Best Biennial Vegetable Seeds of 2025
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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 10 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 Swiss Chard 'White Silver' Seeds
Swiss Chard 'White Silver' offers a delightful gardening experience with its thick white stems and glossy medium green leaves. You can enjoy the baby leaves in fresh salads, adding vibrant colour and crunch. The crisp stems are perfect for steaming, providing a nutritious side dish. Additionally, the mature leaves serve as an excellent spinach substitute, making them versatile for various recipes. This hardy biennial variety, recognised with an RHS AGM award, is easy to grow and a fantastic addition to your vegetable garden.
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 & Morgan Porbella Leek Seeds
The Porbella Leek Seeds from Thompson & Morgan are an excellent choice for your winter garden. They produce pure white stems topped with thick, deep green leaves, ensuring a visually appealing crop. With their winter hardiness, you can rely on them for good yields even in colder months. You will enjoy harvesting these leeks from mid-autumn through winter, providing you with a steady supply of fresh vegetables during the season. Each packet contains 50 seeds, making it easy to grow your own delicious leeks.
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.
Welldales Giant Utah Celery Seeds for UK Gardens
Welldales Utah Celery Seeds are an excellent choice for home gardeners looking to grow delicious, crisp stalks. These seeds are cold resistant, making them ideal for the UK climate, and they thrive in both full sun and partial shade. You will appreciate their fast-growing nature, allowing you to enjoy fresh and earthy flavours in your soups and salads in just 120 to 140 days. Their space-efficient clumping means you can grow them even in smaller gardens or containers.
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.
Parsnip White Gem Seeds for Your Garden
The White Gem Parsnip Seeds are a delightful addition to your garden, promising fresh and tasty root vegetables. As a biennial plant, they not only enhance your garden's beauty but also offer a strong scent that can attract beneficial insects. By planting these seeds, you will enjoy nutritious parsnips that can be harvested in due time. Additionally, their white colour adds a unique visual appeal, making your garden even more vibrant.
Thompson & Morgan Spinach Perpetual Seeds
The Thompson & Morgan Spinach offers you the chance to harvest fresh spinach almost all year round, making it a fantastic addition to your healthy meals. This hardy biennial variety rarely bolts in its first year, ensuring a lengthy cropping period even in drier soils. You can enjoy abundant, succulent leaves that are perfect for steaming or adding to salads and sandwiches. Each packet contains approximately 250 seeds and comes with easy-to-follow care instructions, making it convenient for you to cultivate your own nutritious greens.
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.
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 35 biennial vegetable seed products and shortlisted 10 quality products. We collected and analyzed 5,101 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 £3.24.
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, Welldales, schone. The seller of top 1 product has received honest feedback from 5,906 consumers with an average rating of 4.3.
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.