Bag length, planting-hole spacing, drainage cuts, and pith-to-chip ratio — built to your bench or gutter system, not a fixed retail size.

Commercial greenhouse systems use different bench widths, gutter spacing, plant densities and irrigation layouts. The grow bag should be specified against that system rather than selected by a city or a generic catalogue size.
A bag sized for a generic retail garden-centre program frequently has the wrong hole spacing for your plant density, the wrong drainage pattern for your irrigation volume, or an expanded height that doesn’t clear your gutter lip. Ordering a fixed-spec bag and adjusting your growing practice around it is backwards — the bag should be built around your system.

Avee manufactures coco pith and husk-chip grow bags to a specification confirmed with you before production, using a common base formulation of 70% pith to 30% chip by volume — adjustable depending on your target air-filled porosity and irrigation frequency.
Length, width, expanded height, planting-hole layout, and drainage pattern are all confirmed against your bench or gutter system — not applied as a single default across every bag size. Custom dimensions and configurations may be available depending on order volume; we confirm specification and minimum quantities during quotation.
View grow bag product lineFor propagation, top-dressing, or crops better suited to a slab format than a bag, Avee also supplies commercial coco grow slabs in the same pith/chip family, plus loose coco husk chips, propagation cubes, and seed-starting pellets — typically specified alongside a bag order for a full-cycle program.
View coco husk chipsBag footprint is set to match your bench or gutter run — give us your run length and target plants-per-bag and we work backwards to a fitting length. Bags ship compressed for freight efficiency (a typical ratio in the range used for our 5 kg block format is roughly 5:1) and expand once irrigated; confirm your target expanded height against your gutter clearance before finalizing an order. Planting-hole count and centre-to-centre spacing are set to your plant density per crop, and drainage-slit number, length, and placement are confirmed against your irrigation volume and frequency — neither is applied as a single default across every bag size. The 70/30 pith-to-chip blend is our common commercial formulation; ratio can be adjusted for crops needing higher air-filled porosity (more chip) or higher water-holding capacity (more pith). Substrate pH runs 5.5–6.5, EC below 0.5 mS/cm using our stated test method, and material is triple-washed before compression.
Custom bag specifications are made-to-order, so they ship on a production and freight schedule confirmed in your quotation — different from stock-item dispatch. Orders for products already held at our Cambridge, Ontario warehouse dispatch from Cambridge when the requested item is available there; contact us to confirm current availability before assuming stock. For larger seasonal volumes, container-direct supply from our manufacturing operations in Pollachi and Peravurani, Tamil Nadu may also be quoted as an alternative route.

This guide preserves the useful specification knowledge developed for Windsor–Essex greenhouse buyers, but applies it to commercial operations across North America. Procurement teams should compare dimensions, root-zone litres, dry weight, particle distribution, water-holding and aeration targets, film, planting holes, drainage, pallet build and batch documentation—not repeat the same sales copy for every city.

Grow bags are built from coco pith and husk chip processed at Avee’s own manufacturing operations in Pollachi and Peravurani, Tamil Nadu — factory-direct means Avee manufactures its own material, not that bags are assembled in Canada. Batch documentation covering EC, pH, and wash processing is available on request for any order; ask for it when you request your bag specification quote.
Tell us your bench or gutter dimensions, target plant density, crop type, and destination postal code, and we’ll return a bag specification and freight-inclusive quotation.