Summer Clearance Sale

September 17–23 in Mukwonago, WI

Summer is winding down, and Thomas Greenhouse & Gardens is making room for what comes next.

This week’s Summer Clearance Sale brings savings on shrubs, perennials, potted trees, hydrangea trees, houseplants, Halloween décor and carnivorous plants.

At the same time, fall favorites are arriving around the greenhouse, from mums and annuals to pumpkins, gourds, corn stalks and straw bales.

Stop in September 17–23 and see what’s waiting around the greenhouse.

Summer Clearance Savings

50% OFF Shrubs

Fill a gap, add structure or bring something new into the landscape while shrubs are half off.

40% OFF Perennials

Add color and texture now while giving perennials time to begin settling in before colder weather arrives.

40% OFF Potted Trees

Thinking ahead to next summer? This is a good time to add shade, structure and long-term interest to the yard.

30% OFF Hydrangea Trees

Bring height, flowers and structure into the landscape with hydrangea trees now 30% off.

25% OFF Houseplants

Bring a little more green indoors while houseplants are 25% off.

25% OFF Halloween Décor

A little spooky, a little fun and right on time for the season ahead.

15% OFF Carnivorous Plants

If you’ve been curious about carnivorous plants, this is a fun time to add one to your collection.

Fall Favorites Are Here

Fall color is starting to take over the greenhouse, with mums and annuals ready for porches, patios, containers and garden beds.

4.5" Fall Annuals

$6.99 each
Buy 3 or more for $5.50 each

6" Round Fall Annuals

$8.99 each
Buy 3 or more for $7 each

8" Fall Mums

$8.99 each
Buy 3 or more for $7 each

Porch season is officially here — pumpkins, gourds, corn stalks and straw bales are ready to go.

Plant Bingo

Plant Bingo is back Saturday, September 26!

Join us for five rounds of friendly competition, plant prizes, light snacks, coffee and plenty of time with fellow gardeners and plant lovers.

Saturday, September 26
10:00am arrival | Bingo begins at 10:30am

Reserve your seat and come ready to play.

Reserve Your Seat

September at Our Greenhouse

There’s a lot changing around Thomas Greenhouse & Gardens right now. Summer clearance is making room for what comes next, while mums, annuals and seasonal favorites are bringing a whole new look to the greenhouse.

Stop in for the Summer Clearance Sale through Wednesday, September 23, see what’s arriving for fall and ask us if you need help finding the right plants for your space.

We’ll see you at Thomas Greenhouse & Gardens in Mukwonago!

Sale Terms

  • No rain checks.
  • No price adjustments.
  • Selection, size and colors may vary.
  • Some exclusions apply. See store for details.
  • First come, first served. No holds.
  • No exceptions to sale terms.

Offers and prices valid while supplies last Thursday, September 17 through Wednesday, September 23, 2026.