Humanure -- Safe Use

A simple bucket system, or a two-bin arrangement where one bin fills while the other processes undisturbed, is the standard low-technology approach here as anywhere. Waste is collected in a covered container, and a generous layer of dry cover material is added after every single use without exception. Once a bin or bucket is full, it's set aside to process while a second one fills, giving the first bin its entire processing period, however long that genuinely needs to be, before it's ever touched again.

Cover material that suits this climate well includes dried alpine meadow hay, straw, or dry soil, all reasonably available here (see Chapter 6). The cover layer does three jobs at once: it controls odour, absorbs excess moisture, and adds carbon that balances the nitrogen-rich material underneath it.

This is the single most important thing to understand about humanure in this climate, and it needs to be stated plainly and taken seriously. Pathogen die-off depends on a pile reaching and holding thermophilic temperature, roughly 55-65°C, for a sustained period. A cold-winter climate at least offers a genuine, if short, warm season either side of its freeze, a real stretch where a pile can work steadily once it's active. This zone doesn't reliably get that. The daily freeze-thaw cycle described in full in Chapter 11 means a pile can freeze solid overnight and only partially warm through a few hours of midday sun before freezing again, repeated day after day, even during the "active" part of the year.

That constant interruption is genuinely different from, and arguably worse than, a single long seasonal freeze. It means a pile here may never sustain thermophilic heat for as long a stretch as a pile in a climate with a real, if short, continuous warm season, and calendar time spent "active" can be misleading if much of it was actually a repeating cycle of brief warming followed by a hard overnight reset.

Because of this, this zone should be treated as needing one of the longest, most conservative processing minimums anywhere in this series, arguably exceeding even a cool or boreal climate's guidance. Track genuinely sustained active periods, stretches where the pile has held real warmth through a run of days and nights, not just calendar months elapsed and not occasional warm days that got interrupted by the next hard frost. When a sustained stretch is broken by a freeze, treat that as a genuine slowdown in progress, not simply a pause that resumes exactly where it left off. When in doubt, wait considerably longer.

• Never on or near root vegetables -- direct contact risk is too high regardless of processing time.
• Never on leafy greens eaten raw -- splash contamination and surface contact make this a genuine risk.
• Fine for fruit trees and ornamentals -- where there's no direct contact with edible plant surfaces.
• Fine for soil-building beds well after the conservative minimum -- fully cycled-through compost dug into a bed that then grows a further season of other crops before anything is eaten from it.
• Never used fresh, under any circumstance -- and never on the strength of calendar time alone here, count genuinely sustained active periods, not months merely elapsed.