Genus: Marjoram

Origanum

Photo/Illustration: 
Jennifer Benner
Marjoram (Origanum)
oh-RIG-an-um
Lamiaceae
The genus Origanum contains summer-flowering, aromatic perennials and subshrubs from the mountains of the Mediterranean and southwestern Asia. The 2-lipped flowers have showy bracts partially enclosing them, and they last for many weeks in summer. Several species are used as culinary herbs, while other species belong in a rock garden, border, or alpine house. Origanum attracts bees, butterflies, and other insects.
Noteworthy characteristics:  Aromatic leaves, some with culinary uses. Long-lasting flowers in summer. Attracts bees and butterflies.
Care:  Site in full sun and poor to moderately fertile soil. Origanum needs well-drained soil, and some species resent winter moisture. If grown for foliage, trim plants back before flowering.
Propagation: 

Start seed indoors at 50-55°F in spring or in a cold frame in autumn. Also can be propagated by division in spring or by basal cuttings in late spring.

Problems: 

Fairly trouble-free, but root rot, stem rot, aphids, and spider mites can sometimes be problems.

Species, varieties and clutivars for genus Origanum

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Marjoram
Origanum laevigatum and cvs.
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Golden oregano
Origanum vulgare 'Aureum’