Square Black Form Pots
Square Black Form Pots
Square Black Form Pots
Square Black Form Pots
Square Black Form Pots
Square Black Form Pots
Square Black Form Pots
Square Black Form Pots
Square Black Form Pots

Square Black Form Pots


$3.20 Sale price

  • In stock - departs in 1-2 business days
  • Inventory on the way

Our square plastic planting pots offer excellent surroundings for annuals, vegetable cuttings and other seedlings. Used in conjunction with Black Form Trays, these economical vacuum-molded pots are designed with performance in mind. You also can add them to traditional 1020 trays and other flats to organize plants and prepare them for transplanting.

Small black planters are available in a variety of configurations to meet different handling, labeling and bench space requirements. The 3.5-inch and 4.5-inch square nursery pots come in regular and "deep square" versions to accommodate seedlings with longer root systems. See below for the full dimensions and capacity of each pot.

Square Black Form Pots are an effective method of bringing potted plants to market. Save money with our large cases of mini black planters for commercial and teaching greenhouses.

Black Square Nursery Pot Features:

  • Made of vacuum-molded (i.e. thermoformed) polyethylene plastic
  • Bottom drainage holes
  • Eight configurations
  • For use with Greenhouse Megastore Black Form Trays

NOTE: Carrying trays must be ordered separately.

Additional Information

Potting Guide (PDF)


Name Dimensions (in.) Capacity (cu. in.)
2.5" Square 2.5" L x 2.5" W x 3.5" H 15
3.25" Square 3.25" L x 3.25" W x 3.5" H 29
3.5" Square 3.5" L x 3.5" W x 3.5" H 32
3.5" Deep Square
3.5" L x 3.5" W x 5 H 42.25
4" Square 3.66" L x 3.66" W x 3.11" H 32.83
4.5" Square 4.25" L x 4.25" W x 3.75" H 50
4.5" Deep Square 4.25" L x 4.25" W x 4-7/8" H 65
5.5" Square 5.25" L x 5.25" W x 6 H 116

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Customer Reviews

Based on 138 reviews

Perfect size for deep roots and longer growing time per pot.

L.M. (Killeen, US)
Luv these pots! Wish I had ordered MORE of them.

Recently ordered two sets of 18 of these 3.5" Deep Square Nursery pots (3.5" L x 3.5" W x 5 H) and the only problem with them is I wish I had ordered a lot MORE!
At 70, I'm not able to do many of the things I want to accomplish but try to help where and when I can by supporting a local non-profit that has built four free community gardens where everyone is welcome to "help as you can and take what you need".
Something I am able to do is to start a lot of plants (mostly tomatoes) for them. Transplanted 35 Red Snapper young tomato plants into these new 3.5" deep square pots yesterday and I am so impressed with their quality and sturdiness. They should last for several years.
Also bought a set of ten 1020 trays from Greenhouse Megastore and all of my new pots and trays have been lettered with my name using a silver Sharpie because I really, really want to get them back when after the tomatoes are transplanted into the gardens in early March (Central Texas, 8b/9a).
Thank you for providing such great quality products!

Lisa Smeltzer (Paso Robles, US)
3.5" Deep Square

I was doing a fundraiser for my church and had over 2000 plants for sale. I got these pots and ended up ordering more. They worked perfectly for our needs. Sturdy enough and uniform display. I would gladly order them again for our next fundraiser. One note.... Due to My lack of judgment, the empty pots warped in the sun. Do not store the empty pots in the sun! That being said these pots are a very good value.

Edward (Salt Lake City, US)

Usually go through a box or two with spring sales. Holds plants well. Drains well. Labels stick well (l use printed side labels). Comes free when planting.

Gail Thurman (Columbia, US)
The pots worked well for our purposes

We appreciated being able to buy the pots in bulk, and they have been of good quality. No complaints.

M.A. (Kings Park, US)
Perfect size

These were the size I need for potting up. Shipping was very fast! The quality was less than I would prefer, but the price was right, so I'll just be gentle with them.

Paul Reising (Evansville, US)
Good pirchase

Good quality, good price, fast service. I’ll be back for more purchases


Exceeded my expectations! The pots are sturdy, and so is the form. The quality of the products is why I continue to return to Greenhouse Megastore for my gardening needs!

Dirk Hagar (South Deerfield, US)
Sturdy Little Pots

Loved the pots but they don't fit in the TRK 18350 trays very well. They are so tight in the trays you really have to cram them in to get them to fit and them it bows the tray making it difficult to pick up.


The pots were exactly what we ordered, great price and were delivered earlier than originally expected.