Best Biennial Vegetable Seeds of 2026
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Biennial vegetable seeds are a type of seed that produces plants that typically require two growing seasons to complete their life cycle. These plants are known for producing vegetables that are typically harvested in the second year of growth. Biennial vegetables such as carrots, onions, and cabbage require a longer growth period and are often planted in the fall to overwinter before being harvested the following year. These seeds are a great option for gardeners looking to add variety to their vegetable garden and enjoy the unique flavour and texture of biennial vegetables.
At a Glance: Our Top Picks
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Top 7 Biennial Vegetable Seeds
Thompson and Morgan Swiss Chard 'Bright Lights' Seeds
Grow your own delicious Swiss Chard with the Swiss Chard 'Bright Lights'. This exciting variety offers a stunning array of bright, mixed colours, adding vibrancy to your garden from summer through to autumn. Ideal for both beginner and expert gardeners, it is an easy-to-grow hardy annual and biennial vegetable. Cultivating your own vegetables has never been more rewarding, providing you with fresh produce right from your garden.
Thompson & Morgan Leek 'Carentan 2' Seeds
Leek 'Carentan 2' Seeds are perfect for your autumn and winter gardening needs. These hardy biennial plants produce thick, straight stems that are ideal for hearty winter stews, soups, and casseroles. You can enjoy fresh leeks as you harvest them from autumn to early winter, providing you with flexibility in your cooking. With 300 seeds in one packet, you'll have plenty to grow your own delicious leeks throughout the colder months.
Broccoli Burbank F1 Hybrid White Sprouting Seeds
The Burbank F1 Hybrid Broccoli by Thompson & Morgan is a strong and vigorous variety, perfect if you want a reliable and robust plant in your garden. It produces a high yield of large, creamy-white spears, giving you plenty of fresh broccoli to enjoy. This variety is the first British-bred F1 hybrid white sprouting broccoli, meaning it has been carefully developed for quality and performance. With 25 seeds in a packet, you can easily grow your own healthy vegetables at home.
Swiss Chard 'Lucullus' Seeds for Your Garden
The Swiss Chard 'Lucullus' Seeds from Thompson & Morgan are perfect for your vegetable garden. This RHS AGM variety produces large, white stems that are delicious when cooked like asparagus and served with butter. You can also use the deep green leaves as a tasty alternative to spinach, providing versatility in your meals. Additionally, the flower stalks can be prepared similarly to sprouting broccoli, expanding your cooking options. With its ability to be harvested in both autumn and spring, this crop ensures a continuous supply of fresh produce for your kitchen.
Thompson and Morgan Purple Rain Broccoli Seeds
Purple Rain Broccoli Seeds from Thompson and Morgan are perfect for anyone looking to grow their own delicious purple sprouting broccoli. You can enjoy harvesting from summer through autumn, providing fresh vegetables for your meals. This variety is robust and heat tolerant, ensuring it thrives in various conditions, making it a fantastic choice for your kitchen garden or allotment. Furthermore, these seeds are easy to sow and grow, so you can quickly enjoy the benefits of home gardening.
Thompson and Morgan Broccoli Spouting Summer Purple Seeds
The Summer Purple Broccoli Seeds from Thompson and Morgan offer an excellent addition to your garden. This British bred variety provides delicious purple spears from July to November, allowing you to enjoy fresh vegetables throughout the summer and autumn. Its good heat tolerance means you can plant it in full sun, making it ideal for sunny spots in your garden. With regular picking, this robust variety yields high amounts, ensuring you get the most out of your efforts. It is easy to pick and perfect for various planting locations, including garden borders and vegetable pots.
Hardy Spinach Perpetual Never Runs to Seed
The Spinach Perpetual Thompson & Morgan is a hardy and prolific variety that suits even autumn and winter gardens perfectly. Because it rarely runs to seed in its first season, you can enjoy a longer harvesting period without worrying about the leaves becoming bitter or woody. This trait also means the plant thrives well on dry ground, making it easier for you to grow in less-than-ideal conditions. Its succulent leaves are ideal for fresh, hassle-free salads, providing you with a reliable and tasty vegetable option year-round.
Frequently Asked Questions (FAQs)
1. What vegetable is biennial?
A biennial is a plant that requires two growing seasons to complete its life-cycle. Beets, Brussels sprouts, cabbage, carrots, cauliflower, celeriac and celery, chicory and endive, collard greens, kale, kohlrabi, leeks, onions, parsley, parsnip, rutabaga and turnips are all commonly grown biennial plants.
2. What are biennial seeds?
Biennials are seedlings one year, flower and set seed the next year. Although their life cycle is two years, you will find that they appear continuously in your garden. The seedlings of the second year becoming the flowers of the next year and so on.
3. What does biennial vegetable mean?
List of Biennial Vegetables. Botanically speaking, biennials are plants that grow one season and bloom the following spring after a period of winter chilling.
4. What is one example of a biennial plant?
biennial, Any plant that completes its life cycle in two growing seasons. During the first growing season biennials produce roots, stems, and leaves; during the second they produce flowers, fruits, and seeds, and then die. Sugar beets and carrots are examples of biennials. See also annual, perennial.
During our biennial vegetable seed research, we found 20 biennial vegetable seed products and shortlisted 7 quality products. We collected and analyzed 2,419 customer reviews through our big data system to write the biennial vegetable seeds list. We found that most customers choose biennial vegetable seeds with an average price of £3.38.
The biennial vegetable seeds are available for purchase. We have researched hundreds of brands and picked the top brands of biennial vegetable seeds, including Thompson & Morgan and more.
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.