18 litre plant pot dimensions Rain 18 Clear Nursery Pot - 18cm x 18cm - 3.3L

18 litre plant pot dimensions Rain 18 Clear Nursery Pot - 18cm x 18cm - 3.3L*Buy singles for $2. 30 each* *Save & get 6 for $11. 70 ($1. 95 each)* Size This is the Rain 18, which measures: 18cm wide across the top (17. 8cms to be exact) 17. 7cms tall 13cms wide across the base Volume 3. 3 litres This size pot includes a barcode on the side back of the pot. Matching saucer available here > (note volume is based on filling to the top, no allowance for dropping soil level at the top for ease of watering and no allowance for the

*Buy singles for $2.30 each*

*Save & get 6 for $11.70 ($1.95 each)*

 Size 

This is the Rain 18, which measures:

18cm wide across the top (17.8cms to be exact)

17.7cms tall

13cms wide across the base

Volume 3.3 litres

This size pot includes a barcode on the side / back of the pot. 

Matching saucer available here >

(note volume is based on filling to the top, no allowance for dropping soil level at the top for ease of watering and no allowance for the space the plant's roots will take up)

Rain 7 MINI - 6.5cms x 7cms - volume 170 mls

Rain DEEP MINI - 5cm x 11.5cms - volume 220ml

Rain 8 - 7.5cms x 8cms - volume 330 mls

Rain 10 - 10cms x 10cms - volume 0.75 litre / 750 mls

Rain 12 - 11.5cms x 12cms  - volume 1 litre

Rain 14 - 14cms x 12.5cms - volume 1.3 litres 

Rain 15 - 15cms x 14.5cms - volume 2 litres

Rain 17 - 17cm x 15cm - volume 2.5 litres 

Rain 18 - 18cm x 18cm - volume 3.3 litres THIS SIZE

Rain 20 - 20cm x 19.5cms - volume 4.7 litres

Rain 23 - 23cms x 20.5cms - volume 6 litres

 How much soil will you need?  

All volumes are approximate but use the volume above as a guide to work out how much soil or other substrates you need, or enter the pot size and number of pots below. Remember to allow for the plant's roots, you'll need less than you might think.

Potting mix calculator

 What pot size should you go up to?  

As a general rule, it's best to only go up one to two pot sizes when repotting. Too big an increase can increase the risk of root rot and temporarily stunt or slow down foliage growth. Too much more soil can increase root rot by holding too much water for too long. Too much more soil can also stunt or slow foliage growth while plants divert their energy to root growth to fill in the new space. 


One pot size is about 2cms wider than what you plant is in now. For example, from a 12cm wide to a 14cm wide pot, depending on the pot heights. If your new pot is both taller and wider, that may account for moving up two pot sizes, so do check both height and width.

 What are Rain clear pots made of?  

Rain pots are recyclable (recycle code 5), made of the same type of thermoplastic used for food, for everything from kids lunchboxes to medicine bottles. I prefer this type of plastic for plants because it has:

• High chemical resistance to reduce leaching, making them a better choice when using fertiliser so nutrients stay available to roots and don't build-up over time.

• High heat resistance, handy for sun lovers indoors, and for cleaning with hot enough water to kill any baddies if you ever get pests. Also top rack safe in the dishwasher.

• Great clarity for use when you want to see what's inside, ideal to keep an eye on root health.

• Low moisture loss making it easier to predict when your plants need watering again, and a great option for heated, dry-air conditions like a typical kiwi winter.

• BPA free for peace of mind.