Fernleaf Fiddleneck (Phacelia Tanacetifolia)

I came across this unusual flower in the poppy field I visited a couple of days ago https://www.blipfoto.com/entry/3118216351873763899
and haven't been able to identify it using my flower field guide.  However, I did a search online and have found out the following:
It's a member of the borage family, native to Southwestern United States and Northwestern Mexico, it's rich in nectar and very beneficial to a host of pollinating insects, these include honey bees, bumble bees, butterflies and hoverflies. It also attracts other insects such as ladybirds and lacewings that control unwanted garden pests, including aphids. It is also drought tolerant and deer resistant.

Apparently, many farmers are now growing it as a green manure and cover crop to improve the quality of the soil.

I've seen a few fields and field margins (whilst driving around North Norfolk) that have fields of purple flowers, so I'm guessing that this is what is being grown.  It grows about a meter tall and is rather attractive, certainly the bees loved it.  Maybe a good one to grow in our gardens given the need to help the bees and to grow plants that don't need watering.  It's good to see local farmers helping our pollinators.