Where plants are pot grown, we always show the size of the pot (measured in litres). We do this to help you visualise the bushiness of the plant which directly relates to the size of the pot. We also sell cell grown plants which have been grown in mini pots (or cells) - these are small plants which have smaller roots than plants grown in 2 litre pots, but they are very inexpensive. In some species, and also P9's which are 9cm pots (a bit bigger than a yogurt pot).
Here is a photograph of one of our biggest selling species, in various pot sizes. From right to left the plants are in 2L, 3L, 4L, 5L and 10L pots.
As you can see, the bushiness of the plant increases with the pot size and although the ones in larger pots are more expensive you don't need as many of them to fill the space (so sometimes plants in big pots work out cheaper than a higher quantity of plants in small pots) and you get the benefit of a fairly bushy immediate effect
Pot sizes vary a great deal and some species have to be grown in pots that are particularly deep or particularly wide so measurements aren't standard, but we've shown below the dimensions of the pots we use most frequently
2 litre measures approx 14cm in diameter, approx 5½"
5 litre measures approx 23cm in diameter, approx 9"
10 litre measures approx 28cm in diameter, approx 11"
All plant dimensions are measured from the top of the pot or root ball ie 40/60cm plants will be between 40 and 60cms above ground when planted.
Pot grown plants are more expensive than cell grown/P9's, bare roots or root balls (for the equivalent height) but it's worth bearing in mind that even the smaller 2 litre pots are a min of 2 years old (sometimes 4 years old, depending on growth rate), and they have been re-potted up to 3 times, trimmed up to 5 times, fed regularly and watered daily - and all for less than a glossy magazine or a fancy coffee!