What ever happened to achillea filipendulina yarrow?
About 23 years ago I planted seeds for this yarrow gold plate. It reaches 4-5 feet and has a large gold head. I transplanted it at the wrong time, and didn't take care of it, so I lost it. I've been looking for a replacement plant or seeds, and can't seem to find it anywhere.
The yellow yarrow that I find only grows 2-3 feet tall, has weaker stems, and the head is much smaller than the gold plate.
Does anyone have any information on this? Why is it so hard to find?