Best Biennial Flower Seeds of 2025

Steven Taylor Avatar
Steven Taylor
Last Updated: Jan 8, 2025

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Biennial flower seeds are a great option for gardeners who want to add some variety to their flower beds. These seeds produce plants that take two growing seasons to reach maturity and bloom, which means they require a bit of patience and planning. However, the wait is worth it as biennial flowers often produce more vibrant and long-lasting blooms than their annual counterparts. Popular biennial flower seeds include foxgloves, hollyhocks, and Canterbury bells. With proper care and attention, these seeds can yield stunning and colorful flowers that will add beauty to any garden.

At a Glance: Our Top Picks

Seed Needs Double Majorette Blend Hollyhock Flower Seeds Cover #TOP 1
Seed Needs Double Majorette Blend Hollyhock Flower Seeds
ftb score rating icon 9.9
SVI Hollyhock Seeds - GIANT DANISH MIX Cover #TOP 2
SVI Hollyhock Seeds - GIANT DANISH MIX
ftb score rating icon 9.8
Fragrant English Wallflower Seeds by S-pone Cover #TOP 3
Fragrant English Wallflower Seeds by S-pone
ftb score rating icon 9.6

Top 10 Biennial Flower Seeds

Seed Needs Double Majorette Blend Hollyhock Flower Seeds

B0062QJOY4
Mixed
Seed Needs Double Majorette Blend Hollyhock Flower Seeds Cover
Seed Needs, Double Majorette Hollyhock Seeds - Heirloom Seeds for Planting Alcea rosea - Mixed Biennial Flower That Attracts Pollinators to The Garden (1 Pack)

Seed Needs' Double Majorette Blend Hollyhock Flower Seeds offer high-quality, non-GMO, heirloom biennial seeds that are stored in a temperature-controlled facility and packed in tear-resistant, moisture-resistant packaging. Each packet includes generous quantities of fresh seeds and detailed sowing information, and features a beautiful illustration of the variety. With correct sowing, you'll see results in a matter of days.

What We Like
High-quality, non-GMO, heirloom biennial seeds
Stored in a temperature-controlled facility
Tear-resistant, moisture-resistant packaging
#TOP 2

SVI Hollyhock Seeds - GIANT DANISH MIX

SVI
SVI106826
11 feet
SVI Hollyhock Seeds - GIANT DANISH MIX Cover
Hollyhock Seeds - GIANT DANISH MIX - Rare Biennial - 11 Feet Tall - 25 Seeds

SVI Hollyhock Mix Seeds are perfect for early planting to enjoy beautiful flowers in the first year. With deep crimson, light pink, rose, red, yellow, and white blooms, these seeds reseed themselves, giving you continuous plants annually. The included planting instructions make it easy for you to grow these flowers in full sun. Standing at an impressive height of 11 feet, these seeds offer a variety of colors and the convenience of self-reseeding for a stunning garden display.

What We Like
Early flowering
Self-reseeding
Height of 11 feet
#TOP 3

Fragrant English Wallflower Seeds by S-pone

Fragrant English Wallflower Seeds by S-pone Cover
300+ Mix English WallFlower Seeds Perennial Fragrant Biennial Non-GMO

The English Wallflower Seeds by S-pone are a delightful addition to any garden. These perennials thrive in cooler climates, making them perfect for spring displays. You can enjoy their sweet fragrance and vibrant colors—ranging from red to pink—while attracting bees and butterflies to your garden. These flowers are also excellent for rock gardens and containers, adding beauty and charm wherever planted. By dead-heading regularly, you can extend their blooming period, ensuring your garden remains colorful for weeks on end.

