The four wild flower meadows in the orchard area of the park were planted with a variety of exotic plants about 18 months ago. One of those was flax, which made a brief appearance last autumn but has now come into its own. It has not yet reached its peak, and should last throughout the summer. As is often the case, (my) photos do not do it justice, you really should visit in person.
I have sneaked in a few other photos of interesting looking plants, including the buttercups starting to emerge, red campion, plantain and the wild garlic and mustard. I think the park at this time of the year is at its most diverse and interesting!