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Wednesday , 4 August 2021
Black Knot. Image: City of Cold Lake.

City warning residents about black knot growth

The City of Cold Lake is raising awareness about an annual problem that comes around each spring–black knot.

Black knot is a fungus that causes brown and black knot-like swelling on the branches of the trees. If left untreated, black knot will eventually kill the tree and potentially spread to others.

The city suggests handling the fungus in these ways:

• Prune out infected branches now, while the plants are dormant and the knots are easier to see.
• Remove the infected branches to at least 15-20 cm (6-8 inches) below the knot.
• Sterilize cutting tools with bleach between each cut to prevent further spread of the disease.
• Bring infected branches to the burning bins at the Waste Transfer Station to be disposed of, free of charge.
• 𝘿𝙤 𝙣𝙤𝙩 𝙘𝙤𝙢𝙥𝙤𝙨𝙩 𝙩𝙝𝙚 𝙘𝙡𝙞𝙥𝙥𝙞𝙣𝙜𝙨 as they can continue producing spores for months after being removed.

For more information, email [email protected]

About Michael Menzies

Menzies is the editor-at-large for Connected Media Inc. Born and raised in Vermilion, he started in May 2018 during his NAIT Radio and Television practicum and reports on local politics, sports, and community issues. He became the Bonnyville Pontiacs play-by-play voice during the 2019-20 season. He also comments on provincial and national issues. Menzies hosts Connected! Evening Monday-Thursday at 5 o’clock. He also likes to buy books and read some of them.