 Fahrenheit).

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#42
post #30

"Training small citrus plants was key to extending their cultivation across all regions of the Black Sea coast, where until then it had been impossible. This was achieved by pruning and guiding citrus plants into a creeping form, which reduced their height to a mere 25 cm." People complain about cubicle farms, but there's so much we can do to train workers to be productive in them, if we start them young enough.

> pruning

Do IT workers really need legs?

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#43

Climate-controlled cultivation will likely become a necessity for food production as climate change intensifies. Spain, South Africa, many Middle Eastern and other countries are already heavily reliant on greenhouses. Also given that megadroughts, floods, and hurricanes are likely to be the new normal, sufficient capacities of solar-powered desalination will be important to sustain food production levels. My main imm…

> Climate-controlled cultivation will likely become a necessity for food production as climate change intensifies

This is interesting, as massive greenhouse are seen in fiction as the only way to grow crop in hostile environments: Mars, the Moon, Space.

Who knew we would be making our own planet a hostile environment.

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#44
post #11

I’ve often thought about the fact that most food into places like Barrow, Alaska is flown in, and wondered whether it would be practical to set up local infrastructure like this to grow food locally (with “practical” meaning “the CapEx of doing so would be repaid in logistical OpEx saved over a small number of years.”)

I feel like with the advance of renewable energy sources and the lowering prices on things like solar panels, it might become quite plausible for places like Barrow to start growing their food with these methods, utilising zero fossil fuels (or close to zero.) I've seen videos of people with pretty sprawling underground "bunkers" set up for growing fruits and vegetables. They require tons of energy, of course, but if done on a governmental scale, I'm sure it can be pulled off. Both to provide more varied food options and to achieve self-sustenance as well as give an option for a worst case scenario where deliveries are impossible.

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#45

Where I grew up (41.3 deg N, on the Atlantic coast) I was always amazed by our neighbor, who would bury his ~15 foot tall fig tree every year to protect it from freezing. For some reason in my child mind it seemed to defy the laws of nature, though of course it was quite the opposite!

When I lived in Toronto, my next door neighbour Luigi did that with a fig tree he had brought with him from his native Sicily some decades ago. Every year it bore a couple dozen figs for him. The whole family was a living stereotype in pretty much every way, but his gardening technique definitely bore fruit.

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#46
post #11

I’ve often thought about the fact that most food into places like Barrow, Alaska is flown in, and wondered whether it would be practical to set up local infrastructure like this to grow food locally (with “practical” meaning “the CapEx of doing so would be repaid in logistical OpEx saved over a small number of years.”)

The government investigated that back during WWII. Unfortunately, the north slope is one of the foggiest, darkest places on earth. Additionally, the soil is thin and permafrost runs nearly right up to the surface. The local environment provides literally nothing to work with, so it was considered uneconomical.

Might work in other places though.

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#47
post #13

I grow a few things in a (relatively small) suburban garden in London. My experience so far with fruit normally associated with warmer climates: Grapes - grow very well outside, lots of tasty fruit, sensitive to mildew Figs - grow well outside, fast, but not much fruit yet Citrus (lemon, lime and kafir lime) - Any frost is damaging, can only grow in pots and bring in during winter. Grows slowly and doesn't produce mu…

You can do a lot with an apartment balcony, too. Even though it's space-limited, the warmth of the building will help.

Though not inappropriate for the climate, when I lived in Ohio, I grew tomatoes, corn, and pumpkins in containers on my balcony. The pumpkin vines grew into the adjacent tree, and in the fall, there were small orange pumpkins hanging from the tree limbs, like fruit.

In Texas, I grew all kinds of citrus trees in containers on my balcony, as well as watermelons. The trick with watermelons is to hang the fruit inside panty hose so they don't get damaged. It made them wonderfully round.

Again, not a climatic challenge, since they say, "You can plant a broomstick and grow brooms in Houston."

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#48
post #13

I grow a few things in a (relatively small) suburban garden in London. My experience so far with fruit normally associated with warmer climates: Grapes - grow very well outside, lots of tasty fruit, sensitive to mildew Figs - grow well outside, fast, but not much fruit yet Citrus (lemon, lime and kafir lime) - Any frost is damaging, can only grow in pots and bring in during winter. Grows slowly and doesn't produce mu…

You can do a lot with an apartment balcony, too. Even though it's space-limited, the warmth of the building will help. Though not inappropriate for the climate, when I lived in Ohio, I grew tomatoes, corn, and pumpkins in containers on my balcony. The pumpkin vines grew into the adjacent tree, and in the fall, there were small orange pumpkins hanging from the tree limbs, like fruit. In Texas, I grew all kinds of citr…

> In Texas, I grew all kinds of citrus trees in containers on my balcony

The Hanging Gardens were given their name because of the trees growing above the ground ("hanging").

What was considered a wonder of the world is now something you can just do for fun.

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#49

Where I grew up (41.3 deg N, on the Atlantic coast) I was always amazed by our neighbor, who would bury his ~15 foot tall fig tree every year to protect it from freezing. For some reason in my child mind it seemed to defy the laws of nature, though of course it was quite the opposite!

I couldn't visualize how this works so had to look it up https://www.instructables.com/id/Bury-a-Fig-Tree/

Re: Fruit Trenches: Cultivating Subtropical Plants in Freezing Temperatures

#50

I oddly really want to do this, but I live in California so that would be quite pointless and most likely detrimental.

The Forestiere Underground Gardens in Frenso are over 100 years old. The trees grow in wells connected by shallow tunnels. It does look more like a Tatooine underground house than a garden, but still neat. It's open for tours in normal times:

http://www.undergroundgardens.com/

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