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Plants Letter O

The plants letter O page has 8 unique specimens. A couple of fine smelling plants, Tea Olive and Oregano are two of them. Herbee just loves to share his knowledge with you.


The Olea genus has around twenty species. Olea is an evergreen tree and also known as the Common Olive. This family is native to the Mediterranean region as well as Africa, Arabia and Himalayan Asia. The trees will grow well in zones eight through eleven. This group of trees are long lived, and known for their tiny clusters of white flowers, which turn into fruit called drupes.

These trees like a mild climate but the cooler winter months will encourage more flowering the following season. Olea love the long warm season of summer in their native environment. The fruit has a bitter taste and must go through a process in order to bring about what we know today as olive oil. It's a very productive tree for providing a common product.


A fairly large group of evergreen shrubs and small trees, Olearia - Daisy Bush has about one hundred and thirty species. They're native to New Zealand. The Daisy Bush will do well in zones eight through eleven in the United States.

These evergreens need ordinary well drained soil and a good sunny location. They can survive in salt conditions and also tolerate the wind.

In the fall, clusters of white fragrant flowers appear and look like a daisy. The Olearia is a great species for hedges or along stone walls. They do benefit from a good pruning after flowering.


The Origanum - Oregano family is native to the Mediterranean area and temperate Asia. Oregano will grow in many climates and does best in zones seven through eleven. The Origanum is known for its culinary use and also grown for its fragrant leaves and showy purple flowers.


We have grown different varieties of Oregano for years, both in a greenhouse and straight into the ground. I will buy seeds in bulk, and keep them in a dark and cool place for storage. Herbee loves to give seeds away to friends and family. A great savings for everyone.

This specie spreads and will fill in a landscape area with its beauty. Oregano loves full sun and well drained soil. The specie should be pruned regularly to enhance its growth. It's a great specimen for a container garden.


One of my favorite families, the Osmanthus - Tea Olive consists of around thirty species. The Tea Olive is native to the Himalayas, China, and Japan. In the United States it does well in zones seven through eleven. In my zone seven, it is one of the most fragrant small trees and is sometimes compared in its rich aroma to the Gardenia.

Tiny White Flowers On Tea Olive

The Tea Olive should be planted in a sheltered area and can take sun and partial shade. As a designer, one of the most popular places is along a foundation or near a window or entrance way.

We have seen this specie flower throughout an entire year. The clusters of white tiny flowers and its fragrance are truly spectacular. Follow the link at the bottom of the page for more information on the Tea Olive.


There are about seventy members that make up the Osteospermum genus. Most of this family is native to South Africa. One variety known as the Sailor Boy Daisy is native to eastern Cape Province.

In spring and throughout fall, the sparkling ordinary type white daisy will dance with the warm winds. The Osteospermum can be frost hardy and loves an open and sunny location. Well drained soil suits this family.

When fully matured, they can reach up to five feet and will spread also. They're great specimens in rock gardens. This family will grow well in zones eight through ten in the United States.


About ten species make up the Ostrya genus. The Ostrya can grow in a variety of climates in the northern hemisphere, and thrives in zones two through nine in the United States.

They also are popular in Turkey and southern Europe. These are deciduous trees and can grow up to sixty feet tall. Ostrya benefit from a sheltered area, and can take full sun or partial shade. They love well drained soil.

In springtime, the male catkins (long flowers with petals) appear. In summer they are replaced by shorter catkins. They are generally slow growers but an attractive tree to plant around evergreens.

Herbee's Resource Book Pick

Herbee Greenthumb


Mike does a fantastic job in this book for you. Now is a great time to buy, read, and learn some great tips for your future gardens and landscape. This resource book is also a wonderful gift idea for that special gardener or landscaper. I highly recommend this book for you. It's not your ordinary garden book, very unique.


Oxydendrum - Sourwood or Sorrel Tree is a one specie family. It will grow in an ordinary setting in the eastern part of the United States. The Sourwood thrives in zones three through nine in the states.

This specie is grown for its summertime fragrant flowers, but more for its splendid color in the fall season.

The Sourwood should be planted in an open area with partial shade and in moist soil. It can range in height anywhere from twenty to forty feet tall. It's a wonderful deciduous tree.


There are about fifty species that make up the Ozothamnus family. Native to Australia and New Zealand, this specie will do well in zones eight and nine in the United States.

The Ozothamnus is an evergreen shrub that has aromatic foliage. The mass of red toned buds in early summer unfolds into clusters of white flowers.

These species likes well drained soil and also needs protection against the colder months. This is a great shrub for rock gardens and along slopes and banks.

Other Articles You Might Be Interested In.

Osmanthus - Tea Olive --- Evergreen Plants

Drying Herbs --- More List Of Plants (Besides Plants Letter O)

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