Mummy Berry is a disease that can be controlled easily by home gardeners.

Mummy Berry in Community Garden Blueberries

You probably have seen them and not given them much notice, growing among  your blueberry fruits. They look like something just went wrong in fruit development.   These are mummy berries and they are actually part of a fungal pathogen, Monilinia vaccine-corymobosi.  This is a blueberry disease!

Mummy berries are caused by a pathogen

Over the season mummies fall off of the plant and oversummer and overwinter on the ground.  When conditions are just right in the spring, these bodies will germinate and can produce 650,000 disease-causing ascospores.  The ascospores can re-infect your plants creating a disease cycle.

Mummy Berry Disease Cycle from Jade Florence, Oregon State University

Control is not difficult for hobby blueberry growers

This disease affects leaves and affects the fruits when the pathogen is spread to the flower bloom, by wind or by insects.  For commercial growers this can be a serious problem.  For the casual blueberry grower it is much easier.  Simply remove the mummies and throw them away.  Also, check the ground to remove those mummies that have fallen.

Remove mummies from the blueberry plant area

For those of you interested in pathology, Jade Florence has an excellent article, Mummy Berry, in The Plant Health Instructor.  If you are unsure if mummy berry is your problem, contact your local UGA Extension office for assistance.  If you don’t have blueberries in your community garden, they are a great addition and easy to plant.

Happy Gardening!

Becky Griffin

Becky Griffin

Community and School Garden Coordinator at UGA Extension
Becky Griffin helps school and community gardeners succeed! This includes organizing school garden teacher training for the summer months, managing the Center's garden presence on the web, and using social media to connect gardeners to the latest research-based gardening information.

Some of her recent and current work includes collaborating with partners on urban agriculture, working with school gardeners on STEM goals, and assisting communities in starting community gardens. In 2016 Becky launched the Pollinator Spaces Project which encourages community and school gardeners to add pollinator spaces.This project has been expanded in 2017 to the Georgia Pollinator Census project.Ask her about it!
Becky Griffin

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