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Blue Lobelia

Sale price$12.99

Blue Lobelia features vibrant blue flowers that cascade elegantly, adding a splash of cool color to containers and hanging baskets with its long bloom period.

Long-lasting blooms throughout the season

Low maintenance and hardy plant

Stunning, vibrant blue flowers

Thrives in

ZONE 2ZONE 3ZONE 4ZONE 5ZONE 6ZONE 7ZONE 8ZONE 9ZONE 10ZONE 11
Package of: Buy 1 + Get 2 Free

This plant ships:

Ships Week of May 19th
1 Year Guarantee on all plants

Blue Lobelia - Lobelia sphilitica

The Blue Lobelia (Lobelia siphilitica) flowers in late summer to mid-autumn by producing a raceme of adorable, blueish, two-lipped flowers. The inflorescence rises tall above its finely toothed, wavey-edged foliage that persists along a rigid stalk. They can reach heights of 2-3 ft tall and form clumps that eventually spread throughout the growing area.

Their flowers are long lasting. With their emergence in late summer and early fall, they are not only an important food source for pollinators, but they provide a floral display long after the spring time flowering perennials have died back, rounding out the season for your garden.

Plant Details - Blue Lobelia

Family: Campanulaceae

Hardiness Zones: 4 to 9

Light Requirement: Full sun to partial shade

Water Needs: High

Height: 2 to 4 ft

Spread: 1 to 1.5 ft

Growth Rate: Moderate

Bloom Time: Mid-summer to early fall

Flower Color: Light to dark blue

Wildlife Value: Attractive to pollinators

This delightful perennial is native to Eastern North America and grows in meadows or low wooded areas. They naturally grow in areas with consistently wet soil such as springs, streams and swamps. In the garden, these water loving plants are ideal in moist locations of the yard that receive a little bit of afternoon shade. The Blue Lobelia is known for its medicinal properties. Native Americans used this plant to treat nose bleed, cough and headache. It was even used to treat symptoms of syphilis, from which it was given its Latin name of “siphilitica”.

Landscape Uses and Maintenance - Blue Lobelia

These perennials are pest and disease-free, deer resistant, and easy to grow, requiring little to no maintenance. They prefer moist to wet soils with rich humus. To encourage more flower production, deadhead this plant once the flower spike is finished. To make the plant more compact, trim back the plant after flowering. This plant also appreciates a light mulch in autumn. Plant these charming perennials in areas of full sun that receive some afternoon shade, however they will grow quite well in part shaded. It loves to have its feet wet and can grow in water as a semi-aquatic plant. Consider planting in a rain garden or boarding a stream or pond.

Noteworthy Characteristics

Late summer – autumn flowering, attractive to pollinators, grows well in wet soil.

With its tall flowering stalk, and clump forming growth habit, this perennial will add unique layers of unique texture and vibrant color to your garden to keep you looking forward to their late summer flowering season. Shop for Blue Lobelia plants online at TN Nursery. For 68 years, we have served the landscaping industry and homeowners with specimen plants.

This Is How Your Plants Will Look upon Delivery

Bare Root Plants
Bloom season icon

Bloom Season

Summer

Bloom/Foliage Color icon

Bloom/Foliage Color

Blue

Height at Maturity icon

Height at Maturity

Over 12"

Care icon

Care

Blue Lobelia thrives in well-drained, consistently moist soil. Regularly water to moisten the soil, especially during hot, dry periods. Fertilize lightly in early spring, and remove spent flowers to encourage continuous blooming—mulch to retain moisture and suppress weeds.

Plant Reproduction icon

Plant Reproduction

Blue Lobelia spreads by reseeding, dividing clumps, or taking cuttings.

Shipping date depends on the date displayed and chosen when you order from the product's page.

We only accept returns on plants verified dead. If you think your plants have died, we offer a 1 year warranty, please use this File a Claim Link to verify dead plants and start with return warranty process.

