Vines and Climbers: Cardinal Climber how long after planting does it bloom?, 1 by rick7

rick7 wrote:
I planted a few Cardinal Climber seeds pretty late, in mid-June. But the two plants that came up seem to be doing fine, each growing up on a wooden trellis behind them. The leaves have mostly covered the trellis (see photo of one below) but I'm wondering: how much leaf growth does there need to be before the flowers decide to appear? I imagine quite a bit more than this? This is the only trellis I have for it, so I guess new stems will have to cover over the same territory with the leaves growing more thickly over the already-existing ones?