Materials matter: copper resists corrosion and conducts well

https://medium.com/@cechinpqln/from-seed-to-harvest-electroculture-gardening-through-the-seasons-2e21b83cdf90

Materials matter: copper resists corrosion and conducts well, while galvanized steel is cheaper but heavier; choose durable wood or bamboo for masts, and avoid treated lumber that may leach chemicals.