Overview
Alaska wild rhubarb is a perennial herb in the buckwheat family (Polygonaceae), botanically classified as Polygonum alpinum (syn. Aconogonon alpinum). It produces edible stalks that resemble cultivated rhubarb in appearance and tartness, though the plant is more closely related to knotweed than to true rhubarb (Rheum spp.). The stalks are harvested in spring and early summer when tender, and have a sharp, sour flavor similar to common rhubarb.
Origin and history
Polygonum alpinum is native to mountainous regions across the Northern Hemisphere, including parts of Europe, Asia, and North America. In Alaska, it grows wild in subalpine and alpine meadows, riverbanks, and disturbed soils. The plant is sometimes confused with Aconogonon alaskanum, a closely related species that differs in leaf size and achene characteristics [1].
Varieties and aliases
- Alpine knotweed (common English name)
- Aconogonon alpinum (synonym)
- Polygonum alpinum (accepted scientific name)
Culinary uses
The stalks are harvested when young and tender, typically before the plant flowers. They can be eaten raw, often peeled and dipped in salt or sugar to offset the tartness. More commonly, they are cooked into sauces, jams, syrups, and pie fillings in the same manner as cultivated rhubarb. The leaves are not consumed. Alaska wild rhubarb pairs well with sweeteners (sugar, honey) and is sometimes combined with berries in preserves.
Cross-cuisine context
Alaska wild rhubarb is a direct analogue to cultivated rhubarb (Rheum rhabarbarum) in culinary use, though the two plants are not closely related botanically.
Notes for cooks
- Harvest stalks when they are young and tender, typically in early spring. Older stalks become fibrous and woody.
- Only the stalks are edible; the leaves are not consumed.
- Alaska wild rhubarb can be used in recipes similarly to cultivated rhubarb, though the wild variety may be more tart and require additional sweetener.