What are the opening hours?

Monday 8am - 4:30pm Tuesday 8am - 4:30pm Wednesday 8am - 4:30pm Thursday 8am - 4:30pm Friday 8am - 4:30pm

Lake County Master Gardener: University of Illinois Extension

Home
United States
Grayslake, IL
Lake County Master Gardener: University of Illinois Extension

Call Directions Website Contact the organization

The University of Illinois Extension Master Gardener program is an educational, volunteer program designed to assist in educating the local community.

11/09/2026

It's fall, so that means mums!
The mum, as we know it, did not enter our continent in cultivation until around 1800, when it was imported across the Atlantic by a New Jersey grower interested in collecting novel plants from Europe. From there, the rest is history, with mums being the second-highest-value floriculture crop in the US, only second to Poinsettias.

This time of year, garden centers around the area are teeming with a quintessential fall favorite, the Chrysanthemum. This versatile ornamental is more commonly

11/08/2026

As naturalist E.O. Wilson famously explained long ago: Insects are the little things that run the world. Without insect pollinators, 80% of all plants, and 90% of all flowering plants, would disappear, as would the food webs that support mammals, reptiles, amphibians, birds, and freshwater fishes.

Wilson’s message was clear: there will be no lions, tigers, or bears; birds, bats, bunnies — or even humans — in a world without insects.

The World Wildlife Fund reported in October 2024 that between 1970 and 2020, Earth had lost two-thirds of its wildlife.

11/07/2026

Whether you think of them as "trash pandas" or you love them because of Jimothy (Seattle's short-spined raccoon mascot) there is no mistaking their trill and nightly shrieks.

Common Raccoon (Procyon lotor).The trashcan raider that makes a t...

11/06/2026

Native to southeastern Europe and western Asia, horseradish is a perennial member of the Brassicaceae (mustard) family. Although its leaves are edible, it is mainly grown for its fleshy, pungent roots.

Horseradish can be propagated in early spring from root cuttings that contain a growing point, usually saved from the previous fall’s harvest.

11/05/2026

Less than 1% of insect species are considered pests, so it pays to get to know the good guys before reaching for an insecticide.

Beneficial insects are sometimes known as garden heroes because of their important roles in the landscape.

11/04/2026

It's the annual Good Growing Halloween Spooktacular, and this year's costumes are as sweet as the topic. Join Chris the Chloroplast, Emily as Rosie the Riveter, and Ken as Cotton Candy as they take a deep dive into one of the world's most important plant products: sugar!

It's the annual Good Growing Halloween Spooktacular, and this year's costumes are as sweet as the topic.

11/03/2026

Today, a growing coalition of “Beaver Believers”—including scientists, ranchers, and passionate citizens—recognizes that ecosystems with beavers are far healthier, for humans and non-humans alike, than those without ....

This week the Everyday Environment team recorded a live episode at ...

11/02/2026

I am sure everyone can recognize this year-round guest....

Canada goose (Branta canadensis).The big boisterous goose at ever...

11/01/2026

Before you call it a season, consider planting a few bulbs. It’s one of the easiest gardening projects you’ll do all year, and one of the most rewarding. After all, if you can dig a hole, you can plant a bulb.

Both flowering bulbs and garlic need a period of winter chilling to perform their best, which makes fall the perfect time to plant.

10/31/2026

A wreath made from bagworms?! Terrifying!!!!!

Horrors may lie in unmarked graves in the gardens of those you least suspect — maybe even your own! Here are scary tales from the garden.

Address

100 US-45
Grayslake, IL
60030

Opening Hours

Monday	8am - 4:30pm
Tuesday	8am - 4:30pm
Wednesday	8am - 4:30pm
Thursday	8am - 4:30pm
Friday	8am - 4:30pm

Telephone

(847) 223-8627

Website

https://extension.illinois.edu/lm/lake-county-master-gardeners

Alerts

Be the first to know and let us send you an email when Lake County Master Gardener: University of Illinois Extension posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.