quart pot plant

Understanding Nursery Containers – Common Pot Sizes Used In Nurseries

Inevitably you’ve come across nursery pot sizes as you have browsed through mail-order catalogs. You may have even wondered what it all means – what is #1 pot size, #2, #3 and so on? Keep reading for information on the common pot sizes used in nurseries so you can take some of the guesswork and confusion out of your selections.

About Nursery Plants Pots

Nursery containers come in a number of sizes. Oftentimes, the particular plant and its current size determine the pot sizes used in nurseries. For instance, most shrubs and tree are sold in 1-gallon (4 L) pots – otherwise known as a #1 pot size.

The # symbol is used to reference each class number size. Smaller containers (i.e. 4-inch or 10 cm. pots) may also include SP in front of its class number, indicating a smaller plant size. In general, the larger the # is, the larger the pot and, thus, the larger the plant will be. These container sizes range from #1, #2, #3 and #5 to #7, #10, #15 on up to #20 or higher.

What is #1 Pot Size?

The gallon nursery containers, or #1 pots, are the most common nursery pot sizes used in the industry. While they normally only hold 3 quarts (3 L) of soil (using liquid measure), they are still considered to be 1-gallon pots. A variety of flowers, shrubs and trees can be found in this pot size.

As the plants grow or mature, nursery growers may step up the plant to another larger size pot. For instance, a #1 shrub may be stepped up to a #3 pot.

Variations in plant pot sizes can be quite different among individual nursery growers. While one nursery may ship a large, lush plant in a #1 pot, another might only send a bare, twiggy-looking plant in the same size. For this reason, you should research beforehand to make sure of what you are getting.

Grade of Nursery Plant Pots

In addition to the various pot sizes, some nursery growers include grading information. As with the variations among sizes, these too may vary among different growers. These are usually dependent on how a particular plant has been grown (its conditions). That said, the most common grades associated with plant pots are:

  • P – Premium grade – plants are normally healthy, big and more expensive
  • G – Regular grade – plants are of moderate quality, fairly healthy, average cost
  • L – Landscape grade – plants are of less quality, smaller and least expensive choices

Examples of these might be #1P, meaning a #1 pot size of premium quality. A lesser grade would be #1L.

Inevitably you?ve come across nursery pot sizes as you have browsed through mail-order catalogs. You may have even wondered what it all means. Read here for information on common pot sizes.

Why Our Plants Are Better

Plant Size – What It Means to You

At Great Garden Plants, you’re off to a great start! When you order plants online, there’s more to the consider than just price. The size of the pot that you order has a significant impact on how well the plant grows once it reaches your garden. As experienced horticulturists, we understand the difference that plant size makes in your satisfaction and success. That’s why our goal is to provide exceptional quality and value in every plant we sell. Here’s a look at our pot sizes so you know what to expect.

1-Quart pots – Most of our perennials and roses are grown in this extra-deep 1-quart pot, which ensures a good volume of vigorous roots. We chose this size with your success in mind. It will get your garden off to a great start the first season!

Our 1 gallon pots All of our trees, including ‘Green Giant’ and ‘Emerald’ aborvitae (Thuja), and Leyland cypress, are shipped in 1 gallon pots. This generous size ensures large, well-established root systems that fuel rapid growth after planting.

2-Quart pots – Our shrubs are grown in jumbo 2 quart pots for a balance of hefty plant and roots.

Starter Quart pot All of our Proven Winners® ColorChoice® shrubs are shipped in this pot. They combine excellent branching for a full look in the garden with a vigorous root system in a size that’s easy to ship.

3-Inch pot We find this little pot is perfect for shipping naturally shallow-rooted succulents like hens and chicks (Sempervivum) and rainbow bush (Portulacaria). Its petite size (and price!) make it ideal for ordering for party and shower favors, gifts, and terrariums.

Buy at Great Garden Plants where size really matters. Buy direct from the grower at volume pricing