What We Like
Fragrant flowers
Attracts pollinators
Long blooming period
Ideal for cool climates
Versatile garden use

300+ Gloriosa Daisy Rudbeckia Hirta Flower Seeds

green
300+ Gloriosa Daisy Rudbeckia Hirta Flower Seeds Cover
300+ Gloriosa Daisy Rudbeckia Hirta Flower Seeds, Black-Eyed Susan, Biennial, Beautiful! from USA

These flower seeds can grow up to 24-36". To ensure proper germination, keep the soil temperature at 70F and press the seeds into the soil. Starting the seeds indoors on top of the fridge in a covered container can provide the perfect germination conditions. Keep the soil moderately moist and ensure proper air circulation. Transplant the seedlings to larger containers or outdoors once a few sets of leaves have developed.

What We Like
Large quantity of flower seeds
Can grow up to 24-36"
Starting seeds indoors can provide optimal germination conditions
#TOP 5

Seed Needs Black Hollyhock Flower Seeds

Dark Mauve / Black
Seed Needs Black Hollyhock Flower Seeds Cover
Seed Needs, Black Hollyhock Seeds - 100 Heirloom Seeds for Planting Alcea rosea - Great for Gothic Gardens, Open Pollinated Biennial That Attracts Pollinators (1 Pack)

Seed Needs Black Hollyhock Flower Seeds offer high-quality, non-GMO, and open-pollinated seeds that are stored in a temperature-controlled facility. The packaging is tear-resistant and moisture-resistant, ensuring the seeds stay fresh. Each packet includes detailed sowing information and a beautiful illustration of the variety. The quantity of seeds is generous, allowing for sharing or storing for future seasons. Germination is quick and easy, with results visible in a matter of days.

What We Like
Non-GMO and open-pollinated seeds
Tear-resistant and moisture-resistant packaging
Generous quantity of seeds
Quick and easy germination
#TOP 6

Seed Needs Gloxiniaeflora Foxglove Seeds

B01KM5IF1I
Mixed
Seed Needs Gloxiniaeflora Foxglove Seeds Cover
Seed Needs, Mixed Gloxiniaeflora Foxglove Seeds for Planting - Heirloom & Open Pollinated Biennial Flowers - Perfect for Butterfly Gardens & Insectaries (1 Pack)

Seed Needs Foxglove Seeds will add vibrant bell-shaped flowers to your garden, available in lovely shades like pink, purple, and lilac. Growing up to 60 inches tall, these plants are ideal for creating a stunning backdrop. They are perfect for butterfly gardens, drawing in butterflies, honeybees, and hummingbirds, enhancing the beauty and biodiversity of your outdoor space. With seeds stored in a moisture-controlled facility, you can expect high quality and freshness, ensuring a successful planting experience.

What We Like
Attractive bell-shaped blooms
Ideal for butterfly gardens
High-quality, fresh seeds
Generous seed quantity
#TOP 7

Seeds4planting Canterbury Bells Mix

SEEDS4PLANTING
Seeds4planting Canterbury Bells Mix Cover
Seeds4planting - Seeds Canterbury Bells Double Mix Biennial Flowers

Seeds4planting Canterbury Bells offers a vibrant mix of biennial flowers that are 100% Non-GMO. You can plant these seeds with confidence, knowing they were grown in fertile and ecological areas. Each package comes with easy-to-follow planting instructions in English, ensuring you have the guidance you need for successful growth. The seeds are also professionally packed and labeled, which makes it convenient for you to identify them. While you can expect up to 600 seeds per package, the brand encourages you to reach out if the quantity does not meet your expectations, ensuring customer satisfaction.

What We Like
Non-GMO seeds
Clear planting instructions
Professionally packed
High seed quantity
#TOP 8

100pcs Mixed Hollyhock Seeds

Generic
Mult-Color
100pcs Mixed Hollyhock Seeds Cover
Generic 100pcs Vibrant Mixed Hollyhock Seeds - Hardy Biennial with Double Flowers, Perfect for Wildflower & All Garden Types

Experience the beauty of Generic Hollyhock Seeds, a mix of vibrant colors that will enhance your garden. These seeds attract pollinators like hummingbirds and butterflies, creating a lively ecosystem. Enjoy blooms from May to October, adding color all summer. Whether in a cottage garden or wildflower mix, these hollyhocks thrive anywhere. Easy to plant with detailed instructions, these seeds offer a rewarding experience for all gardeners.

