Photo: no rights reservedCC0 1.0via iNaturalist
Glaucous webcap Plant Care
Cortinarius glaucopus
Updated · Sources · How we source care data
This unique mushroom species is easily recognizable by its vibrant blue color, making it a standout in any forest setting. Originating from North America, Cortinarius glaucopus is highly sought after by plant collectors due to its striking appearance and rarity in the wild. Its bright blue hue adds a pop of color to any collection and is a must-have for enthusiasts looking for a standout addition.
Every 7–14 days
Bright indirect
50°F
70–80%
At a glance
How do you care for Glaucous webcap?
Water Glaucous webcap every 7–14 days, letting the top layer of soil dry out between waterings, and give it bright indirect light. It prefers temperatures of 50°F (10°C) and above and 70–80% humidity. Fertilize it every 2 months during the growing season.
Where Is the Glaucous webcap Native To?
- Albania
- Austria
- Belarus
- Belgium
- Bosnia and Herzegovina
- Bulgaria
- Canada
- Croatia
- Cyprus
- Czechia
- Denmark
- Estonia
- Finland
- France
- Germany
- Greece
- Hungary
- Iceland
- Ireland
- Italy
- Latvia
- Lithuania
- Luxembourg
- Malta
- Mexico
- Moldova
- Montenegro
- North Macedonia
- Norway
- Poland
- Portugal
- Romania
- Russia
- Serbia
- Slovakia
- Slovenia
- Spain
- Sweden
- Switzerland
- The Netherlands
- Ukraine
- United Kingdom
- United States
What Is the Glaucous webcap?
Glaucous webcap (Cortinarius glaucopus) belongs to the Cortinariaceae family within the Cortinarius genus. Glaucous webcap is native to Europe, North America.
Glaucous webcap displays a mycorrhizal, fruiting growth habit, reaching up to 6 ft tall with a spread of approximately 4 ft. Glaucous webcap produces none.
How Often Should You Water a Glaucous webcap?
Cortinarius glaucopus requires watering every 7–14 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–14 days
Let soil partially dry between waterings
What Light Does the Glaucous webcap Need?
Glaucous webcap thrives in bright indirect light. Avoid placing Glaucous webcap in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect
What Temperature and Humidity Does the Glaucous webcap Prefer?
Cortinarius glaucopus grows best at temperatures of 50°F. Glaucous webcap prefers humidity levels of 70–80%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
50°F
Humidity
70–80%
What Soil Mix Works Best for a Glaucous webcap?
Well-draining, acidic soil mix. Good drainage is essential for Glaucous webcap to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Glaucous webcap?
Feed Glaucous webcap every 2 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 2 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Glaucous webcap?
Repot every 2-3 years in spring or fall. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Glaucous webcap?
Glaucous webcap can be propagated through spores.
Is the Glaucous webcap Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Glaucous webcap, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
Never eat a wild mushroom based on an app identification. Many mushrooms have poisonous lookalikes, and edibility must never be judged from an app.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Glaucous webcap?
Glaucous webcap is susceptible to aphids, slugs, snails. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
Keep exploring plants
Glaucous webcap is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Cortinarius genus (family Cortinariaceae) — search all Cortinarius species in the plant lookup.
Glaucous webcap thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Cortinarius glaucopus, family Cortinariaceae — World Flora Online.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Glaucous webcap, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Photo: Public domain, CC0 1.0, iNaturalist — original.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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