How to Successfully Grow Rhubarb from Seed

Are you a fan of rhubarb, but struggling to find mature plants to grow in your garden? Don’t worry – you can easily grow rhubarb from seed! In this comprehensive guide, we will walk you through the process of propagating rhubarb from seed, whether you live in Zones 2b-7 where it can be grown as a perennial, or in Zones 8 and above where it thrives as an annual. Let’s get started!

Understanding Rhubarb: A Little Background

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Rhubarb belongs to the Polygonaceae family, known for its thick-noded leaf and flower stems. Historically used primarily as a medicine, rhubarb gained popularity as an edible vegetable in the 18th century. Early American botanist John Bartram even grew rhubarb from seed, highlighting its versatility and appeal.

Today, rhubarb is a staple in northern states, appearing in a variety of dishes from pies to cocktails. It’s important to note that while the stalks are delicious, the leaves are toxic and should be avoided.

Sourcing Rhubarb Seeds

To get started with growing rhubarb from seed, you can collect seeds from mature plants or purchase seed packets. If you’re collecting seeds, allow the plant to flower and produce seed heads before harvesting. Alternatively, you can buy heirloom varieties like ‘Victoria’ from reputable sources.

How to Propagate Rhubarb

Growing Rhubarb as a Perennial (Zones 2b-7)

Start seeds indoors about two months before the last frost date, or sow directly in the garden when the soil temperature reaches at least 50°F.
Use seed starting trays or peat pots filled with a potting mix or garden soil amended with compost.
Soak seeds in warm water before planting and maintain adequate moisture for germination.
Transplant seedlings into larger containers or directly into the garden after germination.
Ensure the plants receive at least six hours of sunlight daily and provide proper spacing for growth.
Harvest stalks in about two years when they reach 12-18 inches in length.

Growing Rhubarb as an Annual (Zones 8 and above)

Direct sow seeds outdoors in late August to early October or start indoors by the end of July.
Transplant seedlings outdoors when they are three to six inches tall and have true leaves, in September or October.
Provide shade protection if the weather is still warm, and harvest stalks in late spring before the summer heat arrives.

Tips for Successful Rhubarb Growth

Ensure adequate sunlight, well-draining soil, and proper spacing for each plant.
Water seedlings thoroughly, but avoid waterlogging the soil.
Harden off seedlings before transplanting them outdoors.
Harvest stalks when they reach the appropriate length, and enjoy the fruits of your labor in delicious recipes.

Wrapping Up

Growing rhubarb from seed is a rewarding experience that allows you to witness the plant’s lifecycle from start to finish. Whether you choose to cultivate it as a perennial in cooler zones or as an annual in warmer regions, following these guidelines will help you achieve success in your garden. So go ahead, give it a try, and savor the sweet taste of homegrown rhubarb in your favorite recipes!

Have you explored growing rhubarb from seed before? Share your experience in the comments below! And for more plant propagation tips, be sure to check out our guides on growing tomatoes, propagating basil, and starting annuals indoors from seed. Happy gardening!