DC’s Famous Cherry Trees: Keeping Them Healthy in the Face of Pests, Floods, and More

a collage of cherry trees showing pink and white flowers
A collage of cherry (Prunus spp.) blossoms, some of which can be found in Washington DC. The species and varieties vary in blossom color, size, and shape. Credit: LiveJapan

Just across Maryland’s border, millions of people flock to Washington, DC at this time of year to witness the spectacular display of 3,000+ cherry trees in bloom around the Tidal Basin. Keeping these famous trees healthy from pests, predicting the timing of peak bloom, and mitigating the threat of rising tides from climate change are among the challenges that need to be addressed to keep these cherished plants in top form for people to enjoy now and for many years to come.

Dr. Lauren Schmitt, an ecologist working with the Burghardt lab in the University of Maryland’s Entomology Department, gives us a close look at the history of these magnificent trees, how pests are managed using an Integrated Pest Management (IPM) approach, how peak bloom times are predicted, and how some of the non-pest threats such as soil compaction and flooding are being addressed.

Read her two part-series on DC’s Famous Cherry Trees:

Part 1: A Case Study For IPM 

Part 2: Variation In The Trees And Varied Threats To Their Health 

Lauren Schmitt, Ph.D. is an ecologist working at the intersection of ecosystem ecology and community ecology. A member of the University of Maryland Burghardt Lab, her research focuses on linking biodiversity and ecosystem function. Much of her work takes place in a forest diversity experiment, “BiodiversiTREE” to assess how tree diversity shapes communities and ecosystem processes.

Featured Video: Keep Bugs Off My Vegetables! How to Deal With Insects in the Garden

Mike Raupp, “The Bug Guy” for the University of Maryland Extension, talks about an easy way to get rid of pesky bugs in your garden called Integrated Pest Management, or IPM.

Integrated Pest Management coordinates the use of pest biology, environmental information, and available technology to prevent unacceptable levels of pest damage— using the most economical means while posing the least possible risk to people, property, resources, and the environment. Mike Raupp gives us five steps for an IPM system: building a knowledge base, monitoring your plants, making decisions, intervening, and keeping records. Incorporate IPM into your garden routine and you’ll be able to safely and organically control damaging insects.

Learn more on the HGIC website.

Are Stink Bugs Bugging You? Are Wasps the Solution?

project stink-be-gone logoSummary: Learn how University of Maryland researchers and University of Maryland Extension (UME) Master Gardeners collaborate on research to reduce brown marmorated stink bug populations in Maryland. Project Stink-be-Gone, by Rebeccah Waterworth

As temperatures cool, many of you probably have had to share your homes with bugs. One of the most notorious of these squatters is brown marmorated stink bug (BMSB) (Fig. 1). It is also a serious pest of many economically important crops. Paula Shrewsbury and I are interested in developing sustainable pest management practices for BMSB, particularly biological control using small wasps (Fig. 2). These critters are also known as parasitoids, and they lay their own eggs inside a stink bug egg. The baby wasp (larva) inside the stink bug egg eats the developing stink bug. After about 10 days, the wasp larvae have become adults, chew their way out of the bug eggs, and fly off to look for new bug eggs to parasitize! Stink bugs do not hatch from the eggs where wasps emerged (see the video at the end of this post).

brown marmorated stinkbug adult
Fig. 1  An adult brown marmorated stink bug, Halyomorpha halys. Photo by David R. Lance, USDA APHIS PPQ from bugwood.org.

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