Growing Rhubarb from Seed: What You Need to Know

Rhubarb can be grown from seed, but there's a catch: most named varieties are hybrids. Here's what that means for your harvest.

The Hybrid Issue

Hybrid rhubarb seeds do not come true. Offspring will vary in stalk color, thickness, flavor, and disease resistance. Only open-pollinated/heirloom types (e.g., 'Victoria', 'Glaskins Perpetual') produce reliable seed.

If You Still Want to Try Seeds

1. Collect seeds from dried flower stalks in late summer.
2. Cold stratify: 4 weeks in moist paper towel in refrigerator.
3. Sow indoors 8–10 weeks before last frost; ¼ inch deep.
4. Germinate at 70–75°F. Transplant after frost.
5. Harvest lightly in year 2; full crops in year 3.

Better: Divide Crowns

For exact clones, divide established crowns in early spring or fall:

• Dig up dormant plant; split into sections with 1–3 buds each.
• Replant immediately, buds 1–2 inches below soil.
• Water well; mulch. Full production next season.

Seed-Starting Basics (If You Proceed)

• Use sterile, soilless mix (peat/perlite/vermiculite).
• Provide 14 hrs light/day (fluorescent/LED).
• Keep moist; avoid damping-off with good air flow.
• Fertilize lightly after true leaves appear (fish emulsion).

For predictable, high-quality stalks, buy crowns or divide existing plants. Seed is for experimentation only.