Q. I have a mature palm tree that dropped seeds onto my lawn. Now I have hundreds of palm shoots growing out of the grass. I’ve tried weed and feed products, but they don’t kill them. Can you give me any suggestions?
A. Palm seeds can live in dry soil for a long time. When they finally get water, they all germinate at once. Keep your lawn thick and dense by mowing high, watered regularly and fertilize it four times a year. Seeds that fall into it have less chance of getting established.
Try mowing palm seedlings. If the seeds come from a palm that doesn’t sucker from the base, there is a good chance that mowing will kill the palm seedlings. Many palms have a single, central bud at the top of its trunk and once it’s killed or removed the palm dies.
I know the task is daunting, but palm seedlings pull from the soil easiest immediately after an irrigation and when they are about 12 inches tall.
As a last resort, try lawn weed killers that contain dicamba (Banvel) or triclopyr (Garlon) as part of the ingredients on the label. Both these weed killers control weeds that become woody. Use the highest rate permissible on the label. Mow the lawn first and then apply the weed killer.