Tennessee’s moderate climate and rich soils support a wide range of flowering plants throughout the growing season. If you are looking for the Best Flowers To Plant In Tennessee, you have come to the right place. This guide will help you pick flowers that thrive in your local conditions, whether you live in Memphis, Nashville, Knoxville, or the Smoky Mountains.
Tennessee sits in USDA hardiness zones 6a to 8a. This means winters can be chilly but not extreme, and summers are warm and humid. The key is choosing flowers that handle both the heat and the occasional cold snap. Below you will find a full list of top performers, planting tips, and care advice.
Best Flowers To Plant In Tennessee
When you think about the Best Flowers To Plant In Tennessee, consider native species first. They are adapted to local pests, rainfall, and soil types. Non-native flowers can work too, but they may need extra water or fertilizer. Here are the top picks for every part of your garden.
Black-Eyed Susan
Black-eyed Susans are a Tennessee favorite. They bloom from June to October with bright yellow petals and dark centers. These flowers tolerate drought and poor soil. Plant them in full sun for best results.
- Height: 2 to 3 feet
- Spacing: 12 to 18 inches apart
- Water: Weekly, more in dry spells
- Bloom time: Mid-summer to fall
Purple Coneflower
Purple coneflowers are tough perennials that attract butterflies and bees. They grow well in Tennessee’s clay soil. Cut back spent blooms to encourage more flowers. They also make excellent cut flowers for indoor vases.
- Height: 2 to 4 feet
- Sun: Full sun to light shade
- Soil: Well-drained, average fertility
- Deer resistant: Yes
Daylilies
Daylilies are almost indestructible in Tennessee gardens. They come in many colors, from orange to pink to deep red. Each flower lasts only one day, but plants produce many buds. Divide clumps every 3 to 4 years to keep them vigorous.
- Height: 1 to 3 feet
- Sun: Full sun to partial shade
- Bloom time: Late spring through summer
- Maintenance: Very low
Butterfly Weed
Butterfly weed is a type of milkweed that monarch butterflies need. It has bright orange flowers that bloom in summer. This plant prefers dry, sandy soil but adapts to clay. Do not use pesticides near it, as they harm caterpillars.
- Height: 1 to 2 feet
- Sun: Full sun
- Water: Low once established
- Self-seeds: Yes
Lantana
Lantana is an annual in most of Tennessee, but it blooms nonstop from spring until frost. It loves heat and humidity. Plant it in containers or as a ground cover. The flowers attract hummingbirds and butterflies.
- Height: 1 to 3 feet
- Sun: Full sun
- Water: Moderate, drought tolerant
- Colors: Yellow, orange, pink, red
Planting Tips For Tennessee Gardens
Getting flowers into the ground at the right time matters. In Tennessee, the last frost date varies. In western parts, it is around April 1. In eastern mountains, it can be as late as May 15. Check your local extension office for exact dates.
When To Plant
Spring is the best time for most perennials and annuals. Plant after the danger of frost has passed. For fall-blooming flowers like mums, plant in late summer. Bulbs like tulips and daffodils go in the ground in October or November.
- Prepare the soil by removing weeds and rocks.
- Mix in compost or aged manure to improve drainage.
- Dig holes twice as wide as the root ball.
- Place the plant at the same depth it was in the pot.
- Water thoroughly after planting.
Soil Preparation
Tennessee soil can be heavy clay. This holds water and can rot roots. Add organic matter like leaf mold or peat moss. A soil test tells you if you need lime or fertilizer. Most flowers prefer a pH between 6.0 and 7.0.
- Test soil every 2 to 3 years.
- Add 2 to 3 inches of compost each spring.
- Avoid over-fertilizing, which causes leggy growth.
Watering Wisely
Tennessee gets about 50 inches of rain per year, but summers can be dry. Water deeply once a week rather than a little every day. Morning watering is best to reduce disease. Use soaker hoses or drip irrigation to save water.
Native Flowers That Thrive In Tennessee
Native plants are the easiest to maintain. They evolved with local weather and insects. Here are more native options that work well in Tennessee gardens.
Cardinal Flower
Cardinal flower has striking red spikes that bloom in late summer. It likes moist soil and partial shade. Hummingbirds love it. This plant is short-lived but self-seeds readily.
- Height: 2 to 4 feet
- Sun: Partial shade to full sun
- Soil: Moist, rich
- Bloom time: July to September
Bee Balm
Bee balm has showy pink, red, or purple flowers. It spreads quickly, so give it room. The leaves smell like mint when crushed. Powdery mildew can be a problem in humid weather; space plants for good air flow.
- Height: 2 to 4 feet
- Sun: Full sun to partial shade
- Water: Regular
- Attracts: Bees, butterflies, hummingbirds
Wild Columbine
Wild columbine has delicate red and yellow flowers. It blooms in early spring and grows well in rocky soil. This plant is perfect for shady spots under trees. It self-seeds and naturalizes easily.
- Height: 1 to 2 feet
- Sun: Partial shade
- Soil: Well-drained, average
- Deer resistant: Yes
Annual Flowers For Continuous Color
Annuals live for one season but bloom all summer. They are great for filling gaps in perennial beds. Here are the best annuals for Tennessee’s climate.
Zinnias
Zinnias are heat lovers that bloom from June until frost. They come in every color except blue. Plant seeds directly in the ground after the soil warms up. Deadhead regularly to keep flowers coming.
