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Growing Sea Holly when your native soil is clay?

I have loved Sea Holly for a long time but never grew it because my soil is NOT sandy or well-draining on it’s own, as our natural soil is clay both by experience and geographical classification. I get well-drained soil by using compost and peat moss in generous amounts added in when establishing a bed, and sometimes loam, as well.

I bit the bullet and bought seeds to sow. How will I plant this? Fertile soil with compost will create tall rangy plants. It needs soil that is sandy and with less nutrients. Do any of you have experience growing this plant in your normal soil that is NOT sandy? I don’t want to assume I need to bring in truckloads of sand to create a place for this plant to thrive.

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