Garden centre and nursery cross-border tax: plants cross a border CFIA controls first

CFIA clears the plants before customs even runs the numbers

The Canadian Food Inspection Agency has the first word on plants and plant products entering from the US. They only answer to a duty rate once they have cleared into Canada. A shipment typically needs an import permit and a phytosanitary certificate confirming the stock is free of regulated pests and disease. CFIA can also inspect the load on arrival. Buying stock from a US wholesale grower means confirming upfront that they can actually meet Canada's import requirements for the specific plant genus and species involved. A shipment that shows up without the right paperwork, or that fails inspection, can be refused entry outright. That turns what looked like a good wholesale price into a total loss, rather than a delayed delivery.

Because permitting and inspection take real time, US plant orders meant for the spring rush need to be placed and cleared well before the season opens. Treat the import timeline as part of your pre-season planning alongside staffing and cash flow. It is not an afterthought once a truck is already scheduled to leave the US side of the border.

Duty and GST still apply once the plants clear inspection

Plant material that genuinely qualifies as US-origin under CUSMA generally enters Canada duty-free, with proper documentation. But origin follows where the stock was actually grown, not simply who invoiced you. A US wholesaler reselling stock grown elsewhere does not automatically confer US origin. The 5 percent GST charged at the border applies regardless of duty status. A registered garden centre recovers it as an input tax credit, provided the shipment names your business as importer of record. That last detail is where credits most often go missing. A shipment cleared under a broker's or supplier's account, rather than yours, is a credit you cannot claim after the fact. Keep the phytosanitary certificate, the import permit, and the customs entry together as one file per shipment. It is the same documentation an auditor or CBSA would ask for if the import is ever reviewed.

Equipment, pots, and growing media are a simpler import than the plants themselves

Not everything a garden centre sources from the US is alive. Equipment is a simpler cross-border import than living plants. Pots, growing media, irrigation parts, and greenhouse equipment skip the CFIA phytosanitary review that live plant material goes through. They clear the border on ordinary customs terms, where origin decides duty status. Canadian counter-tariff surtaxes on select categories like steel have moved more than once since 2025. So a greenhouse frame or steel bench system is worth checking against the current list at the time you buy, rather than assuming last year's answer still holds. GST applies the same way it does to plant shipments, recoverable as an input tax credit under the same importer-of-record rule.

Most garden centres do not need more than this

A typical garden centre or nursery has no US customers and no US employees. Outside the occasional direct purchase from a US grower, that stays true. It generally has no T1135 foreign-reporting requirement either, unless the corporation happens to hold a US investment account of meaningful size. If your situation is more than the ordinary case, that changes the analysis considerably. This might include regular direct importing at volume, a US supplier relationship significant enough to justify its own import program, or plans to sell into the US. It is worth a direct conversation rather than generalizing from a page written for the typical centre.

Selling into the US is genuinely rare for this niche. Plants are heavy, perishable, and subject to the same phytosanitary controls in reverse. So most independent centres never build a meaningful US sales channel at all. If a wholesale relationship supplying US buyers ever becomes real, that conversation starts from CFIA export requirements rather than from a tax form. It is worth having well before the first cross-border order ships.

Buying occasionally from a US grower is usually a sourcing decision, not a tax strategy. The real work is making sure CFIA paperwork and importer-of-record details are right before the truck leaves the US side of the border. For the domestic side of the business, see our bookkeeping page for garden centres. That page covers the ten-week season, living inventory, and the farm-status question from growing your own stock. We also cover it on our tax page for garden centres.