Elm Oyster Mushroom

Hypsizygus ulmarius (formerly Pleurotus ulmarius) | Sustainably Harvested by Silver Lake Mushrooms

Distinctive, firm, and subtly flavorful, Elm Oyster mushrooms are a gourmet treasure with rugged elegance. These wood-loving mushrooms grow naturally on elm, box elder, or beech trees—often high in the canopy—offering a culinary experience that blends rustic character with clean, refined texture.

At Silver Lake Mushrooms, we responsibly cultivate Hypsizygus ulmarius using organic indoor methods to ensure a consistent, fresh, and visually impressive mushroom suitable for chefs, retailers, and specialty markets.

What Makes Elm Oyster Mushrooms Special?

Unmistakable Structure & Habitat

Unlike true oyster mushrooms, Elm Oysters have a well-defined stem (stipe) that is often curved and robust— growing perpendicular out of tree trunks or wounds. Caps are white to cream, flattening with age, and grow singly or in loose clusters of 1-4 mushrooms.

Nutty Flavor & Firm Texture

With a mild, nutty taste and a firm, meaty bite, Elm Oysters hold up well in cooking. They’re perfect for sautéing, stir-frying, roasting, or even drying into powders for sauces—offering a satisfying and versatile ingredient in plantbased and gourmet dishes.

Nutritious & Functional
These mushrooms boast high levels of protein, fiber, B vitamins, and essential minerals like potassium and phosphorus. They’re also rich in antioxidants and beta-glucans, offering anti-inflammatory and immune-supportive properties, with early studies suggesting potential medicinal benefits.

Our Cultivation Methods
Silver Lake Mushrooms grows Elm Oysters on hardwood substrates—such as straw, sawdust, or logs—under carefully controlled indoor conditions. They tolerate elevated CO₂ levels, making them hardy and reliable in varied environments. We maintain:

Harvested by hand in Canada for peak quality.