Glaskins Perpetual

Family: Polygonaceae Vegetable

Tart-sweet stalks rise with a jewel-bright blush—crisp, juicy, and richly flavored from first harvest onward.

Glaskins Perpetual forms sturdy, upright clumps with thick, succulent stems that hold their snap for standout fresh use and for simmering into glossy sauces and preserves. A true garden favorite for continuous picking over the season, rewarding patient growers with dependable, flavorful color from spring through early summer.

Light: Full SunMaturity: 60 DaysHabit: Perennial_Crown

Botanical illustration of Glaskins Perpetual

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jun 24th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	60
Sun Requirements	Full Sun
Growth Habit	Perennial_Crown
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	28
Harden Off (days)	7

Culinary Notes

Chef's Note

Glaskins Perpetual’s stalks run crisp and jewel-bright, so they give you a high-impact bite fresh and a glassy, jammy tang once simmered. It’s the kind of rhubarb that keeps its structure in a bake and produces a sauce with real cling—no watery slump.

Best Uses

macerate fresh stalks for a spoonable spring compote (minimal cooking, high shine)
slow-simmer into a thick, glossy sauce for pork, duck, or roast chicken
fold into preserves or jam for a set that tastes clean and bright instead of flat-sweet
bake into pies/tarts where the stalk holds shape and doesn’t collapse into watery filling

Flavor Profile

tart, mouth-watering acidity tart-sweet balance with bright berry-like notes crisp, juicy stalk texture that stays snappy before cooking cooked: turns silky and glossy with a jammy tang

Kitchen Pairings

vanilla strawberry ginger orange zest cinnamon pork

Frequently Asked Questions

What pest or disease is most likely on Rheum rhabarbarum (glaskins perpetual rhubarb), and how do I manage it?

Rhubarb is commonly hit by crown rot/soft rot caused by waterlogged soil, which shows up as a rotting crown and collapsing stalk bases. Plant in well-drained soil, avoid overhead watering so foliage stays dry, and remove any plants with a soft/blackened crown to prevent spread. For leaf problems, watch for leaf spot; remove affected leaves early and improve airflow around the plant to slow reinfection.

How often should I water Rheum rhabarbarum during its main growing phase?

During active stalk production (roughly from late spring through early summer), keep the soil consistently moist but not soggy—about 1 inch (2.5 cm) of water per week depending on rainfall and heat. Water deeply when the top 1–2 inches (2.5–5 cm) of soil dry out, and mulch around the crown to maintain moisture without trapping water. Cut back watering once growth slows to help prevent crown rot in cooler weather.

How can I tell when Glaskins Perpetual rhubarb is ready to harvest?

Harvest when stalks are thick, usually around 10–18 inches (25–45 cm) long, with a firm texture and crisp snap when bent. Pick stalks individually by pulling or cutting near the crown, and stop harvesting once stalks thin out or growth slows to let the plant rebuild energy. In most home gardens, the first meaningful harvest comes about 60 days after strong spring growth begins (days to maturity ~60).