Rhubarb Seeds – Historic Heirloom Perennial Tart Classic

Ontario Grown
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Clear duties overview for US customers at checkout: Grand Seeds covers 50% tariffs on your order!

In Stock - Shipped within 5 days

Contains about 1 gram of seeds

$1.95

SKU: GS-9420-RHU-DT

Free shipping on orders over $50 (in Canada)

Organicly grown

Non GMO

Description

Rhubarb (Rheum rhabarbarum) is a legendary, long-lived heirloom perennial valued for its thick, succulent leaf stalks, distinctive tart flavor, and impressive architectural presence. Forming robust, heavy clumps that stretch 3 to 4 feet tall and wide, it features massive, ruffled green leaves borne on thick, ruby-red to deep rose-pink petioles. Highly cold-hardy and resilient, Rhubarb stands as one of the very first spring crops to emerge, producing heavy yields for up to 15 to 20 years once established. Its tangy, mouth-watering stems are a timeless favorite for baking, pies, jams, compotes, and refreshing spring preserves.

Specifications

Plant Name: Rhubarb (Rheum rhabarbarum)
Cultivar Type: Heirloom, Open-Pollinated
Plant Class: Ultra-Hardy Cool-Season Perennial Vegetable
Color: Deep ruby-red to rosy-pink stalks fading to green near massive, dark green leaves
Plant Characteristics: Large, mounding architectural habit (36–48 inches tall & wide / 90–120 cm), thick crisp stalks, deeply crinkled foliage, distinctly tart
tangy flavor: tangy flavor
Suitable Space: Dedicated perennial vegetable plots, garden corners, raised beds, edible landscape borders
Season: Early Spring to Early Summer Harvest (Perennial)
Best Time for Sowing (Zone 6b): Start indoors late February to March (soak seeds in warm water for 2 hours before sowing); transplant outdoors May after heavy frost danger passes. Alternatively, direct sow outdoors late April to May.
Sunlight: Full Sun to Partial Shade (thrives in full sun; appreciates light afternoon shade in hot spells)
Watering Needs: Moderate to High (requires rich, organic soil with steady moisture during spring stalk growth)
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What is included?

Contains about 1 gram of seeds

Check out the growing specs for the specific organic heirloom seeds you bought.

Good to know

Exceptionally hardy, long-lived perennial that returns reliably for decades with minimal maintenance
Earliest spring food crop to harvest, providing fresh tart stalks long before annual crops mature
Dramatic architectural foliage adds bold visual structure and texture to edible landscapes

Plant leaves contain high levels of oxalic acid and are toxic—only the thick leaf stalks are safe to eat
Requires patience from seed: stalks should not be harvested in year one, and only lightly in year two, to allow deep root establishment for heavy long-term yields

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