Steens indian paintbrush (Castilleja pilosa)

Also known as: Hairy Indian Paintbrush, Great Basin Indian Paintbrush

Steens Indian paintbrush (Castilleja pilosa var. steenensis) is notable for its striking, hairy stems and foliage that often exhibit shades of vivid pink to red. The plant's distinctive, brush-like inflorescences, which resemble paintbrushes dipped in bright colors, are a key adaptation for attracting pollinators in its high-altitude meadow habitats. Despite its delicate look, this hardy plant thrives in rocky, well-drained soils, making it well-suited to its native environment.

In This Article

Care Tips Water Sunlight Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Steens indian paintbrush

Lifespan

Perennial

Plant Type

Herb

Plant Height

15-60 cm

Spread

Bracts can spread up to 4 cm wide

Leaf Color

Green, often with a hairy texture

Flower Size

About 2-3 cm

Flower Color

Red, orange, yellow

Images of Steens indian paintbrush

Quickly Identify Steens indian paintbrush

Castilleja pilosa can be identified by its hairy stems and leaves, brightly colored bracts that surround the flowers, and the tubular shape of the actual flowers which are typically hidden among the bracts.

Scientific Classification of Steens indian paintbrush

Phylum

Vascular plants

Class

Dicotyledons

Order

Lamiales

Family

Broomrape

Genus

Indian paintbrush

Species

Steens indian paintbrush

Planting and Growing of Steens indian paintbrush

Care Difficulty

Moderate

Watering Schedule

Every 2 days

Sunlight Requirements

Full sun

Sunshine Duration

6-10 hours

Ideal Temperature

64-77℉

Soil Type

Potting Mix, Peat Mix

Soil pH

6.5-7.5

Fertilizer Type

Balanced

Pruning Season

Spring, Summer

Pruning Area

Branches, Leaves

Pruning Frequency

2 times a year

Repotting Season

Spring

Pot Type

Plastic, Terracotta

How to Water Steens indian paintbrush?

For Castilleja pilosa, it's important to water until the soil is evenly moist but not soaking. Given its native dryland habitat, a good rule of thumb is to water around 300 ml to ensure the roots are well hydrated but not submerged. Always let the soil dry out between waterings to mimic its natural environment.

What are the symptoms of an underwatered Steens indian paintbrush? ›

What should I do if my Steens indian paintbrush is not getting enough water? ›

What are the symptoms of an overwatered Steens indian paintbrush? ›

How to save an overwatered Steens indian paintbrush? ›

What Are the Sunlight Requirements for Steens indian paintbrush?

Sunlight Requirements: Full sun, Partial sun

Duration of light: 4 to 6 hours

Castilleja pilosa prefers full sun exposure but can adapt to partial sun. Consistent sunlight encourages lush growth and vibrant blooms, enhancing its ornamental value and ecological role within its habitat.

What is the preferred lighting intensity? ›

How do you achieve the ideal lighting conditions? ›

What benefits does ideal lighting provide? ›

What Is the Ideal Temperature Range for Steens indian paintbrush?

Ideal Temperature: 64 ~ 77℉

The ideal temperature range for growing Castilleja pilosa is between 64°F and 77°F. Within this temperature range, the plant can optimally perform its photosynthesis process, leading to healthy growth and vibrant blooms.

What Soil is Best for Steens indian paintbrush?

Soil type: Sandy soil, Loam, Sandy loam

Soil PH: 6.5 ~ 7.5

Castilleja pilosa thrives in well-drained soils as it prevents waterlogging, which can drown the roots. Adequately drained soil ensures the roots have enough oxygen, promoting healthy plant growth and vibrant blooming. This plant prefers nutrient-poor soil, which limits the competition from surrounding vegetation. Such conditions mimic its natural habitat, allowing it to develop robust root systems without excessive nutrient interference. A slightly alkaline to neutral pH range from 6.5 to 7.5 suits Castilleja pilosa. This pH balance facilitates the proper uptake of vital nutrients, ensuring the plant remains healthy and stress-free.

How to Fertilize Steens indian paintbrush?

Fertilizer type: Balanced

Castilleja pilosa generally requires light to moderate fertilization. Use a balanced fertilizer at a rate of 10-10-10, applying approximately 0.5 to 1 pound per 100 square feet. Adjust based on the plant's response and avoid over-fertilizing as it can be sensitive.

How to Prune Steens indian paintbrush?

Pruning Time: Spring, Summer

Using sharp, sterilized pruning shears, start by making clean cuts to remove any dead or damaged stems at the base. This prevents the spread of disease and promotes better growth. Ensure the cuts are made at a slight angle to enhance water runoff, preventing infections. Trim back about one-third of the longer stems to encourage a bushier growth pattern. Focus on cutting above a leaf node, which is where new growth will emerge. This practice helps maintain the plant's natural shape and keeps it looking full and lush. More About Pruning Techniques→

How to Propagate Steens indian paintbrush plant?

Propagate Time: Spring,Early spring,Late spring

Begin by collecting seeds from mature plants in late summer. Sow the seeds in a pot or seed tray filled with a sandy, well-draining mix. Lightly cover the seeds with soil and water gently.

Using sterilized pruning shears, take cuttings from a healthy plant, choosing non-flowering, green stems. Remove the lower leaves and dip the cut end in rooting hormone to encourage root development.

Insert the prepared cuttings into a pot filled with a moist potting mix. Firm the soil around the base for support and ensure leaves do not touch the soil to prevent rotting.

More About Propagating Techniques→

How to Repot Steens indian paintbrush plant?

Repotting frequency: Every 2-3 years

You'll know it's time to repot Castilleja pilosa when the roots begin to circle around the bottom of the pot or start emerging from the drainage holes. The plant may also show signs of stunted growth, and the soil may dry out much faster than usual. These signals indicate that the plant has outgrown its current environment and needs more space.

When selecting a new pot for your Castilleja pilosa, opt for one that is slightly larger than the current container. Make sure it has adequate drainage holes to prevent waterlogged soil, which can lead to root rot. A terracotta pot can be a great choice as it allows the soil to breathe, aiding in appropriate moisture regulation and preventing overwatering.

Selecting the right soil mix for repotting Castilleja pilosa is crucial. Choose a well-draining sandy mix, which helps mimic its natural habitat and prevents root rot by allowing excess water to escape easily. The sandy component ensures proper aeration, thereby promoting healthy root growth and overall plant vitality.