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Using Miracle Gro Potting Mix in a Square Foot Bed

Posted by leggs 5 (My Page) on
Mon, May 12, 14 at 17:45

Turns out that courtesy of Costco, I can fill my bed with MiracleGro Moisture Control Potting Mix for about half the price of the vermiculite/peat moss/compost mix. Would this work? What considerations would I need to keep in mind if I used this method?


Follow-Up Postings:

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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

I bought that Moisture Control deal at Costco to fill all my container gardening pots and it was a nightmare. Everything I grew in it died. It was a constant struggle to keep it wet. I'm not sure what it's supposed to do with a claim like "Moisture Control". I basically had a full time job trying to keep the plants alive that I'd planted in it. At the end of the season, I dumped all the pots and refilled them with different soil the next year. Very frustrating.


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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

Ah, shucks. I was hoping that I'd found a cheap alternative to Mel's Mix. Thanks for warning me!


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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

That's the stuff in the yellow bags right? I used it in a box last year and was ok, but that box is watered by a drip hose connected to my a/c condensation pipe so it got regular watering every day all day! To be honest though, I did add a bag of vermiculite to it this year because as mentioned above, it does still dry out relatively quickly (as do all soils in sfg).


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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

It's the blue bags. It's not the same as the yellow bags. It's got some sort of wetting agent in it or something.


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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

My girlfriend grows everything in the costco bags of MGPS, and has good results.

.. even with things that I don't think are a good match for that soil.

I suspect that it comes down to being responsive, and tuning your watering to the soil, rather than demanding that the poor soil respect your watering.


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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

MiracleGro Moisture Control has been my go-to potting soil for several years, and I've had great success with it for flowers in containers as well as herbs and lettuces in my raised, square-foot garden bed. FWIW, last summer was fairly wet here in southeastern PA, so I hardly had to water at all. The only "problem" I encountered was that the Dragon Wing Begonias I planted in deck rail boxes got SO big and top-heavy, the boxes toppled off the railings.


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RE: Using Miracle Gro Potting Mix in a Square Foot Bed

I bought that same thing from costco for like 10 dollars for 2 cu ft. It is terrible, theres a weird yellow thing that grows on top of the soil after a while and it grows mushrooms like crazy in all my indoor plants.


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