Round-leaved oregano
Origanum rotundifolium · Lamiaceae
📷 Krzysztof Ziarnek, Kenraiz · CC BY-SA 4.0
The gardener's calendar
Ideal time to plant round-leaved oregano: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Scientific name
- Origanum rotundifolium
- Family
- Lamiaceae
- Type
- Ornamental perennial herb
- Mature height
- 40 cm
- Foliage
- Evergreen, soft green, rounded leaves
- Flowering
- June to August, pale pink flowers in spikes
- Hardiness
- Hardy, tolerates down to -15 °C
- Origin
- Mediterranean and Middle Eastern regions
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
Plant on a well-drained mound or in a rock garden: it needs full sun and dry conditions. Very little fertilizer, very little supplementary water once established.
The common mistake
Enriching the soil when planting it: it becomes soft, flops over, and rots.
The pro's trick
Cut short (10-15 cm) right after flowering in August to force branching: you'll get more flowers next year without any extra effort.
Seasonal watch
Damp autumn: watch for basal rot if water pools at the collar.
Care
Light exposure
Place ornamental oregano in full sun, with a minimum of 6 hours daily, for vigorous growth and abundant flowering. It tolerates partial shade, but produces fewer flowers. Avoid overly shaded or damp areas.
Watering
Water moderately during the growing season, then reduce watering in summer once established. Let the soil dry slightly between waterings, as this plant dislikes excess moisture. In winter, space waterings further apart.
Soil and drainage
Grow oregano in well-draining, light and rather poor soil. A mix with sand or gravel improves drainage. Avoid heavy, clayey soils that promote root rot.
Pruning and maintenance
Prune regularly after flowering to maintain a compact, bushy shape. Remove dead or damaged stems in late winter. Light pinching in spring encourages branching.
Fertilizing
A moderate application of fertilizer in spring is more than enough. Choose a balanced or nitrogen-poor fertilizer to avoid dense foliage at the expense of flowering. Plants in poor soil often thrive without any additional feeding.
Pests and diseases
Ornamental oregano is generally robust against diseases. Watch for powdery mildew in case of excessive moisture. Good drainage and adequate air circulation prevent most problems. Few attacks from harmful insects.
Did you know?
Ornamental oregano Origanum rotundifolium, with its characteristic rounded leaves, is a close relative of true culinary oregano. Its delicate persistent pink bracts make it a prized plant in dried flower arrangements, as they retain their color long after harvest.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
Add this plant to my garden →Plants from the same family
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- RosemarySalvia rosmarinus
- BugleAjuga reptans
Tips generated and checked by Viridia — adapt them to your local climate.