mock orange flowers

Philadelphus lewisii “Lewis’ Mock Orange” Hydrangeaceae

Missoula, MT
June 11, 2015
Robert Niese

This species of Philadelphus was discovered by Meriwether Lewis in 1806. It’s flowers and scent are reminiscent of orange blossoms, thus it’s common name, the mock-orange. Unlike oranges, these attractive shrubs produce dry, 4-parted capsule fruits that are wholly inedible. Their leaves, however, contain saponins and can be crushed to make a mild soap. They are a popular ornamental plant here in the eastern PNW and are the state flower of Idaho. Look for them scattered throughout drier slopes in the west, where they tend to grow singly or in small populations. Here in Missoula, they cover the hillsides with gorgeous white blooms at the beginning of summer, much like Amelanchier in the spring.


May Day flower report from yesterday!

  • Finally got the old compost decomissioned! I put a bunch of bark dust there but I’ll put some plants in later. Also, hummingbird garden is coming along nicely.
  • columbine
  • the first foxglove
  • delphenium about to pop!
  • My giant sage that is swarming with happy bees
  • lots and lots of irises down the south fence line
  • my jasmine bush has grown a lot since the rosemary isn’t hogging all the light.
  • me in the kitchen cooking up stuffed zuchinni (stuffed with camelized onions, vegan chicken, chickpeas, and spices)
  • mock orange