Eastern prickly pear cactus


 

Our cactus are in bloom just now, odd to have cactus in Ontario.

Rondeau Provincial Park, Ontario, Canada, July 7, 2025.

Opuntia humifusa.

The Eastern Prickly Pear Cactus (Opuntia humifusa) is one of only two cacti native to Ontario, and it is considered an endangered species in the province. It is found in Point Pelee National Park, and Rondeau Provincial Park.

  These areas, known as the Lake Erie Sand Spit Savannas, provide the dry, sandy habitats that the cactus needs to thrive.

Comments

Derek Stephen Hollingshead said…
I’ve created this iNaturalist guide for those interested in differentiating the two species of cactus occurring at Rondeau Provincial Park, Opuntia humifusa and Opuntia cespitosa. It functions as a practical dichotomous key, highlighting the morphological characteristics that can be used to distinguish between the two species.

https://www.inaturalist.ca/observations/205734701
10:36 pm
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