I assume you are growing in the ground? Why do you think you need lime? Did you do a soil test? What other things are you adding to your soil? What do you want to grow?

First, the MG and lime will not be a toxic combo. Lime and nitrogen do react together, so you need to wait a couple weeks for soil chemistry to balance out after mixing lime with N fertilizers or organic sources like manure. But even if you only wait 24 hours, nothing terrible will happen.

Second, MG soil is intended to be used right away. If you put it in your garden the season before you grow, most of the nutrients will have washed out by the time you plant.

Third there are many better things to add to your soil than any MiracleGro product, like compost, composted manure, shredded leaves and grass clippings. If you're planning for next season you have time to make your own compost.

Should I still use the Miracle Grow soil?

That all depends on what you are using it for? It has limited applications and as already mention, there are much better options for most of those.

reading on the net has given me the impression this is a toxic combo

Can't imagine what that claim is based on unless it was just some sort of personal bias, a slam against MG.

But Ohiofem asked the really important question - why do you think you need lime?

Dave

You should never use Miracle Gro soil, mainly because they use Peat Moss in it, of which there is no possible way to 'sustainably' harvest from the earth, no matter how much Miracle Gro or the Peat Industry will deny this. (They harvest it at hundreds of times the growth rate of the bogs, which have accumulated over millions of years, and grows extremely slowly).

They gut out peat bogs all across the world for the stuff, which eradicate and significantly alter bog ecosystems - unique places in the world that support endemic species of all sorts including carnivorous plants, other specialized plants, and animals which use them to survive.

Peat is used for organic matter, but compost can be used for organic matter and is much more sustainable (it uses our food waste, or other organic plant waste).

The below link is an image of what you support when you buy Miracle Gro or any other soil product that uses Peat Moss. You could be supporting the compost industry instead by seeking out more ecologically sustainable soil mixes.

Here is a link that might be useful: {{gwi:69332}}

I think what you read about it being a "toxic combo" was in regards to MG fertilizer (not MG soil) being mixed with lime, which isn't toxic but will result in ammonia volatilization as Ohiofem mentioned and so a drop in effectiveness of the fertilizer.

I am planting common vegetables (tomato, cucumber, beans, zucchini) in an inground garden.
I tested the soil and it is has low PH so I was to raise it.

I am planting common vegetables (tomato, cucumber, beans, zucchini) in an inground garden.
I tested the soil and it is has low PH so I was to raise it.

The issue with lime is that unless your soil is way down in the pH 5 range adding lime can skew you way into the alkaline range. Most vegetables prefer somewhat acidic soil and are more tolerant of acidic soil than they are of alkaline soil. Plus lime takes several months to effect any change.

If you used one of the home test kits to test your soil then they are famous for being inaccurate and no changes should be made based on one of them or you will have worse problems. If you had it professionally tested then they would have told you how much of what to add.

So if you are going to use the MG Garden Soil, which already contains some lime anyway and a relative pH of 7.0, that alone would very likely be enough of a change without using additional lime.

If you choose to use plain compost or well-aged manured compost instead of the MG stuff then assuming you add a sufficient amount that too would raise your pH into an acceptable range without adding more lime.

You don't mention what your pH tested at so without that info there is no way to know how much of what you need to add - if anything.

Dave

It takes months for the lime to actually change the PH. It's not something that happens fast. That is what I was told. 5-6 months I hear.