The vinca vines that are all over the gravel are a small wonder. They are supposed to be an annual. The ones Pat plants in her planters die off every fall. There's too many P's in that sentence but I don't know what do do about that. I'm married to Pat. We are talking about plants and plants go into planters. One year the vinca grew all the way down to the ground from the boxes on the deck. Look what happened. They went native. Every year they come back. The ground under the gravel path is moist all year round. Maybe the deck protects them enough. Aren't annuals just perennials that can't survive year round in the climate they are planted? And they are still green as life is draining away from eveything around them.