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Thistle Asteraceae

Growing Thistle: Tips at a Glance

  • Type Flowering plant
  • Life Span Perennial or biennial
  • USDA Zones 5 to 9
  • Light Sun
  • Water Well-drained soil
  • Location Deerproof
  • Design Tip Silvery green foliage
  • Companions Bayberry, Rosa rugosa
  • Best Season Summer flowers

Thistle: A Field Guide

Many plants are called thistles and have in common prickliness. Stems, flowers, or leaves have bristly spikes, a protective characteristic rendering them unpleasant to handle (or eat, if you graze).

Thistles belong to the Asteraceae family, making them distant cousins of sunflowers, asters, and daisies. Different types include edible cardoons (Cynara); ornamental globe thistles (Echinops); weeds (Cirsium and Carduus); and the controversial Scottish thistle (Onopordum acanthium), which is Scotland’s national flower but invasive in the US.

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Planting, Care & Design of Thistles

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