Cornell Cooperative Extension

Nassau County
Tomato plants under grow lights

tomato seedlings

Raspberries

Raspberries

Fact Sheets

Many new fact sheets have been added to this section of our web site to provide you with even more up to date horticulture information. 

Topics are listed on the left of this page, or use the search box on the top right of every page to find a gardening fact sheet.

Adult Firefly (lightning bug) Genus: Photinus Family: Lampyridae Order: Coleoptera Class: Hexapoda (including Insecta) Area: Entomology - General Entomology

Fireflies

Fireflies are not only fun to watch, they also provide natural pest control! Lacewings, spiders and lady beetles also control predators in your garden.

Read more
winterbourne cactus in bloom

Cacti and Other Succulents

All cacti are succulents but not all succulents are cacti. Other than cactus, members of various plant families and genera belong in the succulent category.

Read more
Apple tree with fire blight

Fire Blight

Fire blight is a bacterial disease spread by insects to the blossoms, twigs, and foliage of plants in the rose family. Learn about disease symptoms, the disease cycle, and measures of control.

Read more
Tomato plants under grow lights

Growing Plants Under Lights

Learn about growing plants under grow lights. Understand proper light placement and light selection.

Read more

Last updated June 14, 2021

Fact Sheets

Useful Links

Visit the Northeast Regional Climate Center at Cornell University

Visit the  Northeast Regional Climate Center at Cornell University.

Visit Cornell Garden Based Learning website

Become a Member!

Click here for our Residential and Professional Membership page.

Events

See more