perennial

Glaskin's Perpetual rhubarb

Rheum rhabarbarum 'Glaskin's Perpetual'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

48 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

High

Humidity

Average

Lifespan

10+ years

Native To

Siberia

Toxicity

Leaves toxic to humans and pets

The Story

Plant Bio

A perennial vegetable known for its long, edible stalks. Produces harvestable stalks throughout the growing season, making it a perpetual variety.

Bloom Period:

EarlyLate

Uses & Benefits:

Rheum rhabarbarum provides lush, large leaves that add bold foliage to shade gardens.

The edible stalks are used in culinary recipes like pies and jams.

Supports pollinators with its early spring flowers and provides habitat for beneficial insects.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Tuck seeds into moist soil in early spring for best germination.
Mist cuttings regularly to maintain humidity and promote root development.
Transplant seedlings when they are 4-6 inches tall, typically in early spring or fall.
Mulch around the base to retain moisture and suppress weeds.
Water deeply once a week during dry spells for healthy growth.
Fertilize with a balanced organic fertilizer in early spring and mid-summer.

Pro Tip

Use well-draining, rich soil and ensure consistent moisture for lush, vigorous growth.

Keep It Thriving

Care Guide

Do

Water consistently to keep soil moist but not waterlogged 🌱
Apply organic compost annually to boost soil fertility
Prune back old or damaged leaves to encourage new growth
Mulch to conserve moisture and regulate soil temperature

Don't

Avoid overwatering to prevent root rot ❌
Do not fertilize late in the season to prevent weak growth
Avoid disturbing the roots excessively during transplanting
Refrain from harvesting too early to allow proper plant establishment

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Fertilize
Harvest
Mulch
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Herbaceous perennial borderEdible garden centerpieceShade garden with large, lush leaves

Companion Plants

nasturtiums marigolds lettuce spinach brassicas

Multiply

Propagation Methods

Good to Know

Common Questions

Glaskin's Perpetual rhubarb questions

What zones can Glaskin's Perpetual rhubarb grow in?

Glaskin's Perpetual rhubarb is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Glaskin's Perpetual rhubarb deer resistant?

Yes — Glaskin's Perpetual rhubarb is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Glaskin's Perpetual rhubarb bloom?

Glaskin's Perpetual rhubarb typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Glaskin's Perpetual rhubarb need full sun?

Glaskin's Perpetual rhubarb does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.