Dear Neil: This is my peace lily. It was sitting in my living room eight feet from two windows. I have since moved it to my living room where there is little sunlight. Will that get rid of the leaves with black on their ends? Will that help it produce flowers?

I have perhaps 20 peace lilies in my greenhouse and a couple in our house. That browning is due to letting the plant wilt. You can use very sharp scissors to tailorcut the leaves to remove the browned tissues, but nothing will green those specific leaves back up again. It might help to repot it into the next size pot, or perhaps back into the same pot with fresh potting soil. Trim off all the dead stems and leaves. It will grow best in very bright indoor light. It sounds like your living room may be too dark. Spathiphyllums typically bloom a couple of times a year if they are growing vigorously. They do that on their own accord.

Dear Neil: How can I kill this weed in my beds and also in my St. Augustine without harming my lawn and landscape?

It’s obviously not a grass, but a broadleafed plant instead. Spot treat with a broadleafed weedkiller containing 2,4-D and probably two other herbicides combined. Now that temperatures are cooling you should be fine spraying within the St. Augustine, and as long as you don’t spray onto adjacent shrubs, groundcovers, etc., you should be fine treating the weeds in the rock beds.

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