Best Lobelia Flower Seeds of 2026

Toby Butcher Avatar
Toby Butcher
Last Updated: 5 Feb 2026

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Lobelia flower seeds are a popular choice for gardeners looking to add a splash of colour to their outdoor space. These tiny seeds produce delicate, trumpet-shaped flowers in shades of blue, purple, and white, which bloom throughout the summer months. Lobelia is a versatile plant that can be used to add interest to borders, hanging baskets, and containers. It is also a favourite of pollinators, attracting bees and butterflies to the garden. With its ease of growth and stunning display of flowers, lobelia seeds are a great choice for both novice and experienced gardeners alike.

At a Glance: Our Top Picks

Premier Seeds Direct Lobelia Cascade Mix Cover #TOP 1
Premier Seeds Direct Lobelia Cascade Mix
ftb score rating icon 9.9
Trailing Lobelia Cascade Mix Seed Pack Cover #TOP 2
Trailing Lobelia Cascade Mix Seed Pack
ftb score rating icon 9.8
Premier Seeds Direct Lobelia White Lady Seeds Cover #TOP 3
Premier Seeds Direct Lobelia White Lady Seeds
ftb score rating icon 9.6

Top 6 Lobelia Flower Seeds

Premier Seeds Direct Lobelia Cascade Mix

Premier Seeds Direct
0.4 GRAMS
Premier Seeds Direct Lobelia Cascade Mix Cover
PREMIER SEEDS DIRECT - Lobelia - Cascade Mix/Mixed - 0.4 GRAM ~ Approx 12,000 Seeds - Trailing

The Lobelia Cascade Mix by Premier Seeds Direct is perfect for enhancing your garden with trailing flowers. You should sow the seeds 4-8 weeks before the last frost, ensuring they are kept warm at 18-24°C. By sowing the seeds on the surface of good quality compost and gently firming it down, you create an ideal environment for growth. Keeping the soil damp, while using a polythene bag to seal in humidity, helps retain moisture and reduces the need for frequent watering. Importantly, do not exclude light, as it is essential for germination.

What We Like
High seed count (approx. 12,000)
Easy to grow indoors
Trails beautifully in gardens
Retains humidity for seedlings

Trailing Lobelia Cascade Mix Seed Pack

Trailing Lobelia Cascade Mix Seed Pack Cover
Trailing Lobelia Cascade Mix 7000 Seeds + Plant tag Lobelia Pendula Balcony Flower

The Happy Green Shop Lobelia is a fantastic choice for garden enthusiasts. These seeds are easy to start and grow quickly, making them ideal for beginners. They are a popular annual flower that brings vibrant colour to a range of settings. You can use Lobelia plants in containers, hanging baskets, or as edging along your flower garden, which offers versatility in your landscaping. With a love for blooming all summer long, these plants ensure your garden stays lively throughout the season.

What We Like
Easy to start and grow
Striking, vibrant colours
Versatile for various settings
Blooms all summer long
#TOP 3

Premier Seeds Direct Lobelia White Lady Seeds

Premier Seeds Direct
Green,White
Premier Seeds Direct Lobelia White Lady Seeds Cover
PREMIER SEEDS DIRECT - LOBELIA - TRAILING - WHITE LADY - 0.4 GRAM ~ APPROX 12,000 FLOWER SEEDS

The Premier Seeds Lobelia Seeds are perfect for anyone looking to brighten their garden. By sowing the seeds 4-8 weeks before the last frost, you can ensure a vibrant display of flowers. Keeping the soil damp, while sealing it in a polythene bag, helps retain humidity, making germination easier. Once seedlings are ready, transplanting them in bunches allows for healthy growth. Gradually acclimatising them to outdoor conditions ensures they thrive in their new sunny spot.

