I'd return it. It's not a starter mix and it's probably not organic - it contains a "nutrient package" (likely some sort of synthetic fertilizer) and a wetting agent. Seed starting mixes should be very light and very porous and it helps guard against damping off problems if the mix is sterilized. Often these mixes are a combination of peat or coir and vermiculite and perlite, but you can start seeds in just straight vermiculite as well. And don't worry about the vermiculite - any problems with asbestos contamination occurred many years ago and all horticultural vermiculite found now is asbestos-free.

For seed starting purposes, you don't need lime, ash or fertilizers. Once the seedlings have developed their second set of true leaves, you should pot them up into a larger pot with regular potting mix and you can start the fertilizing program then. You might want to read up on the thread discussing organic fertilizer and containers for some additional info - until you can get these babies into the ground, you may have to forgo being 100% organic with regards to ferts.

Is this an organic mix? Yes, as the common concept of what is organic is understood. Is this something acceptable to an organic gardener? No.
I have used compost as both my starter mix and growing mix for years with no problems.

I hardly ever disagree with Pam, so I won't start now - I think I'll just say that I really don't like vermiculite as a seed starter. It readily compacts and loses its loft when wet, especially when top-watered with anything but mist, and holds too much water/too little air to be my choice for seed starting.

I wouldn't suggest compost as a good choice either. I would discourage its use because it is highly water-retentive and damping-off diseases are far more likely to be a factor than if you were using a sterile medium.

If you're using cell-packs, you might try filling them with a mix of 1 part sphagnum peat: 5 parts calcined DE ('floor-dry' from NAPA auto parts stores). Because of its low pH, sphagnum peat is essentially sterile, and the calcined DE is sterile (practically speaking). (DE = 'diatomaceous earth' = fossilized remains of a type of hard-shelled algae called diatoms. It's fired at high temps until it is hard and structurally stable). No need then to replant from the cell-packs - just lift the entire root mass & set it into your garden or container.

Al

Let me just say that personally, I don't like vermiculite at all and don't use it for any purpose, but I know a number of professional growers that do use vermiculite as a single ingredient seed starting medium and are very happy with the results, so that's why I included that comment. But professional growers tend to operate a bit differently from hobby growers.......they tailor their methods for speed, cost and efficiency and they tend to turn things over at a much more rapid rate than we home gardeners do. What works well for them may not be so effective for us.

I don't do a lot of growing from seed but when I do, I use a prepared mix that is 2 parts fine sphagnum moss to one of fine perlite. It's sterile, extremely lighweight and very porous. Similar mixes abound or you can make your own.