Rhubarb
Rheum x hybridum
About it
- Kind
- Vegetables · Perennial
- Family
- Polygonaceae
- Mature size
- to 3 ft × 4 ft
- Hardiness zones
- Zones 3–8
- Sun
- Full sun
- Spacing
- 36 in apart
- Soil depth in a pot
- At least 18 in
- Soil pH
- 6–6.8
- Water
- About every 5 days
When to plant
We don't have planting times for Rhubarb yet.
Planting partners
No cited companion planting notes for Rhubarb yet.
Safety for pets and children
- Cats Listed as a problem for cats (NC State Extension) — Medium severity; in the leaves and roots; toxic principle: Anthraquinone glycosides and soluble oxalates, also possibly calcium oxalate crystals
- Dogs Listed as a problem for dogs (NC State Extension) — Medium severity; in the leaves and roots; toxic principle: Anthraquinone glycosides and soluble oxalates, also possibly calcium oxalate crystals
- Horses Listed as a problem for horses (NC State Extension) — Medium severity; in the leaves and roots; toxic principle: Anthraquinone glycosides and soluble oxalates, also possibly calcium oxalate crystals
- Children No information in our sources
If a pet or child eats part of this plant, call your vet or poison control.
Read from NC State Extension ↗.
"No information" means our sources do not say, not that the plant is harmless. A non-toxic listing is not a reason to let anyone eat a plant.
Pests and diseases
No pest or disease notes for Rhubarb yet.
Check the label and your local extension service before using any product.
Where this comes from
- family npgsweb.ars-grin.gov ↗ GRIN page: Rheum ×hybridum Murray
- Most facts UMN Extension ↗ Backfilled by 0041. Pre-0041 rows recorded one source for the whole row; per-field attribution was never captured and is not invented here.
- toxicity NC State Extension ↗ toxic for cat, dog, horse from the page's "Problem for" listing. Severity, parts and principle are the page's poison characteristics for the whole plant. Page matched to this row by common name (Rhubarb); the Toolbox files it as Rheum rhabarbarum where the row records Rheum x hybridum. Not cited by the row before this batch.