Dwarf hare's-ear: complete guide

Overview

Bupleurum semicompositum, commonly known as dwarf hare's-ear or buplèvre glauque, is a Mediterranean plant from the Apiaceae or carrot family. This compact, frost-hardy small plant belongs to a group that naturally occurs from the Canary Islands to Turkmenistan. The plant is known for its blue-green foliage and small yellow flowers that bloom from May through June.

This is an ideal plant for dry climates and frost-hardy gardens. It requires minimal care and blooms beautifully in well-draining soils. Whether you're designing a rock garden, Mediterranean border, or xeriscaping landscape, Bupleurum semicompositum is an excellent choice.

Appearance and bloom

Bupleurum semicompositum grows as a compact, low-growing plant, typically not exceeding 30-50 centimeters in height. The plant features characteristic blue-green foliage that forms semi-closed structures. This blue-green color is distinctive and helps the plant thrive in dry, sunny conditions.

The blooming period runs from May through June, when the plant produces small yellow flowers arranged in umbels. These flowers attract bees and other pollinators. After blooming, the plant sets seeds that can spread throughout the garden.

Ideal location

Bupleurum semicompositum thrives best in fully sunny locations receiving at least six hours of direct sunlight daily. The plant can also grow in partial shade, though less robustly. Provide excellent air circulation; this is essential for a healthy plant.

The plant is perfect for rock garden arrangements, Mediterranean borders, and xeriscape landscapes. It can also work well in gravel gardens and other dry-climate gardens. Avoid very windy locations, though the plant is fairly wind-resistant.

Soil

Bupleurum semicompositum is not demanding and grows well in normal to lean soils. The plant, however, absolutely prefers well-draining soil and cannot tolerate heavy clay without amendments. A good mixture of sand, gravel, and compost creates ideal growing conditions.

The plant prefers soils with a pH between 6.5 and 7.5, though it's quite flexible. Add organic matter to balance drainage and water-holding capacity.

Watering

Once established, Bupleurum semicompositum is highly drought-tolerant. During the first growing season, water the small plant regularly, especially during dry spells. Once the plant is established, you can significantly reduce watering.

During summer, you only need to water if it's very dry and the plant shows signs of shriveling. Avoid waterlogging; the plant prefers dry feet to wet roots. In winter, supplemental water is virtually unnecessary.

Pruning

Bupleurum semicompositum requires minimal maintenance regarding pruning. You can remove spent flowers to encourage more blooms. In late spring, you can remove any dead leaves and branches if necessary.

The plant maintains a natural, compact form without much intervention. In warm climates, you can lightly prune after blooming to maintain shape.

Maintenance calendar

Spring (March-April): Inspect for winter damage. Begin regular watering.

Summer (May-August): Water regularly during dry periods. Remove spent flowers.

Autumn (September-October): Gradually reduce watering. Harvest seed if desired.

Winter (November-February): Minimal maintenance required. Protect young plants against extreme frost.

Winter hardiness

Bupleurum semicompositum is reasonably winter-hardy and can tolerate temperatures down to about -10 to -15 degrees Celsius. In most parts of the Netherlands and Belgium, the plant will survive winter, though young plants may need protection.

In very cold winters, you can protect the plant with mulch or leaves. Ensure the plant doesn't receive excessive water in very wet, frozen soils, as this can lead to root failure.

Companion plants

If you enjoy Bupleurum semicompositum, you might also appreciate:

• Bupleurum fruticosum (woody hare's-ear)
• Santolina chamaecyparissus (cotton lavender)
• Helichrysum italicum (curry plant)

These plants have similar growing and care requirements and add texture and color to dry gardens.

Closing

Bupleurum semicompositum is a beautiful, low-maintenance plant perfect for dry gardens and xeriscapes. With minimal care, the small plant provides years of beauty and flowers. Whether creating a rock garden or further reducing your garden's water needs, Bupleurum semicompositum certainly deserves a place in your design.

Perfectly suited for gardenworld.app garden plans!

For more information and plant availability, see major garden centers.