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Silphium laciniatum

Also called Pilot Plant, Polar Plant


Photo Courtesy of Fernridge Landscaping

More About Silphium laciniatum

  • Clusters of nodding, eastern-facing, sunflower-like, yellow flowers
  • Sturdy, green stems are covered in white hairs
  • Basal, lanceolate leaves are very deeply lobed and 50 cm long
  • Upright, clumping habit
  • Drought tolerant
  • Bloom Time: August to September
  • Flower Size: 13 cm

Interesting Notes:

Native to Ontario

This long-lived cultivar is known to live for about a 100 years. Received the common name "compass" plant, as the plant orients itself on a north-south axis to minimize overhead sun exposure.

Zone:

4

Height:

200-300 cm

Spread:

50-60 cm

Colour:

Yellow
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Compass Plant Growing and Maintenance Tips

 Tolerant of poor soils, it is easily grown in an average, medium, well-drained soil, in full sun. 


Silphium laciniatum Characteristics

Full Sun
Full Sun
Native to Ontario
Native to Ontario
Drought Tolerant
Drought Tolerant

Soil Moisture

Average to Dry Soils
Well-drained
Moist to Average

Growth Rate

Medium

Flowering Time

Lt. Sum-Fall

Habit

Upright
Clumping

Foliage Color

Green

Landscape uses

Naturalizing
Roadside planting


Plants that work well with Compass Plant

Big Blue Stem Big Blue Stem
(Andropogon gerardii)