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May 3, 2020 6:21 PM CST
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Hello, I am wanting to grow spinach in a container. I have Scott's Pure Organic potting mix, when using this should I mix one part organic compost to two part potting mix? Or does the potting mix alone have all the nutrients my spinach will need?

I am new to growing vegetables but am keen to start! Is there a general rule of thumb with potting mixes that you need to add more to them to get the most out of your veggies? I always thought the potting mixes would be enough on their own.
May 3, 2020 6:44 PM CST
Name: Daisy I
Reno, Nv (Zone 6b)
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According to their website, Scott's Pure Organic potting mix is a stand-alone product. It even has an added 3 months supply of nutrients.
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May 3, 2020 6:47 PM CST
Name: Ken Isaac
Salt Lake City, Utah, USA (Zone 7a)
"compost" and "potting mix" are often used interchangeably, so look on the bag label for the contents.
Your bag of mix should tell you if nutrients / fertilizers are incorporated into the ingredients, and what they are, and give you the amounts. If it says anything about 'feeds' or 'nourishes' plants, that's a key that some nutrient providing elements are included. This should be all the fertilizer your plants would need for a season or so. Other mixes might just include combinations of composted wood fibers, peat, or coco coir with 'grit' like perlite, pumice or sand. These mixes will not feed your plants, and you would need to fertilize them in your choice of ways.

I think your product in Australia lists the following: Blood & Bone meal, Fish Meal, Seaweed or seaweed extract, chicken manure, Feather meal .
All these would be fertilizer ingredients.

*** update: oops, Daisyl beat me to the post
Last edited by kenisaac May 3, 2020 6:48 PM Icon for preview
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