- Height: 6 inches to 4 feet, depending on variety
- Sun: Full sun
- Water: Moderate, avoid overhead watering
- Pests: Powdery mildew in humid weather
Marigolds
Marigolds are easy and reliable. They repel some garden pests. French marigolds are smaller, while African marigolds are taller. Plant them near vegetables to deter nematodes.
- Height: 6 inches to 3 feet
- Sun: Full sun
- Water: Weekly
- Bloom time: Spring to frost
Petunias
Petunias are versatile annuals for baskets and beds. They need regular watering in Tennessee’s heat. Choose trailing varieties for containers and upright types for borders. Remove faded flowers to keep them tidy.
- Height: 6 to 18 inches
- Sun: Full sun to partial shade
- Water: Daily in containers
- Colors: Wide range
Perennials That Come Back Year After Year
Perennials save you time and money. They return each spring with minimal care. Here are some top performers for Tennessee.
Peonies
Peonies are long-lived perennials that can bloom for decades. They need cold winters to set buds, which Tennessee provides. Plant them in full sun with good air circulation. Ants on the buds are normal and harmless.
- Height: 2 to 3 feet
- Sun: Full sun
- Soil: Rich, well-drained
- Bloom time: Late spring
Iris
Bearded iris are popular in Tennessee. They bloom in late spring and come in many colors. Plant rhizomes just below the soil surface. Divide every 3 to 4 years to prevent overcrowding.
- Height: 1 to 3 feet
- Sun: Full sun
- Soil: Well-drained, neutral pH
- Water: Moderate
Hostas
Hostas are for shady areas. They have large leaves and produce spikes of lavender or white flowers. Slugs and snails can damage leaves. Use organic slug bait or diatomaceous earth.
- Height: 6 inches to 3 feet
- Sun: Shade to partial shade
- Soil: Moist, rich
- Foliage: Green, blue, variegated
Flowers For Tennessee’s Hot Summers
Summers in Tennessee can be brutal. Temperatures often hit 90°F with high humidity. Some flowers wilt in these conditions. Others thrive. Here are heat-tolerant choices.
Salvia
Salvia, also called sage, has spikes of blue, purple, or red flowers. It handles heat and drought well. Trim back after the first bloom to encourage a second flush. Bees and butterflies love it.
- Height: 1 to 3 feet
- Sun: Full sun
- Water: Low to moderate
- Bloom time: Late spring to fall
Cosmos
Cosmos are airy annuals with daisy-like flowers. They grow in poor soil and need little water. Too much fertilizer makes them leafy with few blooms. Let some seeds drop for next year’s plants.
- Height: 2 to 5 feet
- Sun: Full sun
- Water: Low
- Colors: Pink, white, orange, red
Portulaca
Portulaca, or moss rose, is a succulent ground cover. It blooms in bright colors all summer. It needs almost no water once established. Perfect for rock gardens and hot, dry spots.
- Height: 4 to 6 inches
- Sun: Full sun
- Water: Very low
- Bloom time: June to frost
Fall Flowers For Tennessee Gardens
As summer fades, fall flowers keep your garden colorful. Chrysanthemums and asters are classic choices. Plant them in late summer for autumn blooms.
Chrysanthemums
Mums come in many colors and shapes. They are perennials in Tennessee but often treated as annuals. Plant them early so roots establish before winter. Pinch back stems until July for bushy plants.
- Height: 1 to 3 feet
- Sun: Full sun
- Water: Regular
- Bloom time: September to November
Asters
Asters have small, star-shaped flowers in purple, pink, or white. They attract late-season pollinators. Cut back in early summer to prevent flopping. They naturalize easily in meadows.
- Height: 1 to 4 feet
- Sun: Full sun to partial shade
- Soil: Average, well-drained
- Water: Moderate
Common Mistakes When Planting Flowers In Tennessee
Even experienced gardeners make errors. Here are pitfalls to avoid.
- Planting too early: Cold snaps can kill tender annuals.
- Overwatering: Clay soil holds moisture; roots can rot.
- Ignoring sunlight: Shade-loving plants burn in full sun.
- Skipping soil prep: Poor soil leads to weak plants.
- Not deadheading: Spent flowers reduce new blooms.
Frequently Asked Questions
What are the easiest flowers to grow in Tennessee?
Black-eyed Susans, daylilies, and zinnias are very easy. They need little care and tolerate Tennessee’s weather.
Can I plant tropical flowers in Tennessee?
Some tropicals like canna lilies and elephant ears grow well as annuals. Dig up bulbs in fall and store indoors for winter.
When should I plant bulbs in Tennessee?
Plant spring-blooming bulbs like tulips and daffodils in October or November. Summer bulbs like gladiolus go in after frost.
Do deer eat flowers in Tennessee?
Yes, deer eat many flowers. Choose deer-resistant plants like lavender, peonies, and butterfly weed. Use fencing or repellents if deer are common.
How do I keep flowers blooming all summer?
Deadhead regularly, water deeply, and fertilize lightly. Choose long-blooming varieties like lantana and salvia.
Final Thoughts On Tennessee Flower Gardening
Tennessee offers a long growing season and diverse conditions. Whether you have full sun or deep shade, there are flowers that will thrive. Start with native plants for low maintenance. Add annuals for extra color. Water wisely and prepare soil well. Your garden will reward you with beauty from spring through fall. Happy planting, and enjoy the blooms.