6 year old Tomorite

[zisforzebra]

Is it safe to use a bottle of Tomorite which is nearly 7 years old? It's a nearly full bottle so I thought I'd check before binning it! It's been in a box of forgotten stuff under the stairs.

Have no idea if it's safe or not. I would use it if it looks OK, ie hasn't changed colour, separated, has mould or foaming, release a noxious gas. That kind of thing. I'd maybe try it on one plant first and see what happens then if all OK after a week, I'd use it.

Thanks Deux, good idea! I hadn't thought of that!