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Castilleja sulphurea, commonly known as Sulphur or Sulfur Indian Paintbrush, is a perennial wildflower native to the western United States, particularly in subalpine meadows and exposed flats. It is characterized by pale yellow bracts that are often mistaken for petals, forming tightly clustered, brush-like blooms resembling traditional paintbrush flowers.

 

This plant thrives in full sun and prefers moist, well-drained soils with a medium texture. It typically grows 1-2 feet tall and blooms throughout the summer at moderate to high altitudes. It is commonly found in regions like Colorado and other mountainous areas in the Intermountain West. It is often used in restoration projects and native landscaping due to its resilience and striking appearance.

 

It is specifically native to the following states, as well as Canada:
Arizona
Colorado
Idaho
Montana
New Mexico
South Dakota
Utah
Washington
Wyoming

 

Like other Castilleja species, it is a hemi-parasite, meaning it derives some of its nutrients by attaching its roots to other plants. This parasitic relationship helps it thrive in nutrient-poor soils. It is best to plant them with host plants. 

 

Unlike some other species, Indian Paintbrush does not harm the host plants. 

 

This nature does not seem to harm their hosts as they do not overtake the other plants, they just use water or nutrients from other plants, if needed.  They can even form these relationships with other paintbrush species where they will share nutrients, as needed. Rosy Indian Paintbrush would be a good candidate for this as their habitats cross over in many states.

 

For best results and to mimic their natural environment, please see below for some examples of good host plants:

Lupine
Penstemon
Rosy Indian Paintbrush 

 

The seeds require 30-60 days of cold to break dormancy. This can be achieved in two ways. Either by planting the seeds in fall/winter for a spring emergence or folding the seeds into a moist paper towel, sealing them into a Ziplock bag and placing them in a refrigerator for 30-45 days, then sow as normal. 

 

Grows 12-24 inches tall

 

Perennial zones 4-7

 

This is for 250 seeds.

250 Sulfur Indian Paintbrush Seeds, Yellow Indian Paintbrush, Castilleja Sulphur

SKU: CJ0325C
$3.99Price
Quantity

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