Heather Leach/Penn State University

Now is Time to Crush Lanternfly Eggs Before They Crush Your Landscaping

Posted on April 16, 2021

When invasive spotted lanternflies take hold in an area, real and devastating economic losses to crops, gardens, trees, and other landscaping occur.  You can help take preventative action now, before these bugs hatch out in late April!

Destroying any egg masses found on trees now is a “Stitch in Time”–- people who take preventative action can reduce damage to their own properties.  Residents are also encouraged to patrol parks and public areas too. It is as simple as knowing how to recognize the egg masses and keeping an old credit card on you.

There is no longer a need to report Spotted Lanternfly sightings.  They are already in our area. Try to be careful not to accidentally transport any outdoor items that have egg masses on them.  The removal of  invasive Ailanthus Trees (Tree of Heaven) is also highly recommended.

Here is video of NJ Sec’y of Dept. of Ag. demonstrating a simple egg mass-crushing technique:



Here is a Rutgers Coop Extension Service video on how to scrap masses into a ziplock bag with hand sanitizer, seal, and dispose of bag.

Spotted lanternfly control with Kate Brown – Rutgers Cooperative Extension – YouTube


Once the bugs emerge, there are other (more labor intensive) control methods.  Non-chemical ways include banding tree for nymphs (early May to July) or trapping adults with special circle bags (after July)  which are attached to trunks of trees.

Here is the NJ Dept. of Ag website on SLF explaining why people should be concerned:


Here is an article with more:


Source: Montgomery Twp. Env. Commission, Shade Tree Committee, Open Space Committee, and Montgomery Friends of Open Space