What We Like
Easy to sow and grow
High germination rate
Retains humidity well
Beautiful trailing flowers
#TOP 4

Premier Seeds Direct Lobelia Crystal Palace Seeds

Premier Seeds Direct
Purple
0.4 Grams
Premier Seeds Direct Lobelia Crystal Palace Seeds Cover
PREMIER SEEDS DIRECT - Lobelia - Crystal Palace - 0.4 GRAM ~ Approx 12,000 Flower Seeds

The Lobelia Crystal Palace Seeds from Premier Seeds Direct are ideal for gardeners looking to create vibrant flower displays. You can sow these seeds 4-8 weeks before the last frost, ensuring they thrive in warm conditions. Keeping the soil damp helps promote germination, which typically takes 10-21 days. Once the seedlings are ready, transplant them to trays for better growth. Gradually acclimatising them to outdoor conditions ensures a successful transition to your garden.

What We Like
Easy to germinate
Ideal for sunny spots
Large quantity of seeds
Minimal packaging
#TOP 5

Mr Fothergill's Lobelia Sapphire Trailing Seeds

16814
Blue
Mr Fothergill's Lobelia Sapphire Trailing Seeds Cover
Mr Fothergill's 16814 Flower Seeds, Lobelia Sapphire Trailing, Blue

Mr Fothergill's Lobelia Seeds are a wonderful choice for your garden. As a half hardy annual, these seeds will flower in the same year you sow them, providing immediate colour. With their trailing habit, they are perfect for window boxes and hanging baskets, allowing you to create stunning displays. You will enjoy cascades of rich blue flowers adorned with tiny white eyes, adding charm to any space. By trimming back the plants after the first blooms, you can encourage further flowering, prolonging the beauty of your garden.

What We Like
Immediate flowering in same year
Perfect for window boxes
Rich blue flowers
Encourages further blooming
#TOP 6

Premier Seeds Direct Lobelia MRS CLIBRAN Seeds

Premier Seeds Direct
Blue,White
Premier Seeds Direct Lobelia MRS CLIBRAN Seeds Cover
PREMIER SEEDS DIRECT - Lobelia - MRS CLIBRAN - 0.4 GRAM ~ Approx 30,000 Flower Seeds

The Lobelia MRS CLIBRAN Seeds from Premier Seeds Direct are ideal for planting 4-8 weeks before the last frost. By sowing these seeds under cover at a warm temperature of 18-24C, you ensure optimal growth conditions. It's essential to keep the soil damp to aid germination, which typically takes 10-21 days. Using a polythene bag can help retain humidity, making it easier for you to care for the young seedlings until they are ready to be transplanted.

What We Like
High germination rate
Easy to grow
Minimal packaging
Professional quality seeds
Buying Guide Image

Frequently Asked Questions (FAQs)

1. Is lobelia easy to grow from seed?

Lobelia seeds are very tiny, rather dust-like, but do not be scared, it is easy to sow and grow them. Actually one of the easiest annual flower and the rewards of the shiny flowers are really worth the try to grow these beauties in your garden.

2. Do lobelia come back every year?

Lobelia cardinalis is a short-lived perennial, so divide it every 2 years in spring to maintain its vigour....Perennial lobelia.

3. How long does it take to grow lobelia from seed?

Sow thinly and just press into seed-starting formula. Keep the soil moist at 65-75 degrees F. Seedlings emerge in about 20 days.

4. Can I plant lobelia seeds now?

Sow lobelia seeds in February or March. The seeds are tiny, so you could mix them with some silver sand to make the job easier. They need a temperature of 18-24C (65-75F) to germinate, so use a heated propagator or cover with a polythene bag and keep somewhere warm.

Editor's Notes

During our lobelia flower seed research, we found 86 lobelia flower seed products and shortlisted 6 quality products. We collected and analyzed 7,805 customer reviews through our big data system to write the lobelia flower seeds list. We found that most customers choose lobelia flower seeds with an average price of £1.90.

The lobelia flower seeds are available for purchase. We have researched hundreds of brands and picked the top brands of lobelia flower seeds, including Premier Seeds Direct, Happy Green Shop, Mr Fothergills.

Written by
Toby Butcher Avatar

Toby Butcher is a Horticulturist, and he earned his title as a Master Gardener in 2016. Toby has acquired a 25-year experience as a home gardener planting, designing, grooming vegetables and flowers. He is the leader of a plant group in Durham. Toby owns a blog where he publishes articles on growing and growing your flowers at home, in a vase, or in a garden.