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Kevin Espiritu

๐Ÿ‘ค Speaker
616 total appearances

Appearances Over Time

Podcast Appearances

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

So these are methods of growing where either the water or air does the work instead of what?

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Instead of soil, right?

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Which is where pretty much every plant is.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Neither of these are soil-based plants.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

ways to grow.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Um, and so if you, it's kind of, it's kind of weird because if you think about it, you think, of course a plant needs soil to grow.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

And I might even argue as a gardener, that is kind of true.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

I do prefer it.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

But what, what a plant really needs is what's in the soil or what the soil is providing.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

And the soil is almost a medium for oxygen, water and nutrients.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Um, and so when you're growing in a hydroponic environment, like my cucumbers, um,

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Well, there's no soil.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

So the plant, you start a seed in a little growing medium.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

In this case, it was something called rockwool, kind of like spun molten rock in this little fibrous cube.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

You put a cucumber seed in that.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

It grows up.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

The plant, the tissue grows up, but the roots grow down.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

And those roots grow down and hit the water.

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

That water does have to be oxygenated, which is crazy because you think, well, you know, plants are taking in CO2 and releasing oxygen, right?

StarTalk Radio
Homesteading on the Moon with Kevin Espiritu

Roots, though, respire.