Arnold Arboretum

Gardening for Butterflies and Moths

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Colin McCallum-Cook, Horticultural Technologist

Learn how to attract butterflies and moths to your garden and cater to their unique lifecycle requirements in this program focused exclusively on lepidopteran-friendly gardening techniques. Lepidopteran conservation in New England is more important than ever, as many formerly common species are now threatened with extirpation. Colin McCallum-Cook will also show you how to use citizen science applications to monitor species in your garden and contribute valuable data to the cause of lepidopteran conservation. Fee $32

Register at my.arboretum.harvard.edu or call 617-384-5277.

Arnold Arboretum

The Substance of Soil

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Soil is the basis of survival. Without soil, humans and most other living beings could not exist. Conor Guidarelli, who has dug deep into the soils of the Arnold Arboretum will present an overview of soil, from its formation and components to its properties. He will discuss ways to analyze soil quality and health to determine whether or not amendments are needed based on the soil outcome/use desired. Participants are encouraged to bring a pint glass jar with about a cup of soil in it to class.

Arnold Arboretum

Sprout Lands: Tending the Endless Gift of Trees

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William Bryant Logan, Certified Arborist, Founder and President of Urban Arborists, Inc., and Author

Thursday, June 27, 6:30–7:45pm
Arnold Arboretum, Hunnewell Building

When his company was asked to pollard trees in front of the Metropolitan Museum of Art in New York City, William Bryant Logan was stymied. This prompted him to research and learn this ancient way of pruning that prompts thick nests of sprouts to form on major branches. The irony here is that pollarding (and the similar practice of coppicing) had been the preeminent way in which humans had tended trees–from the last ice age to the Industrial Revolution. What would have seemed the most mundane of tasks to a villager in the Middle Ages had slipped from use, and even memory, in the twenty first century. Hear Logan speak of the many ways in which these lost ancient arts (including pruning, hazel creating living hedges, growing oak for ships) created and supported human cultures all over the world and how we once lived closely as partners with trees, as we can only hope to do again.

Arnold Arboretum

Bonsai Behind the Curtain: Uncovering Their Care and Cultivation

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Tiffany Enzenbacher, Manager of Plant Production

Wednesday, June 26, 5:30-6:30pm
Arnold Arboretum,  Larz Anderson Bonsai Collection

Join Manager of Plant Production, Tiffany Enzenbacher, for an evening exploration into the oldest dwarfed plant collection in the United States. As one of the caretakers of the Arboretum's bonsai collection, Tiffany will highlight many of the procedures used by staff to maintain the health of these captivating specimens. For cancellations due to weather, call 617 384-5209

Free, registration is requested and limited at my.arboretum.harvard.edu

Arnold Arboretum

Get Your Hands Dirty! – Soil Science

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Arnold Arboretum Staff and Volunteers

Sunday, June 23 2019, 2:00pm-4:00pm
Arnold Arboretum, Hunnewell Lawn 

This is part of the new Science in Our Park Series. Come to the Arnold Arboretum and be a scientist! Get your hands onto scientific tools, use your observation skills and share your findings with others. Get Your Hands Dirty will allow you to stick your hands into the soil and really get to know it. You will have a chance to use digital probes, collect data and then share that data with other scientists for a day.