Oregano, Marjoram. An erect perennial with dark green leaves purple flushed when young and dense clusters of small funnel-shaped purplish pink flowers with purple-red bracts from late spring to autumn. Height 45cm. Spread 45cm. Flowers May to September. Full sun. Hardy.
Origanum laevigatum ‘Herrenhausen’, also known as ornamental oregano, is a stunning perennial prized for its aromatic foliage and dense clusters of purplish-pink flowers. With dark green leaves flushed with purple when young and long-lasting flower spikes from late spring to autumn, Origanum laevigatum ‘Herrenhausen’ adds fragrance, colour, and charm to borders, containers, and herb gardens.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: Plant Origanum laevigatum ‘Herrenhausen’ in spring when the soil is warming. This allows roots to establish well and encourages vigorous summer growth.
Autumn: Early autumn planting is also effective, giving your Origanum time to settle before the next growing season.
Site Selection
Sunlight: Origanum laevigatum ‘Herrenhausen’ thrives in full sun, which promotes strong flowering and healthy foliage.
Soil: Ensure well-drained soil for Origanum laevigatum ‘Herrenhausen’. Incorporate grit or compost into heavier soils to improve drainage and prevent root rot.
Planting Instructions
Prepare the Hole: Dig a hole twice the width and the same depth as the root ball for Origanum laevigatum ‘Herrenhausen’.
Soil Preparation: Mix compost or organic matter into the soil to enhance fertility and drainage.
Planting: Position the plant so the crown is level with the soil surface. Backfill gently and firm down.
Watering: Water thoroughly after planting to settle the soil around the roots, taking care to avoid waterlogged conditions.
Watering Requirements
Growing Season: Origanum is moderately drought-tolerant once established. Water during prolonged dry periods, allowing the soil to dry slightly between watering sessions.
Dormant Season: Reduce watering significantly during dormancy; only water if the soil becomes excessively dry.
Feeding
Spring: Apply a balanced fertiliser in early spring to support strong new growth and encourage flower spike development.
Mid-Summer: A light feed in mid-summer can extend flowering and maintain plant vigour.
Pruning
Deadheading: Remove spent flowers regularly to maintain a tidy appearance and encourage further blooms.
Autumn Pruning: After flowering ends, cut Origanum laevigatum ‘Herrenhausen’ back by one-third to tidy growth and prepare for dormancy.
Mulching
Spring: Apply a layer of organic mulch around the base of your Origanum to conserve soil moisture, suppress weeds, and regulate temperature.
Winter: A light mulch layer helps protect roots and maintain soil stability through cooler months.
Supporting the Plant
Origanum laevigatum ‘Herrenhausen’ has naturally erect stems and a compact habit, so staking is rarely necessary. In windy locations, light support may help prevent flopping.
Final Tips
Origanum laevigatum ‘Herrenhausen’ is a low-maintenance, fragrant, and pollinator-friendly perennial that adds beauty from late spring to autumn. By planting it in full sun with well-drained soil and following this care routine, this Origanum will provide lasting colour and aromatic foliage year after year.
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