Flowers

Serving Mukwonago, Waukesha, and East Troy

From stunning perennials to vibrant annuals and lush hanging baskets—find your favorites at Thomas Greenhouse & Gardens.

Perennials vs. Annuals

What's the Difference?

  • Perennials: Return year after year, bloom in cycles, lower maintenance over time.
  • Annuals: Complete their life cycle in one season, often bloom longer and more vibrantly in a single year.

Why Choose One, the Other or Both?

  • Perennials for structure and reliability
  • Annuals for color variety and seasonal impact

Explore Flower Options

Annual Flowers

Looking for bold seasonal color for garden beds, containers, porch pots, and hanging baskets? Explore our Annual Flowers page.

Native Wisconsin Plants

Looking for pollinator-friendly flowers and foliage plants that thrive in Wisconsin conditions? Explore our Native Wisconsin Plants page.

Perennials

Looking for long-lasting garden color that returns each season? Visit us in Mukwonago to shop our perennial selection. More perennial information is coming soon.

Close-up of vibrant magenta petunia flowers overflowing from a hanging basket in a garden setting.

Hanging Flower Baskets

  • Instant color and impact for porches, patios, balconies
  • Mix of trailing and upright plants for a lush, full look
  • Popular choices: 
  • Petunias, calibrachoa, fuchsias, trailing lobelia, impatiens

Indoor vs. Outdoor Flower Choices

Not sure how to care for your new green friends? We help you find plants that fit your light, space, and lifestyle. Get friendly advice on watering, repotting, pest control, and how to revive tired plants—because every plant deserves a second chance.

Outdoor Favorites:

  • Sun-lovers: Coneflowers, daylilies, marigolds, zinnias
  • Shade-tolerant: Impatiens, begonias, astilbe

Indoor-Friendly Blooms:

  • African violets, peace lilies, orchids, kalanchoe
  • Tips for light, humidity, and keeping blooms healthy inside

What Works Best Where?

  • Garden beds: Perennials, sun-loving annuals
  • Containers: Compact annuals, trailing plants
  • Baskets: Petunias, calibrachoa, impatiens
  • Window boxes: Marigolds, begonias, lobelia
  • Indoors: African violets, orchids, peace lilies

Frequently Asked Questions

What’s the difference between annuals and perennials?

Annuals complete their life cycle in a single season—they grow, bloom, and die in one year, but often provide continuous, vibrant color all summer. Perennials return year after year, blooming in cycles and gradually expanding to fill your garden with reliable beauty over time.

Hanging baskets look their best with flowers that spill over the edges and keep blooming all season. Popular choices include petunias, million bells (which look like mini petunias), fuchsias, and impatiens. These flowers fill out quickly, offer lots of color, and are easy to care for—perfect for brightening up porches and patios.
To enjoy blooms all season, choose long-blooming varieties, deadhead (remove spent flowers) regularly, and feed your plants with a balanced fertilizer. Make sure to water consistently—especially in containers and baskets—and provide the right amount of sun for each plant.

Visit Our Garden Center in Mukwonago

Visit Thomas Greenhouse & Gardens in Mukwonago for expert advice and the best selection of flowers for your space.