Oenothera berlandieri 'Siskiyou' - mistake

I became interested in the yellow Evening Primrose (Oenothera missouriensis), the large yellow one that is often used in rock gardens or at the front of borders. And anyone that knows me knows that when a plant catches my fancy, I look at others in the same family that might look nice in the garden too. Sure enough, there was another that looked interesting - the Mexican Evening Primose (O berlandieri 'Siskiyou').

The description said a whole bunch of things that sounded quite promising - "extremely floriferous - beautiful light rose shade - good potential as a landscaping plant with a long season of bloom - Plants form a low mat". Sound interesting? I thought so. The description said a few other things that I sort of glossed over. There was the adjective "vigorous" and "because of its wandering habit, this should probably be restrained or edged regularly." I can handle that, I said,so I purchased 3 plants and planted them in full sun. In the first year, they filled in the area that I wanted them to fill in. The next year, they continued to expand and I tried to haul them in. It was a lot of work but the effort was worth it. But they continued to expand exponentially. No matter how hard I tried, they just took off.

So I decided to dig them out. It took 5 years before I managed to get the last of the roots out. Since then, I pay much more attention to words like "vigorous" and "wandering habit".
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