Free-growing declarations: what the paperwork claims vs what surveys verify

A free-growing declaration is the document a licensee submits to say a cutblock has cleared its last regulatory hurdle: the regenerating stand has reached enough height and density, relative to competing vegetation, that it's considered established without further tending. It's the signature that closes out the silviculture obligation on that block. Once it's filed and accepted, the licensee's reforestation liability on that unit is largely done.

The problem for the person reviewing that declaration is that it's a claim, not a measurement you watched happen. Someone walked a plot sample, or didn't, and reported numbers that may or may not reflect the whole block. That's exactly what a stocking survey exists to check.

What the declaration says

A free-growing declaration attests to a specific set of conditions tied to the stocking standards unit (SSU) prescription for that block: minimum well-spaced stems per hectare, acceptable species composition, and a height threshold that puts the crop trees above the brush, grass, or deciduous competition that could otherwise suppress them. It also certifies the stand got there inside the regulatory free-growing window, usually measured in years since harvest or since the last silviculture treatment.

None of that is self-evident from a desktop review. A reviewer can read the declared stocking numbers, but confirming them means a field crew re-running a sample survey on the same block, or at minimum spot-checking a subset of plots against the submitted data. That's the audit cost that makes these files pile up: every declaration is a potential field trip.

Silviculture survey vs free-growing assessment

These two terms get used loosely and they're not the same check. A silviculture survey, sometimes called a regeneration survey, happens earlier in the stand's life. It's asking whether enough seedlings are in the ground and surviving, usually one to a few years after planting. It's a density and survival question.

A free-growing assessment happens later and asks a harder question: are those established seedlings actually winning against the competing brush, or are they stocked but stagnant? A block can pass a regeneration survey with good stem counts and still fail free-growing years later because alder or fireweed got ahead of the conifers. The free-growing check looks at height differential, not just presence. That's why a licensee can file a declaration based on a survey that technically meets the stocking standard on paper while a field audit finds suppressed leaders under a brush canopy that the plot sample happened to miss.

For stocking standards compliance work, this distinction matters because it changes what a reviewer is verifying. A silviculture survey review is a density and species-mix check. A free-growing review is a competition and vigor check, and it's the one with the field-truth gap, because vegetation competition varies block to block in ways a handful of sample plots can understate.

The boundary question that sits underneath the stocking math

Here's the part that gets skipped. Before any of the stocking numbers mean anything, the reviewer has to know the free-growing claim is being measured against the right area. If the actual harvested boundary doesn't match the cutblock as permitted, the stocking survey plots might be sitting inside ground that was never authorized, or missing a strip of overcut that was never surveyed at all because it doesn't show up on the cutting permit.

That's a boundary conformance question, and it's usually not the one a silviculture crew is trained or scoped to answer. It's a separate layer: did the cut match the permit before anyone measured what's regenerating on it. Harvest Compliance runs that comparison first, flagging overcut area and riparian buffer incursions as a reviewable list built from high-res change detection, so the question of where the field crew should be standing gets answered before the stocking survey gets scheduled.

If a file's free-growing declaration looks clean but the boundary hasn't been checked against the permit, that's the gap worth closing first.