StarTalk Radio Homesteading on the Moon with Kevin Espiritu
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May 1, 2026 
Kevin Espiritu, Gardening YouTuber and founder of Epic Gardening, who built a third-acre homestead from small-space beginnings. He explores backyard homesteading, rainwater and graywater systems, solar and cost trade-offs, hydroponics/aeroponics and vertical farming, growing in lunar regolith and pressurized habitats, aquaponics for closed loops, and a real 90-day self-sufficiency experiment.
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Maximize Yield On A Small Urban Lot
- Use small urban spaces effectively by mixing perennials and annuals to maximize yield on limited land.
- Kevin grows 30 fruit trees and 40–50 annual crops on a third-acre, producing hundreds of pounds of produce per year.
Soil Is A Medium Not The Essential Ingredient
- Plants don't need soil itself but the water, oxygen, and nutrients soil provides; hydroponics supplies those directly.
- Kevin's bucket hydroponics used aeration and dissolved nutrients to support root respiration and fast growth.
Mist Roots Instead Of Drowning Them
- Try aeroponics to reduce root waterlogging: mist roots with nutrient solution rather than submerging them.
- Kevin describes nebulized droplets feeding roots while roots remain mostly in air, improving oxygen access.