Hypericum Species, Aaron's Beard, Creeping St. John's Wort, Rose of Sharon

I planted these in 2008 at the foot of several clematises to provide them shade for their feet. They were well-behaved plants until about...Read More 2017, when they went absolutely wild, spreading into the entire bed, choking out everything in its path, including a small shrub!

I hit them last fall (2019) with RoundUp, which despite their woody stems killed them quite readily. I sheared them to the ground a few weeks later, but the next spring I'm still contending with the roots and stems, having to bring along a clipper when digging a hole so that I can trim back the roots.

Unless their roots are contained I cannot recommend this plant. They tunneled through heavy clay to spread like gang-busters.

Planted three plants last year late in the season and they died in our horrible winter. Planted four in May and they never flowered. Si...Read Moregh. I so looked forward to them covering a bank.

I planted 2 St. John's Worts last spring from very small mail order specimens. They have steadily grown at a small pace into beautiful gr...Read Moreound cover-like plants. The small leaves are a very healthy medium-green and the plants are about 2 ft. wide. I have yet to see them flower (maybe this year!). These aren't showing any invasive tendencies here and I have them planted in part sun with amended soil, right under my pomegranate. They aren't diciduous in my area and the leaves don't change color as some say they do. We have had unusually long frosts here the last 2 months and they weren't harmed a bit. These seem very hardy so far without any additional needs.

Update: These 2 plants of mine have never flowered. They spread with shallow underground shoots and I have to keep trimming them back. I wouldn't call them invasive as it's simple to clip. However, not great for a garden bed but might be good for naturalization or in a woodsy area. If you want to cover a large space wtihout any effort, this works. They have stayed evergreen in my area. I will probably pull and plant something with flowers instead.

In Zone 8 I have this growing in sandy, alkaline soil in morning sun & afternoon dappled shade. It has 1 bloom set right now (April). I'm...Read More looking forward to many more.

Our area has been in an exceptional drought & this plant has spread a little in the 4 years I've had it; but has not been invasive. If it ever starts raining it might do better here.

I really enjoy the green all year & the flowers are gorgeous.