• Saguaro Blooms Upclose

    Saguaro

    National Park Arizona

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  • Rincon Mountain District Backcountry Closures Due to Deer Head Fire

    For the safety of hikers and campers, some trail and campground closures have been enacted. All off-trail areas within Saguaro National Park east of Douglas Spring Trail and Manning Camp Trails are also closed. More »

Cacti / Desert Succulents

Saguaro National Park is home to 25 species of cactus ranging from the towering saguaro cactus (Carnegiea gigantea) to the tiniest type of cactus in the park, the mammillaria (Mammillaria spp). The most common cacti species at Saguaro National Park and within Tucson, Arizona include:

Saguaro cactus (Carnegiea gigantea)

Fishhook barrel cactus (Ferocactus wislizenii)

Staghorn cholla cactus (Opuntia versicolor)

Pinkflower hedgehog cactus (Echinocereus fendleri var. fasciculatus)

Engelman's prickly pear cactus (Opuntia engelmannii)

Teddybear cholla cactus (Opuntia bigelovii)

Chainfruit (jumping) cholla cactus (Opuntia fulgida)

 

Did You Know?

Gila Monster

Gila monsters are one of two venomous lizards in the world. The other is the similar Mexican beaded lizard. Gila monster venom evolved as a defensive rather than offensive weapon.