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Thunder Bay Food Strategy
Safe Cycling Thunder Bay

Monarchs & Milkweed

Monarch butterflies and known for their incredible mass migration - nearly 5000km from Mexico and California to Thunder Bay and other parts of Canada - each year.

Monarchs can recognize a breeding area - milkweed - from their flight over the gardens. Once spotted, the females will descend and deposit their eggs on the underside of the leaves.

Not only are milkweed flowers a good source of nectar for the adult butterfly, the leaves are also a necessary food source for the caterpillars when they emerge from their eggs.

Without milkweed, there would be no monarchs.

Looking for milkweed? EcoSuperior will be selling milkweed during our annual spring plant sale on Saturday, May 25 from 9am-1pm. Come early to ensure we haven't sold out!

Looking for more information about milkweed? Check out these resources.

Monarchs & Milkweed Fact Sheet

USDA - Swamp Milkweed Fact Sheet

Monarch Watch


562 Red River Road,
Thunder Bay, Ontario
P7B 1H3
Due to COVID-19 social restrictions, our office is currently closed to the public.
We are offering curbside pick-up through our online store.

Temporary phone hours:
10 a.m. to 2 p.m. Monday to Friday. 

Phone: 807-624-2140

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