Coastal has small hornworms ... but no silkworms right now.
It looks like Mulberry Farms has them in stock now (at least it doesn't say "sold out" next to them on their site)
-Brad
I would be but mold wiped out my last couple colonies. You could just do what i did and order 100 crickets/super worms at mulberries and they're handing out butterworms with them