On a whim I ordered some rhizomes; planning to drop them on a hill that has vigorous plant growth without watering. It's north facing, coastal, with some direct sunlight.
Asking for insight:
* what's a minimum depth for soil? It's 1 to 4 inches of hard-pack on clay, all needing rework to make loamy. Can I get by with 8 to 12 inches of depth?
* are hop vines trainable? I can set them up to go 16' tall, but I'd rather have them run horizontally after a 3 to 6 foot rise. Would it negatively affect the plant?