check out Pickering Nurseries for information on these plants. or look up the David Austin website.

1. Yes
2. Doesn't matter, we discuss Austins in both forums.
3. Yes, but it depends on the variety and your location.

See the thread linked below for a recent thread on disease resistant Austins. Austin roses are typically in the (modern) Shrub class. There is nothing different in care than other roses.

Here is a link that might be useful: Blackspot Resistant David Austin Roses

Andrea, this is how the addiction begins. Generous Gardener climbing up my porch.