Pot size is the diameter of the top of the pot. We base the sizes of our plants off the pot size so we have a standard measurement to categorize the plants by. We’re a bit old fashioned, as we’ve been in the nursery business for 3 generations now, so we give our pot sizes in inches. So a 12″ Pot means a pot that has a 12 inch diameter at the top of the pot, or 30cm. In Australia, pot sizes are also measured in centimetres, which is also the diameter of the top of the pot, or litres, which is the volume.

As plants are living and grow, even whilst sitting on the shelf, we need to have a general size by which to group them by. Plants can vary in width and height in the same pot size depending on their age, the time of year and what supplier they were grown by. The pot size gives you a good idea of the maturity of the plant you are getting.

Here is a handy conversion chart:

Pot Volume	Pot Size
5 Litre	15 cm	6″
7 Litre	20 cm	8″
10 Litre	22 cm	9″
15 Litre	25 cm	10″
20 Litre	28 cm	11″
25 Litre	31 cm	12″
30 Litre	34 cm	13″
40 Litre	39 cm	15″
50 Litre	44 cm	17″
70 Litre	50 cm	20″
85 Litre	55 cm	22″
100 Litre	60 cm	24″
110 Litre	60 cm	24″
130 Litre	65 cm	26″
150 Litre	80 cm	32″
170 Litre	80 cm	30″
230 Litre	80 cm	32″