The University of Maryland Extension Home & Garden Information Center (HGIC) is conducting a brief survey of its Ask a Gardening Expert service. This service is conducted by Maryland Certified Professional Horticulturists, employed by HGIC, who answer home gardening, lawn care, and pest management questions that are submitted through the HGIC website.
I invite you to participate in this 5-10 minute survey.
Your participation will help us better understand your use of our service and how you prefer to receive information. Results of the survey may help us improve our service for future users. The survey will close on July 31, 2018.
Thank you for your time and valuable input.
Christa K. Carignan, Coordinator, Digital Horticulture Education, Home & Garden Information Center
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I am a horticulture consultant at the University of Maryland Extension’s Home & Garden Information Center (HGIC). Every spring we receive many questions about ground bees that make burrows and holes in lawns and ornamental garden beds. Homeowners are alarmed when they notice many bees flying over an area for several weeks in the spring. They ask questions like: What type of bee is this? Do they sting? Can I mow in the area? When will they go away? How do I get rid of them for good? The bees look intimidating because they tend to aggregate together. It may look like they are tending a busy underground hive, but each bee is typically solitary and digging individual holes. Since a hive is not being defended, the bees are not aggressive.
If you do not know the type of bee you are dealing with, it is concerning. I have a landscaped hill in my backyard that is prime habitat (loamy/sandy soil and good drainage) for ground-nesting bees. For the past several spring seasons, hundreds of bees have flown over an area on my hill. Our entomologist, Mary Kay Malinoski, wanted to identify these bees because many types of bees are important pollinators. Our staff collected samples. The bees were picked up by Lindsay Barranco, a graduate student studying ground bees at the University of Maryland Bee Lab. The bee samples were sent to the USDA Bee Lab for identification.
The ground bees were identified as gentle ground nesters, Cellophane Bees (Colletes thoracicus), also called Plasterer Bees. They are important pollinators of plants and are not aggressive or defensive. They are solitary bees and are not prone to sting humans. They have short lives. After the females lay the next generation and provide food, they will die off. Encourage everyone to tolerate these gentle ground nesters and important pollinators.
By Marian Hengemihle, Horticulture Consultant, Certified Professional Horticulturist, University of Maryland Extension Home & Garden Information Center
Do you need help to identify bees or other insects found around your yard or home? Send clear photos of your insects to HGIC’s Ask a Gardening Expert.
Elymus hystrix got its common name, Bottlebrush Grass, by having seed heads in the shape of a bottle-washing brush. Both the seed heads and the stems are coated with a white wax, making this a gorgeous ornamental grass for your garden, especially when situated against a dark background.
The Nature of Bottlebrush Grass
In the winter, the basal foliage is lively and green, even during the coldest of winters. As a cool-season grass, Bottlebrush does most of its growth in spring. Flower stems are sent up in June and seeds are set in July.
Bottlebrush is native throughout Maryland, but only in soils with good calcium availability. That makes it uncommon in the Coastal Plain, where soils tend to be nutrient poor. Even there, it does grow wild where shell deposits have enriched the soil.