Posted: 01/02/2015 at 18:11
Hmm, which large plant were you considering - doubt it will fit in a hosta, the roots….
Oh you meant a large plant pot didn't you? Yes, you can, and I have, As I always say in answer to any question that starts 'can I grow it in a pot', the answer is always 'yes', but you have then to do everything for the plant that it would do for itself in the ground. As we have 400+ pots in our garden, this means no summer breaks longer than 3 days - no. I'm not suggesting anyone else goes down this route, only saying you can grow anything in a pot if you put enough effort into it. The willow will need a large pot, you will probably put it into increasingly larger pots as it grows till you reach the point where you do not want to go further. A thick layer of gravel on the top of the compost helps to keep moisture in, and weeds out - besides improving the appearance. You will need to feed and water it well, keep it entirely weed free, and find the correct type of position in your garden for the pot. I kept mine in a pot for around 8 years, then gave it to someone who wanted to transfer it to the ground - don't know if it survived the change, they don't always as a different root system is grown in a pot than in the sol.
You will need to use a loam based compost for weight, with something like perlite or vermiculite in it to aid drainage. You will need to prune it carefully to keep it in shape - but you can have a lovely plant at the end of it all.