I am still collecting UCG from Starbucks. The bag says use the grounds within 2-3 weeks. I had planned to use them next spring, partually directly on my lawn and partially in my compost heap. Does UCG lose its "potency" over several weeks or months?

Sorry fragrantgardener. I hit the wrong key and invaded your thread. I meant to start a new one.

This plant, sometimes called "The Green Dragon", apparently is a very invasive plant in many areas because it grows quite fast and seeds very easily, as you have discovered. The best means of control is to remove the parent plant(s) that are producing the seeds that are growing everywhere and repeatedly dig out any new seedlings as soon as you see them. Vinegar, not the normal grocery store 3 to 5 percent actic acid stuff but a stronger horticultural type, may be something that could help, although it only kills the top growth of any plant it contacts and not the roots.

Hi

Are you sure this is Pinellia cordata. From descriptions I have found on the net I gathered that P. cordata is a quite small and not invasive and one reference said that ripe berries should be green. It should be easy to recognize P. cordata from other Pinellias from the leaf shape.

Best wishes

I am a grower and propagator. Green Dragon, Pinellia tripartita, is invasive. Pinellia cordata is not. It doesn't set any seed. It is ever blooming, flowers smell like Juicy Fruit gum and every leaf produces only two bulbils, one at the base of the leaf which doesn't go anywhere and one on the leaf apex that will roll off and can move away from the main plant a bit. It is just a few inches tall and IMO, very well behaved.