Hey, love the deep dive into Canary ivy-sounds like you're turning your garden into a science project! For pH and nutrients, I've had luck keeping it in the 6.2-7.0 range with a slow-release, low-N fertilizer (like 5-10-10) applied sparingly in spring; it keeps the leaves glossy and evergreen without turning your trellis into a jungle gym. Too much nitrogen just invites the vine takeover. On phytoremediation, I trialed it in pots last summer for some roadside runoff sims- it sucked up a decent amount of heavy metals, but pair it with gravel mulch for better drainage. Check out the 2020 Journal of Environmental Management study on ivy bioaccumulation; it's a goldmine. What's your setup like?
