Depleted soil.

[Flobalob]

I've emptied one of my indoor beds and saved the soil.
Thinking I might be able to use it for carrots in containers, I sieved it & bagged it up.
No doubt the soil is depleted of nutrients so I would like to know what would be best to add to it, for it to become usable enough again.

[Two_Sheds]

What WAS in it?

Don't add anything for carrots ... they'll grow in sand

[glasgowdan]

I'd mix it up with a bit of manure and bonemeal and use it outdoors, or just use it for seedling compost.

[SarzWix]

Carrots shouldn't need anything added really, although you could mix in a bit of blood,fish & bone. But as T_S says, they'll grow in sand, so it's not totally necessary.

[Flobalob]

I have a couple of grapevines growing in the 'saved soil.
I reckon i'm going to mix it with a half bag of potting compost i have knocking around.

[solway cropper]

I have a couple of bags of fine sieved soil that I rescued when I grubbed out some shrubs. Obviously it's going to be depleted but as the others say it's great for carrots and other long rooted types, especially when you have a clay soil like me. I wouldn't use it for seed compost as you don't know what might be lurking in it.

[vegnut]

I did similar last year. I emptied an old flower pot and used the soil in a tall terracotta pot, i then sowed early nantes and got a tasty clean crop from it.

[Rocketron]

Earthing up potatoes growing in bags/containers ?