If Patuxent Nursery in Bowie doesn't have it, you might try Behnke's (sp?) in Beltsville or Anne Arundel County Farmers Coop in Glen Burnie. Others might have more local suggestions.

Thank you, I found the crab meal at AA county Farmers coop. I'm biting the bullet with shipping for the volcanite on amazon, and the rest I'm getting from Seven Springs Farm in Va.

If you are still looking, I would suggest calling Merrifield Garden Center in the Falls Church area. It's been over 11 years since I've been there, so I can't speak to their current stock, but they used to have a pretty good selection of soil amendments back when I first started gardening.

Hardware City in Kensington may have what you're looking for.

Here is a link that might be useful: Hardware City