Extended blooming period
Tolerant of moisture
Versatile growing conditions
Blue Lobelia - TN Nursery
Blue LobeliaBuy 1 + Get 2 Free Sale price$12.99

Blue Lobelia has been a great choice for my garden. The cascading blooms are gorgeous and add a lovely splash of color to my outdoor space. Very pleased with it!

Amanda Kevin, Verified Buyer

Zone 4

My Blue Lobelia from TN Nursery is flourishing and looks fantastic. The cascading blooms have transformed my containers, and the rich blue color is stunning.

Andrew Paul, Verified Buyer

Zone 5

The intense blue color and cascading blooms are a real eye-catcher. It’s been easy to care for and looks great!

Ashley Mark, Verified Buyer

Zone 6

What We Ship

The Benefits of Bare Root Plants

Bare root plants are shipped without soil or pots, making them lightweight and easy to handle. They arrive dormant, ready to be planted and thrive as beautiful, healthy additions to your garden.

Cost-Effective

With no heavy pots or soil, you'll save 50-60% on shipping costs, and you can easily plant our plants yourself—no equipment needed, just a spade for digging small holes.

Hassle-Free

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Better Growth

Bareroot dormant plants are more hardy because they adapt better to new environments, with stronger root systems that establish quickly, leading to greater resilience and improved survival rates in various conditions.

Eco-Friendly

Bare root native plants are environmentally friendly because they promote biodiversity, require less water and maintenance, and support local ecosystems, making them a sustainable choice for eco-conscious gardening

Features
Why You Will Love Our Blue Lobelia

Showy Blossoms and Vibrant Greenery:

Its tubular flowers, with their unique petal arrangement, add a bold touch to your garden. The blooms, often solid or striped, are complemented by lush green foliage and a sturdy stem that can reach up to four feet in height.

Perfect for Containers

Ideal for hanging baskets and patio pots, Blue Lobelia’s trailing habit makes it an excellent choice for adding color to containers and vertical spaces.

Attracts Pollinators

The vibrant blue flowers attract bees, hummingbirds, butterflies, and other beneficial insects. By planting Blue Lobelia, you support local pollinators and enhance garden biodiversity.

Seasonal Beauty:

Blue Lobelia typically begins blooming in midsummer and continues to dazzle until fall, from July through October in many regions. Its extended blooming period ensures a long-lasting display of beauty in your garden.

Caring Tips

How do I care for my Blue Lobelia?

Each box contains detailed care instructions and information about your product. But here's the basics.

Care Tips

Blue Lobelia thrives in well-drained, consistently moist soil. Regularly water to moisten the soil, especially during hot, dry periods. Fertilize lightly in early spring, and remove spent flowers to encourage continuous blooming—mulch to retain moisture and suppress weeds.

Light Requirements

Blue Lobelia flourishes in full sun to partial dye. It prefers bright, indirect light or filtered sun, which helps it grow well and produce vibrant blooms. Ensure it receives adequate moisture for optimal health and flowering.

Hardy Planting Zones

2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11

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Customer Reviews

Based on 18 reviews
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E
E Moore
Plants arrived quickly

The plants arrived quickly. Most were the bare root variety but the lobelia were tender little green plants. I had expected bare roots. I hope they make it through the winter!

T
Ted Lyon

Plants appeared healthy and have been planted

I
Irene Howell
I hope they’ll be okay!

I’m not sure where these came from, but I only received them today! (5 days after they were shipped out) I hope they’ll be okay. I planted them today right away. We’ll see what happens. I had Gotten a notification a day or two ago saying they were delivered, but they were not! Only today 9/3/2024.

V
Vickie Tow
Perennial Lobelia

I received the plants very fast. They were packed well. The price was great, it was actually buy one get one free. I ordered 2 and was expecting 4. I think I actually received 7. This made me real happy. It was my first purchase with TN Nursery but it won’t be my last. So excited to watch these grow!

L
Linda Degnan
Blue lobelia and red cardinal

Plants came in great shape… very excited to plant … perfect rainy day to do just that. Happy with this company, can’t wait for spring! ( tried to send video but couldn’t do it )

Frequently Asked Questions

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TN Nursery
TN Nursery