What is the best site for optimal sun exposure?

Locate Incarvillea olgae in a garden spot where it gets morning sunlight and some afternoon shade. This helps prevent overheating while ensuring sufficient light for growth. Placing it near walls or trees for partial shade can be pivotal.

How should I adjust light levels through changing seasons?

In spring and fall, maximize exposure by moving potted plants to south-facing areas. During summer, ensure protection from intense afternoon sun by adding light cloth or shade fabric, allowing diffused sunlight.

What indoor lighting conditions replicate its ideal sunlight needs?

Position pots near windows with southern or eastern exposure. You may use artificial grow lights to supplement especially during shorter days, ensuring they are on for no more than 6 hours to mimic natural daylight patterns.

Princess trumpet-flower (Incarvillea olgae)

Also known as: Olga's roving sailor

*Incarvillea*, commonly known as princess trumpet-flower, is a genus comprising around 16 species of flowering plants in the Bignoniaceae family. These species are native to central and eastern Asia, with many thriving at high altitudes in the Himalaya and Tibet.

In This Article

Care Tips Water Temperature Soil Fertilize Prune Propagation Repotting

Attributes of Princess trumpet-flower

Lifespan

Perennial

Plant Height

30-60 cm

Spread

30-50 cm

Leaf Color

Green

Flower Size

5-7 cm

Flower Color

Pink, Magenta with Yellow throat

Images of Princess trumpet-flower

Quickly Identify Princess trumpet-flower

Incarvillea olgae can be recognized by its distinctive pink or magenta trumpet-shaped flowers, which typically have a yellow throat. The leaves are pinnate and fern-like, providing a delicate texture to the plant. It grows in clusters and is often found in rocky or well-drained areas.

Scientific Classification of Princess trumpet-flower

Phylum

Vascular plants

Class

Dicotyledons

Order

Lamiales

Family

Bignonia

Genus

Incarvillea

Species

Princess trumpet-flower

Planting and Growing of Princess trumpet-flower

Care Difficulty

Moderate

Watering Schedule

Every 2 days

Sunlight Requirements

Partial sun

Sunshine Duration

4-6 hours

Ideal Temperature

60-75℉

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

Ceramic, Plastic

How to Water Princess trumpet-flower?

Incarvillea olgae requires a moderate amount of water. When watering, ensure the soil is thoroughly moist but not waterlogged. Aim for about 300 ml per watering, making sure the top inch of soil is dry before watering again.

What are the symptoms of an underwatered Princess trumpet-flower? ›

What should I do if my Princess trumpet-flower is not getting enough water? ›

What are the symptoms of an overwatered Princess trumpet-flower? ›

How to save an overwatered Princess trumpet-flower? ›

What Is the Ideal Temperature Range for Princess trumpet-flower?

Ideal Temperature: 60 ~ 75℉

Incarvillea olgae thrives best in a temperate climate where the temperature is consistently between 60°F and 75°F. This temperature range supports optimal photosynthetic processes and growth rates. Maintaining this range helps in fostering a healthy growth environment, reducing stress, and encouraging blooming.

What Soil is Best for Princess trumpet-flower?

Soil type: Loam, Sandy loam, Clay soil

Soil PH: 6.5 ~ 7.5

Incarvillea olgae thrives best in soils that offer excellent drainage. Good drainage prevents waterlogging, which can lead to root rot and other fungal infections, ensuring the plant remains healthy. A moderately fertile loam or sandy loam provides the necessary nutrients while avoiding nutrient overload. This balance allows the plant to grow robustly, producing vibrant flowers. This plant prefers a soil pH ranging from 6.5 to 7.5. This pH range supports essential nutrient availability, enhancing the plant’s growth and blooming capabilities.

How to Fertilize Princess trumpet-flower?

Fertilizer type: Balanced

Incarvillea olgae thrives when provided with balanced nutrition. Typically, using a liquid fertilizer, one should apply it in a diluted form, mixing about 1/2 teaspoon per gallon of water. For slow-release fertilizers, use approximately 1/4 cup per plant to ensure a gradual nutrient supply throughout the growing season.

How to Prune Princess trumpet-flower?

Pruning Time: Spring, Autumn, Winter

Start by removing faded flowers to encourage reblooming. Cut back any dead or wilted stems to maintain a tidy appearance. Trim overgrown branches lightly to shape and control the size of the plant. In late Autumn, before the first frost, prune to reduce height and remove any weak or damaged growth. This helps the plant endure winter without unnecessary stress and promotes a vigorous start in spring. More About Pruning Techniques→

How to Propagate Princess trumpet-flower plant?

Propagate Time: Spring,Early summer,Autumn

Harvest seeds from matured Incarvillea olgae plants when the seed capsules begin to turn brown and dry. Ensure the seeds are fully ripe to increase germination success.

Select healthy stems from the parent plant during its active growth phase. Cut a length of around 10 cm; remove lower leaves to reduce water loss while planting.

For division propagation, carefully dig up the plant clumps without damaging the root system. Gently separate the roots into smaller sections, ensuring each has stems and roots attached.

More About Propagating Techniques→

How to Repot Princess trumpet-flower plant?

Repotting frequency: Every 2-3 years

Repot Incarvillea olgae when you notice that its roots are growing out of the drainage holes of its current pot or when the plant's growth appears stunted. Another signal is if the soil seems to dry out unusually fast, indicating the roots have taken over much of the soil.

Select a pot that is 2-3 inches larger in diameter than the existing one. Choosing a pot with good drainage holes is crucial as it allows excess water to escape, preventing root rot. Opt for a breathable material like terracotta to enhance air circulation.

Prepare a well-draining potting mix rich in organic matter. This soil provides adequate aeration and retains enough moisture without becoming waterlogged. Such a mix mimics the plant’s native environment, promoting healthier growth and robust blooms.