How large an area are you after, and does it have a lot of other plants that you value?

I marvel at how different environments can transmutate a perfectly well behaved gem of a plant in one person's yard into a garden thug somewhere else. I have had Siberian squill for 20yrs peacefully coexisting with a multitude of other woodland plants. It does it's thing in early spring and leaves without fuss. So it is surprising to hear what a nightmare it can be elsewhere. My biggest woodland thugs are vines, euonymus, vinca, Virginia creeper, something I call 'grape vine', etc, etc. I realize my post offers no helpful suggestions ... all I can say is good luck with your squill & I'll keep doing battle with my vines.

Try an overlapping layer of cardboard instead of landscape fabric & top with wood chips as from a tree trimmer. That way no weed seeds. If no cardboard try thick layers of newspaper or scrap office paper. I compost staples & paper clips.

If I don't have many wood chips I use what compost or mulch ingredients available then topped with the wood chips for a uniform "frosting" layer. Used coffee grounds, straw, chicken manure plus bedding, shredded leaves, grass clippings, mown over cutting back of perennials, etc. If you're concerned about weed seeds just make sure you're not adding them. After 2 days on the lawn in the sun the nepeta & hardy geraniums I cut back were dry & shriveled. The mulching mower plowed right over them. I forgot to ask hubby to bag the lawn that week because I wanted the mulch. Only a few stubborn stems remained on the lawn to gather.

Grass clippings are my favorite because they dry so easily on a tarp or in the sun on a windy day. Easy to spread & feed the soil. Just make sure no weed & feed on the lawn 1st.

Hello! It’s been 9 years since your post. How is the Scilla doing?! I have been removing flower heads to prevent seed and then going back through and removing bulbs one by one. Terribly painful process. Hope your woodland is Scilla free!