My stems are too fat
I'm growing dahlias for cutting but my stems are growing too fat. A lot of them are around 3/4 inch with too much branching. Any suggestions on how to get longer thinner stems with less branching? The overwintered dahlias are especially bad. I tipped most of them after the 3rd node but maybe I need to tip the laterals a 2nd time. I cut some of them back hard this morning to see if that helps. I've heard that part shade would help too so I'm serious considering building a shade cloth structure to cover major portions of my dahlia beds. Maybe I need different varieties? Many of mine are listed by Swan Island as good for cutting. Any advice?