As you may have heard, cicadas can damage small trees (like wimpy ornamentals) as they lay their eggs in the branches. The Chicago Sun-Times has a good article titled Arbor Day takes cover against cicada swarm, that will give folks with wimpy trees strategies for dealing with the upcoming emergence. If you’re concerned, read the article.
Tips:
Use netting to protect trees. If you start looking now, you can probably find some at a local Home Depot or garden supply store. Beat the rush.
Delay plantings until July.
Don’t use pesticides. It isn’t worth it. Bee populations are in bad shape so we don’t want to do any collateral damage to other species. After 11 years of running this web site, I’ve heard a few stories about family pets dying after consuming pesticide covered cicadas or grass. Don’t do it!
Native species of trees, like oak and maples, fare much better against cicadas because they’ve co-evolved for 100′s of centuries. Wimpy ornamentals from Asia fare a lot worse. Plant only proud, American trees.
If you’re looking for historical information about previous brood emergences try Cicada Central’s Magicicada Database. Click on the link that reads Magicicada Database and then follow the instructions (hint: search for the 13 (XIII) brood and the year 1990).
In northern Illinois and surrounding areas, three species of Magicicada emerge from the soil every 17 years for a brief above-ground visit. Brood XIII will emerge when soil temperature reaches approximately 65° F. Spectrum data loggers are busy tracking soil temperature near Spectrum headquarters in northern Illinois to estimate when to expect their arrival.
You must read What good is a cicada? in Beth Botts’ The Chicago Gardener (Chicago Tribune). Stay tuned to Beth’s blog for more articles like Nymphs? no problem!
The Return of the Cicadas 17-Year cicada documentary will be airing on PBS in the Brood XIII emergence area soon. As soon as next Thursday, 4/26. Set your Tivo/DVR to record it!
Periodical cicadas are among the most unique creatures in the animal kingdom. After spending 17 years underground as juveniles, they emerge for a brief, cacophonous population explosion aboveground, where they transform into adults, mate, lay eggs and die off after only a few weeks.
WFYI presents Return of the Cicadas, an original local documentary produced in association with the Indiana University Research and Teaching Preserve. Producer Samuel Orr followed the life cycle of Brood X, which made its momentous ascension in the spring of 2004. It accounted for one of the largest insect outbreaks on Earth. Many different broods exist, on unique 17-year schedules. Brood XIII is due to arrive in northern Indiana this May.
Through stunning close-up video and time-lapse photography, Orr and others offer an amazing glimpse at the lives of these enigmatic insects. The documentary was made possible by the research of IU biologist Keith Clay through grants provided by the National Science Foundation. The NSF and Science Magazine recognized the production with a national award for a short 5-minute film on the Brood X outbreak.