What We Like
Vibrant color palette
Attracts pollinators
Extended blooming season
#TOP 9

Outsidepride Foxglove White Flower Seeds

OUT-3131
White
5000 Seeds
Outsidepride Foxglove White Flower Seeds Cover
Outsidepride 5000 Seeds Biennial Digitalis Foxglove White Flower Seeds for Planting

The Outsidepride Foxglove Seeds will enhance your garden with their stunning white blooms. These biennial plants grow to heights of 3 to 4 feet, making them a striking addition to any landscape. With large, trumpet-shaped flowers that bloom from the bottom up, you’ll enjoy a continuous display of color throughout the summer. They thrive in rich, moist soil and can be grown in full sun or partial shade, depending on your climate. Easy to cultivate from seed, these foxgloves will bring elegance and beauty to your borders, beds, and woodland gardens.

What We Like
Elegant white flowers
Easy to grow
Continuous summer blooms
Suitable for various climates
#TOP 10

Seed Needs White Forget Me Not Seeds

White
Seed Needs White Forget Me Not Seeds Cover
Seed Needs. White Forget Me Not Seeds - 1,000 Heirloom Seeds for Planting Myosotis alpestris - Biennial/Annual Wildflowers to Plant an Outdoor Flower Garden (1 Pack)

The Seed Needs Forget Me Not offers you the joy of growing beautiful white flowers that are easy to establish from seed. These plants grow to a height of 16 to 18 inches and bloom all summer long, bringing life to your garden until frost arrives. With generous seed quantities, you can share with loved ones or save extras for next season. Plus, the seeds are stored under optimal conditions to ensure freshness, allowing you to enjoy quick germination results when sown correctly.

What We Like
Easy to grow
Generous seed quantity
Freshness guaranteed
Long-lasting blooms
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are biennial seeds?

Biennial plants grow leaves, stems and roots the first year, then go dormant for the winter. In the second year the plant will flower and produce seeds before dying. Biennials are usually sold with perennials and include sweet william, foxglove, money plant and hollyhock.

2. What is an example of a biennial flower?

Examples of biennial plants are members of the onion family including leek, some members of the cabbage family, common mullein, parsley, fennel, Lunaria, silverbeet, Black-eyed Susan, Sweet William, colic weed, carrot, and some hollyhocks.

3. Do biennial plants reseed?

During the biennial's second season, the biennial plant growth completes with the formation of flowers, fruit, and seeds. The stem of the biennial will elongate or “bolt.” Following this second season, many biennials are reseeded and then the plant usually dies.

4. How do you grow biennial flowers?

You can get around the two-year cycle of biennial ornamentals by starting seeds in the summer instead of the spring and putting the plants outdoors in the fall. The plants will then go through the winter season and be ready to bloom their first full year in the garden.

Editor's Notes

During our biennial flower seed research, we found 24 biennial flower seed products and shortlisted 10 quality products. We collected and analyzed 13,661 customer reviews through our big data system to write the biennial flower seeds list. We found that most customers choose biennial flower seeds with an average price of $6.54.

The biennial flower seeds are available for purchase. We have researched hundreds of brands and picked the top brands of biennial flower seeds, including Seed Needs, SVI, S-pone, Harley Seeds, SEEDS4PLANTING. The seller of top 1 product has received honest feedback from 2,010 consumers with an average rating of 4.8.

Written by
Steven Taylor Avatar

Steven Taylor grew up in a small town called Beaufort in South Carolina and his passion for building and woodworking has led him to master the latest garden gadgets. He always holds every chance to patch up or sand down his beloved garden. There are various novel technologies in his articles.