Gro Pro Injection Molded Plastic Pot - 5.5in x 5.5in x 5.75in - Square - Black

Square Injection-Molded Plastic Pot for Transplanting, 5.5x5.5x5.75in

Seedlings and rooted cuttings need a container that matches their root system without leaving excess soil volume that stays wet too long, and a square nursery pot solves that more efficiently than a round one of the same footprint. The Gro Pro Injection Molded Plastic Pot is built from high-grade polypropylene in a square profile, giving growers a consistent, uniform container for moving plants through early growth stages on a bench or shelf.

At 5.5in x 5.5in x 5.75in, this size gives young plants more root room while still fitting standard nursery flats and bench spacing.

Key Features & Benefits

• High-grade polypropylene construction — resists cracking and warping under repeated watering and handling.
• Square profile — packs more tightly on a bench or shelf than a round pot of the same volume, cutting wasted space.
• Injection-molded consistency — uniform wall thickness from pot to pot for predictable stacking and watering behavior.
• Indoor or outdoor use — holds up to regular use in a greenhouse, grow room, or outdoor nursery bed.

Who Should Use This Pot

This pot fits growers moving seedlings, rooted cuttings, or young plants through an early growth stage, whether that's a hobbyist starting a few plants at home or a commercial nursery running trays of starts through a bench. Its square shape makes it a practical choice anywhere bench or shelf space is limited.

About Gro Pro

Gro Pro manufactures a line of nursery pots, fabric grow bags, saucers, and related growing accessories sold through hydroponic and garden supply retailers. The line covers everyday container needs for commercial growers and home gardeners alike, from small starter pots up to large-format fabric containers.

Frequently Asked Questions

What is the Gro Pro Injection Molded Plastic Pot made from?

It's made from high-grade polypropylene, a rigid plastic chosen for its resistance to cracking under repeated watering and handling. The material holds its shape through transplanting and normal bench use without the flexing you get from thinner, lower-grade plastic pots.

Can I use this pot outdoors as well as indoors?

Yes, it's built for both indoor and outdoor use, whether that's a grow room, greenhouse, or an outdoor nursery bed. Just keep in mind that any dark plastic pot left in direct sun for extended periods will heat up faster than a lighter-colored container.

Why choose a square pot instead of a round one?

A square pot fills a bench or shelf more completely than a round pot with the same soil volume, since there's no wasted space between adjacent containers. That matters most when you're running trays of plants through a propagation or nursery stage and every inch of bench space counts.

What growth stage is this pot best suited for?

The smaller sizes in this line work well for seedlings, rooted cuttings, and young plants stepping up from a starter cell or plug. Larger sizes give more established plants additional root room before they're ready for a bigger container.

Does injection molding make this pot different from other plastic pots?

Injection molding forms each pot from a single mold under pressure, which keeps wall thickness consistent from one pot to the next. That consistency is what makes pots from the same production run stack, nest, and drain in a predictable way, unlike thermoformed pots that can vary more piece to piece.

How do I know when it's time to move a plant into a larger pot?

A common sign is roots visibly circling at the drainage holes or growing dense enough that water runs straight through without being absorbed. When you see either sign, moving up to the next size in this line gives the root system more room before it becomes pot-bound.