Passive Earth · Tree Guardian — back to home

Field results · BC Interior pilot · summer 2026

Same site, same watering cycle. Four weeks in.

30°C stretches, wind, full sun, no shade. Every tree on the same 7-day cycle, including one that stretched to 10 days over a weekend. This page is the running record: it grows as the pilots report.

The four-week comparison

Control tree on a standard surface bag at four weeks with a thinning, yellowing canopyControl — standard bag
Standard-bag control: thinning, yellowing canopy at four weeks.
Tree Guardian tree of the same species at four weeks holding a fuller canopyTree Guardian
Tree Guardian, same species a few metres away: fuller, greener canopy on the identical cycle.
Tree Guardian bur oak with a dense green canopy at four weeksTree Guardian
Tree Guardian bur oak: dense canopy through the same heat.

Our trees are thriving — a Tree Guardian honey locust holding full canopy through the same heat that's thinning the controls. Straight from a phone at the site.

The install, in two minutes — municipal crews at the pilot site.

The control trees, up close — beside ours

Honey locust controls on standard surface watering bags, photographed at four weeks — sparse canopies, yellowing and scorched leaflets. The gallery advances on its own; click any photo to enlarge it. On the left, our Tree Guardian trees from the same site on the identical watering cycle — both galleries advance on their own, side by side.

Tree Guardian honey locust at four weeks holding a full green canopyTree Guardian
Tree Guardian honey locust canopy against the skyTree Guardian
Honey locust branch in full leaf at the pilot siteTree Guardian
New growth along a Tree Guardian honey locustTree Guardian
Branch above the Tree Guardian bag and rodent cageTree Guardian
Healthy leaflets on a honey locust branch, four weeks inTree Guardian
Tree Guardian bur oak — full tree above Okanagan Lake, bag and cage at the baseTree Guardian
Tree Guardian bur oak holding dense canopy through the heatTree Guardian
Bur oak canopy close-up — thick, glossy leaves at four weeksTree Guardian
Tree Guardian bur oak with a dense green canopy at four weeksTree Guardian
Tree Guardian installed on a newly planted oakTree Guardian
Our trees: eleven photos, rotating — Tree Guardian, same site, same 7-day cycle.
Control honey locust with standard watering bag, sparse canopy — full view at golden hourControl — standard bag
Control honey locust, thin yellowing canopy against blue skyControl — standard bag
Control honey locust full view with standard watering bag and stakeControl — standard bag
Control honey locust, sparse crown, full view with bagControl — standard bag
Close-up of yellowing leaflets on a control honey locustControl — standard bag
Close-up of curling, scorched-tip leaves on a control treeControl — standard bag
Close-up of yellowing leaflets and scorched tips against skyControl — standard bag
Control tree branch with sparse yellowing foliage by the stakeControl — standard bag
Control branch close-up, green and yellow leafletsControl — standard bag
Base of control tree: standard watering bag, rodent cage and strapsControl — standard bag
Upper canopy of control tree, sparse leafletsControl — standard bag
The controls: eleven photos, rotating — standard bags, same four weeks.

Where the water actually goes

Surface watering bag draining through a holeControl — standard bag
The status quo, photographed at our pilot site: a surface bag draining through a hole. Two of the standard bags had holes by the second week — the fill drains early, and the tree waits dry until the next visit.
Runoff trail spreading downhill from a surface watering bagControl — standard bag
Observed in our pilot: the runoff trail below a surface bag — water spreading downhill instead of reaching the root ball.
Tree Guardian installed on a newly planted oakTree Guardian
Tree Guardian on the same site: sealed wicking delivery to the root ball, 7–10 days per fill.

What's measured next

These photos are observational. The measured comparison — survival at 12 and 24 months, continuous soil moisture, visit cadence — comes from the instrumented pilots: the municipal install (summer 2026) and a ten-tree UBC + University Neighbourhoods Association science pilot at Hampton Place with postdoctoral monitoring, now pending approval. AGTIV REACH mycorrhizal fungi supplied for trials · Patent pending · Supported by Foresight Canada.

Partner branding withheld pending publicity clearance. Results will be posted here as they come in.

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