More Information
| Botanical Name |
Rheum rhabarbarum |
| Seeds Per Pack |
25 |
| Life Cycle |
Perennial |
| Min. Time to Germinate |
21 Days |
| Max. Time to Germinate |
45 Days |
| Depth to Sow Seeds |
1/8 in. |
| When to Sow |
Indoors 8-10 weeks before last spring frost |
| Growing Height |
24-36 in. (60-90 cm) |
| Plant Spacing |
24-36 in. (60-90 cm) |
| Hardiness |
USDA Zone 3a: to -35F, USDA Zone 3b: to -30F, USDA Zone 4a: to -25F, USDA Zone 4b: to -20F, USDA Zone 5a: to -15F, USDA Zone 5b: to -10F, USDA Zone 6a: to -5F, USDA Zone 6b: to 0F, USDA Zone 7a: to 5F, USDA Zone 7b: to 10F, USDA Zone 8a: to 15F, USDA Zone 8b: to 20F |
| Sun Exposure |
Full Sun, Sun to Partial Shade |
| Danger |
Parts of plant are poisonous if ingested |
| Bloom Color |
White/Near White |
| Bloom Time |
Mid-Summer |
| Other Details |
Average Water Needs; Water regularly; do not overwater |
| Soil pH Requirements |
5.6 to 6.0 (acidic), 6.1 to 6.5 (mildly acidic), 6.6 to 7.5 (neutral) |
| Days to Harvest |
730 (2 years) |
| Propagation Methods |
By dividing rhizomes, tubers, corms or bulbs (including offsets), From seed; direct sow after last frost, From seed; sow indoors before last frost |
| Seed Collecting |
Allow seedheads to dry on plants; remove and collect seeds |
Rhubarb’s thick stalks are popular for making delicious pies, cobblers and preserves. Rhubarb from seed can be harvested starting as soon as the second season and is very productive. For the average family, three plants will be enough. The plants are long-lived and can be propagated by dividing mature plant crowns. A perennial vegetable!
Caution: Do not eat the leaves as they contain poisonous oxalic acid.
