Question From: North Smithfield, Rhode Island, United States
Q: what causes tiny holes in our weigelia shrub leaves? also have monet weigela, those leaves are turning brown around the edges. What causes that?
The holes in the leaves are probably caused from flea beetles. Too late in the season to treat, however cleaning up all dead plant material around the shrubs this fall and mulching with an organic mulch such as wood chips will help control them next season. They begin to hatch around May or early June so spraying with neem oil on both sides of the leaves to the point of run off is recommended. Leaves turning brown on the edges is usually caused by lack of water. Best And Happy Yardening, Nancy
Q: Thank you for your quick response. Now, where do I purchase neem oil?
Bog boxes and garden centers carry it or you can buy it online. Best And Happy Yardening, Nancy