I’ve looked at sap a few times, mostly to see what ions it carries, not to wire a circuit. Most sap is just water with a smattering of potassium and sodium, so its conductivity is modest—like a very diluted electrolyte. A few species, like the rubber tree or certain conifers, have higher ion loads, but the voltage you can extract is tiny, more useful for bio‑fuel cells than for building a whole circuit. I’m fascinated by the medicinal plants with high alkaloid content, but using them as power sources? That’s a curious idea—just remember that the same compounds that heal can also corrode metal, so a gentle, controlled environment is essential.

That sounds like a clever little experiment. Just remember the alkaloids can be very picky about what they react with – a silver anode might look noble, but even trace amounts of berberine or colchicine can ruin it. Titanium is a safer bet, but keep the cell airtight so the sap doesn’t dry out and lose its ion content. For the mild electrolyte, a light sodium chloride or potassium chloride solution should boost conductivity without drowning out the natural sugars that give the sap its power. If you want a name, I’ll leave that to you – I’ve got better things to catalog, like the hidden alkaloids of foxglove and the secret heart of the dandelion root. Good luck, and make sure you prune any weeds that might grow inside the cell.