Fern Premium Potting Mix

As a rough guide, each litre of mix fills about one 12cm pot, so a 2.5L bag fills 2 to 3 and an 8L bag fills about 8.

Bigger pots take more mix: a 17cm pot needs about 2.5L and a 21cm pot about 4.5L. Use the pot calculator on this page to work out how much you need.

You can, but the old compost will take away some of the air and drainage the mix is made for. For the best results, gently shake the old compost off the roots and pot straight into fresh mix.

Peat is dug from bogs that take thousands of years to form and hold huge amounts of carbon. All our mixes are peat free. We use renewable materials such as coco coir, coco husk, bark and pumice, which give roots the moisture and air they need.

The worm castings in this mix give a gentle feed while your plant settles in. After that, feed with a diluted fertiliser while your plant is growing.

Fold the top over and keep the bag somewhere cool and dry. The mix keeps well, so you can use the rest next time you repot.

Changed your mind? You can return pots, gifts, accessories and other non-plant items. Email hello@growtropicals.com with your order number within 14 days of delivery, then send the item back within 14 days of telling us. You pay the return postage.

Items must come back unused and in their original condition. If an item has been used, we may reduce your refund by the value it has lost, and for used items this can be the full price.

Live plants cannot be returned because you have changed your mind, but they are covered by our Live Arrival Guarantee.

If something arrives damaged, faulty or wrong, email us with your order number and photos and we will put it right at no cost to you. Full details are in our returns policy.

Choose your delivery speed at checkout. Express orders placed before 1pm are dispatched the same day, otherwise the next working day. Standard orders are dispatched within 2 to 3 working days and Economy orders within 4 to 5 working days. Once dispatched, every order travels by 24 hour tracked courier.

Delivery is free on orders over £60 with Economy, over £100 with Standard and over £150 with Express. Below that, the charge depends on your basket total and is always shown at checkout before you pay. The full price list is in our shipping policy.

Orders without plants are dispatched Monday to Friday. If your order also includes plants, it goes out Monday to Thursday so the plants are not left in the courier network over the weekend. Delivery can take longer at busy times such as Black Friday and Christmas.