My Dahlia Stems Fell Over

Q: I planted some dahlia tubers late in May. They came up but were leggy
and fell over. I staked them but wondered if I planted too shallow. 

A: Dahlia tubers have a remarkable ability to anchor themselves even if
planted too high. The question now, though, is whether they survived the cold
weather this winter. Wait until mid April to see if any growth appears. If you
see greenery, you can stake them or replant a bit deeper.