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biennials

An Introduction to Biennial Plants
Image: iStockphoto.com/lvenks

An Introduction to Biennial Plants

During their first year, biennial plants grow leaves, stems, and roots before literally chilling out. When they bloom in their second season, they produce fruits and seeds before dying.

Investigate these flowering plants, which require cold but have their life cycle shortened in extreme climate conditions.

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Apple Breeding

Apple Breeding

Horticultural scientist Jim Luby breeds varieties of fruit plants. Learn how he developed the Honeycrisp apple, and why math, chemistry, biology, and genetics figure into his work. More...

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University of Wisconsin, Madison
Annual, Perennial, Biennial?

Annual, Perennial, Biennial?

Blooms may be blooms, but they may have different life cycles. If you’re wondering which flowers are annuals, perennials, or biennials — or what that even means, read on. More...

Article
Texas A&M University
Reveal the Red: Exploring the Chemistry of Red Flower Pigments

Reveal the Red: Exploring the Chemistry of Red Flower Pigments

Flowers are renowned for their bold and beautiful colors, but plant chemistry can be complex. Conduct an experiment to examine what makes one red pigment more vibrant than another. More...

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Science Buddies
Dianthus Barbatus

Dianthus Barbatus

Discover the hardy but delicate-looking sweet William, possibly a multitasking plant. Best grown as a biennial, it’s actually a short-lived perennial and suitable as an annual. More...

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Missouri Botanical Garden
Mullein Herb: Verbascum Thapsus

Mullein Herb: Verbascum Thapsus

The flowers and leaves of the weedy biennial mullein can serve a variety of uses. Watch and learn how to harvest a plant that can keep feet warm, provide medicinal properties, and serve as toilet paper in a pinch. More...

Video
Learning Herbs
Vernalization

Vernalization

Biennials don’t flower until the second season of their life cycle, and then only after they chill out. Investigate their adaptation called vernalization. More...

Article
National Gardening Association
Which Apple Trees Are Prone to Being Biennial?

Which Apple Trees Are Prone to Being Biennial?

A heavy crop isn't an annual event for all apple varieties. Find out which of your favorites produce tasty and delicious fruit every other year…and why. More...

Article
Garden Guides

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