Arnold Arboretum

Propagating Semi-hardwood Cuttings

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[Arnold Arboretum, Dana Greenhouse Classroom]

Tiffany Enzenbacher, Manager of Plant Production, Arnold Arboretum

Enhance your garden! Join Manager of Plant Production Tiffany Enzenbacher to learn how to propagate woody plants from fall cuttings. Students will collect and stick cuttings of several taxa (Ilex and Rhododendron to name a few), and will take their propagules home. After rooting, small plants may be ready to transplant as early as next year. Post-class nurturing will be required.

Arnold Arboretum

Compost Compendium

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Conor Guidarelli, Horticulturist, Arnold Arboretum

[Arnold Arboretum, Weld Hill Building and Landscape]

Horticulturist Conor Guidarelli manages the Arnold Arboretum’s organic materials recycling area and has recently improved the production and quality of the resulting compost. Conor will discuss the components of compost and the nutrients that can be returned to a site when compost is applied. He will explain the mix of brown to green materials, moisture, and aeration. Class participants will start in the classroom and then travel to the Arboretum’s materials yard to see compost in various stages of development. Fee $30
Register at my.arboretum.harvard.edu or call 617-384-5277.

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

Lily Show at the Arnold Arboretum

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Enjoy hundreds of fragrant lily flowers at the 72nd Annual International Lily Show. You will be amazed by the vibrant colors and diversity of scents on display. Discover the genus Lilium! For more information and to contact us email arbweb@arnarb.harvard.edu or call 617.384.5209.

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.