Herrenhausen Oregano

Herrenhausen Oregano (Origanum laevigatum 'Herrenhausen')

Herrenhausen Oregano is an ornamental, woody-based subshrub grown for aromatic foliage that shifts from green to reddish purple and for airy summer bloom. A rhizomatous, upright to sprawling habit forms a low mound that roots at the nodes and provides season-long color in sunny, well drained sites.

Distinctive Features

Oval leaves deepen from green to reddish purple as summer progresses, with strongest purple tones in cooler climates. Stems are red, lightly aromatic, and topped by rosy-purple flowers with tinted bracts that attract pollinators.

Growing Conditions

• Sun Exposure: Full sun for best leaf color and flowering.
• Soil: Well drained, lean to moderately fertile soil; avoid heavy, waterlogged sites.
• Water: Low to moderate; allow the top inch to dry between waterings once established.
• USDA Hardiness Zones: 5 to 9; dies back to the crown in colder winters.
• Mature Size: About 1 to 1.5 ft tall and up to 2 ft wide, spreading slowly by rhizomes and rooting stems.

Ideal Uses

• Focal Point: Purple-tinged foliage and airy bloom add color contrast in sunny beds.
• Edging: Low, spreading habit defines paths and border fronts.
• Mixed Borders: Pairs with grasses and drought-tolerant perennials.
• Rock Gardens: Thrives in hot, well drained pockets with minimal water.
• Pollinator Gardens: Summer flowers support bees and beneficial insects.

Low Maintenance Care

• Watering: Water to establish, then deep, occasional soaks in dry spells.
• Pruning: Shear lightly after main bloom to tidy and encourage a late flush.
• Fertilizing: Feed sparingly; excess fertility reduces color and durability.
• Mulching: Use a thin mineral or gravel mulch to improve drainage around the crown.
• Notes: Cut back old stems in early spring; protect from winter wet and heavy clay.

Why Choose Herrenhausen Oregano?

• Season-Long Color: Foliage shifts to rich reddish purple with sun and cool nights.
• Pollinator Friendly: Summer bloom draws bees and beneficials.
• Drought Tolerant: Performs with modest water once established.
• Compact Form: Neat mound suits borders and small spaces.
• Low Input: Minimal feeding and easy seasonal grooming.

Plant in full sun with sharp drainage, avoid excess fertilizer, and shear after flowering to maintain a dense mound with vivid foliage and steady bloom.