Lake and McHenry Counties

Join 4-H today

Announcements & Highlights

A group of people forming a heart with their bodies and hands

Your voice matters! Join us & help shape the future of our community!

Thank you to everyone interested in the 2026 Extension Council. Please register for our next informational session in McHenry County this November. Come for a night of networking with other community members to learn how you can help us impact Lake and McHenry counties.

Farm

Master Gardener helpline

Have a gardening question that you need help answering? Call or email our Master Gardener Helpline and a U of I Extension Master Gardener will answer your questions at NO COST! Walk-ins are welcome as well.

Hands with dirt in them and food scraps on ground

Read more about building a culture of composting in greater Chicagoland

What's so important about compost? Food waste is a pressing environmental concern in Illinois. In Cook County — and in many counties around the state — it accounts for up to 37% of landfill material.

Exciting Events and Series

The Great Seed Event logo

The Great Seed Event 2026

Saturday, February 7th 10-2 pm McHenry County's third annual all-things-seeds event: vegetables, natives, flowers and herbs. Vendors, demos and a seed swap! By Center for Agrarian Learning at McHenry County College

Many hands holding seeds

Save the Date for Lake County Seed Expo

Mark your calendars for March 7, 2026! The Lake County Master Gardeners' Seed Expo will be held at the College of Lake County. More info to come.

A person planting mother in laws tongue plants in pots

Lake County Garden Learning Series

February 12, 2025 - December 10, 2025 This year we have a fantastic variety of topics being presented by The University of Illinois Extension Master Gardeners and Educators along with Educators and Ecologists from the Lake County Forest Preserve District and the Solid Waste Agency of Lake County (SWALCO).

Events
News Releases
Youth winners pose with their winning creations.
Young builders bring stories to life in 4-H challenge
URBANA, Ill. — From mad scientists to haunted trees, Illinois 4-H youth let their imaginations run wild in October’s statewide 4-H Creating with Building Bricks Challenge, themed “Monster Mash: Build a spooky creature or monster.” More than 80 youth from across Illinois...
A deer jumping into a road in front of a car on a foggy morning
Time change raises risk of driver collisions with wildlife
URBANA, Ill. — This Sunday at 2 a.m. Central Standard Time, daylight saving time will end, with clocks set back one hour. One of the most noticeable effects of “falling back” is that people will find themselves driving home from work or for after-school activities as the sun sets, putting them...

Connect. Learn. Grow

A leaf with discoloration and insects bites

Plant Problems? Insects Invading? What's that Weed?

Call our Master Gardener Helpline and a U of I Extension Master Gardener will answer your questions at NO COST! From insects to pollinator gardens, crabgrass to milkweed, if you have a question, they can help!
A person in prairie grass with binoculars

Become a Master Naturalist

Volunteer as a Master Naturalist to facilitate conservation and restoration in your community and educate others about natural resources.
A plate of healthy food, a bottle of water and exercise equipment

Eat well, stay active, and save money

Find tasty recipes, shopping tips, and activities to keep you and your family healthy.
Sea Grant Illinois-Indiana Logo

Sea Grant Illinois-Indiana

Sea Grant uses research, outreach, and education to bring the latest science to Great Lakes communities. Sea Grant helps strengthen and preserve ecosystems and communities in southern Lake Michigan and beyond.

Check out Illinois Extension’s complete offerings