As with most things in life, there really isn’t a single “best” compost for all gardens; however, if you twisted my arm and forced me to come up with an answer, I would have to say – the best compost is the one that provides your garden soil with the minerals it is deficient in. Not the answer you were hoping for, was it?
So let’s go in a different direction…
Ask yourself two questions – 1 – What compost products are available in your area (I can help you with that)? 2 – What can you afford?
Personally, I am a big fan of manure-based composts. I think they offer a more diverse set of microbes than purely plant-based compost.
If you can afford it, worm compost is a wonderful addition to almost any garden, but it comes at a price.
One word of caution – Make sure you avoid using composted biosolids (i.e. composted sewage sludge) in you garden. The link below has some additional information about biosolids and why you should avoid them in your garden (especially edible school gardens).
Organic Compost Doesn’t Always Mean What You Think
In conclusion, the best kind of compost for a school garden is one that you have access to, can afford, and most importantly, that provides some traceability (i.e. you can call the producer and find out what ingredients went into it).
Hint – It’s not. I’ve been staring at a sample of mushroom compost under the microscope for a few days now and it’s full of life.
Mar 13, 2012 Rating
Follow up question by: Sabrina
Hi there,
Thanks so much for your thorough answer. I would love to take you up on the offer to help me find compost in my hood. The gardens I work in are in Toronto (Laurence Heights). I work for a non-profit and all the food we grow gets donated, so our budget is minimal. Any suggestions are greatly appreciated.
Thanks, Sabrina
Mar 13, 2012 Rating
Compost Suppliers in Toronto by: Dave
Hi Sabrina,
I’ve listed several compost suppliers in the Toronto area below:
Also, I just wanted to say, “Keep up the incredible work! Please pass on our support to all of the other gardeners/urban farmers that you work with. And rest assured, by planting one garden at a time, we will change the world.”
By the way, how much compost do you need? If you need a lot, sometimes it’s cheaper to bring in a dump-truck load from outside the city.